Viscosity and Density Units and Formula Formulas for Viscosity A widely used formula for the calculation of viscosity of gases is the Sutherland Equation given by (1. η: Dynamic viscosity In general, gas viscosity is less than liquid viscosity. The dif- … Dynamic (or Absolute) Viscosity: The dynamic viscosity(η) of a fluid is a measure of the resistance it offers to relative shearing motion. The SI physical unit of dynamic viscosity ( μ ) is the Pascal-second (Pa s), identical to 1 kg m−1 s−1. Systematic Errors in Absolute Measurements Nearly all … Several engineering units are used to express viscosity, but the most common by far are centistoke (cSt) for kinematic viscosity and the centipoise (cP) for dynamic (absolute) viscosity. The measurements result in absolute viscosity values, which Now, Kinematic viscosity = dynamic or absolute viscosity/density and density = mass/volume = kg m-3. Can be calculate the Relative Viscosity by the relationships: Liquid 1: ethanol (density of ethanol = 0.789 g/cm3) The difference between VG10 and VG-30 bitumen is in their viscosity level. Description. The physical unit for dynamic viscosity in the centimetre gram second system of units (cgs) is … Calculate the viscosity of the liquid. The constant (K) of the instrument is determined using a liquid of known viscosity or by reference to tables supplied by the instrument manufacturer. This table presents the absolute viscosity of some common fluids and his evolution against the temperature. Therefore, proper characterization of viscosity must be carried out at a shear rate that is relevant to the specific process. In 1893 William Sutherland, an Australian physicist, published a relationship between the dynamic viscosity, , and the absolute temperature, , of an ideal gas. The density is given by, ρ = ν/μ. The units of dynamic viscosity are: Force / area x time The Pascal unit (Pa) is used to describe pressure or stress = force per area This unit can be combined with time (sec) to define dynamic viscosity. Viscosity depends strongly on temperature. Calculation Absolute viscosity of the sample is calculated and reported to the three significant figures. Absolute Viscosity Calculator | Calculate Absolute Viscosity (2.78e) b = 7.974 − 7.561 × 10 − 2 ⋅ t + 4.724 × 10 − 4 ⋅ t 2. According to the kinetic theory of gases, viscosity should be proportional to the square root of the absolute temperature, in practice, it increases more rapidly. Kinematic viscosity = Dynamic viscosity / Fluid mass density. Viscosity Formula This variation is provided in Crane (1988) as a graph for hydrocarbon vapors and natural gases, and as an equation for other common gases. A common unit of dynamic viscosity is poise which is equivalent to 0.1 Pa.s. Answer (1 of 6): Viscosity is the resistance offered by the fluid layers when there is a relative movement between them. Several engineering units are used to express viscosity, but the most common by far are centistoke (cSt) for kinematic viscosity and the centipoise (cP) for dynamic (absolute) viscosity. Temperature And the other way is to measure the resistive flow of a fluid under the weight of gravity. We have: ν: Kinematic viscosity. In most applications, the direct measurement of viscosity is im- practical, and a calculated value nus st be used. It refers to the fluid’s internal resistance to flow when force is applied. You can get a good grip on the concept after referring to the Viscosity Formulae Collection. Determination of Viscosity by Using Coefficient of Viscosity Unit and Dimension. Viscosity CGS unit of dynamic viscosity is Poise. 19 Calculation: Calculate the viscosity by the relationships: η1 η2 t1d1 t2d2 η1 is viscosity of liquid 1. η2 is viscosity of water 0.891 poise. The reciprocal of the viscosity is called the fluidity, a measure of the ease of flow. The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress.. For further definitions, go to Absolute (dynamic) and kinematic viscosity. The absolute viscosity can be calculated as μ = 1.113 (kg/m3) 16.97 10-6 (m2/s) = 1.88 10-5 (kg/ (m s), N s/m2) Viscosity of some Common Liquids Viscosity Converting Chart Kinematic viscosity can be converted from SSU to Centistokes with νCentistokes = 0.226 νSSU - 195 / νSSU (4) where νSSU < 100 νCentistokes = 0.220 νSSU - 135 / νSSU where The dimensional formula of viscosity is [ML-1 T-1]. Pump system calculations, metric units. Dynamic viscosity of gases is a measure of internal resistance. The equation is written. 1 centipoise = 0.01 gram/cm-sec or multiply centipoise by 1/density (g/cm3) to get centistokes. Viscosity denotes opposition to flow. Dynamic Viscosity - an overview | ScienceDirect Topics Pressure Gauge indicates the difference between the fluid pressure and the atmospheric pressure (P atm). The constant (K) of the instrument is determined using a liquid of known viscosity or by reference to tables supplied by the instrument manufacturer. Q.1: The absolute viscosity of a flowing fluid is given as 0.67 N s per square m. If the density is known to be 10 kg per cubic m, calculate its kinematic viscosity coefficient using Kinematic Viscosity Formula. For liquids, viscosity corresponds to the informal notion of "thickness". Therefore typically viscosity of JET A is higher and JET A also shows a steeper increase of viscosity with decreasing temperatures. Kinematic Viscosity 2. cSt is a metric unit used in a formula th at otherwise has English units. There are several methods in use. Viscosity is the measure of a fluid's resistance to flow. By using the normalized pure water viscosity data ( IAPWS-2008) the parameters a and b of Eq. In addition, the page shows conversion formulas and correlations between poises and all other units of measurement of dynamic viscosity. Absolute viscosity is a parameter for measuring the internal resistance in the fluid. absolute measurements of viscosity. For instance, honey has a much higher viscosity than water . Due to this a shear stress(\tau ) is developed in the fluid element. t Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. The viscosity of a fluid is a measure of its resistance to deformation at a given rate. Portal to dynamic viscosity or absolute viscosity conversion tables. The notation P = 0 indicates that the low-pressure limiting value is given . For example, the viscosity of water at 60 degrees Fahrenheit is approximately 1.02 centipoise where as the viscosity of a 50% propylene glycol solution at the same temperature is 8.13 centipoise. Different techniques and Tools to Measure Viscosity: First viscosity measurements were made in 1800s using the capillary tube methods. Relative viscosity is determined by timing the flow of a given quantity of the hydraulic fluid through a standard orifice at a given temperature. ent on the viscosity of a fluid or the thermal conductivity, which is proportional to the product of the viscosity and the heat capacity. Reference space & time, mechanics, thermal physics, waves & optics, electricity & magnetism, modern physics, mathematics, greek alphabet, astronomy, music Style sheet. The viscosity on this page is the dynamic (absolute) viscosity. μ = absolute viscosity. On solving we get, Dimensional formula for η = M L − 1 T − 1 and it is equivalent to Kg m ^ -1 s ^ -1. L T − 1. Oils can be separated into multigrade oils and monograde oils. Following equation is used for calculating absolute viscosity: K = selected calibration factor; in poise/second t = time of flow; in seconds absolute viscosity is obtained in Poise Stay tuned with BYJU’S for more such interesting articles. Jet A JF1107 was tested as a range scan from -20°C to -55°C with 1°C steps. Fluid Viscosity. There are two types of viscosity: the absolute or dynamic viscosity, and the kinematic viscosity. Another method for calculating the viscosity of air at a specified temperature and pressure will also be presented and discussed. The standard unit used to measure viscosity is the centistoke (cSt). According to the Automotive and Industrial Lubricants Glossary of Terms: Viscosity is ordinarily expressed in terms of the time required for a standard quantity of the fluid at a certain temperature to flow... Normally, viscosity would be measured at 25 ºc. We have: ν: Kinematic viscosity. to convert a value from gauge pressure (PG) to absolute pressure (Pas), simply add the atmospheric pressure: Pabs = PG + Patm It will be discussed and used in example calculations. The standard deviation (σ) and the values of fitting degree (R 2) for Δη of PEG 200 + 1,2-PDA binary system at T = (293.15 to 318.15) K with temperature difference about 5 K were listed in Table S6. d1 density of liquid 1. d2 density of water 0.997 g/cm3. (1967)[40] 4 68.1–70.2 0.83 30–30.3 10.3 Boyd(1930)[43] 68 303–343 7.13–19.4 2.46–6.87 5.72 The units of dynamic viscosity are: Force / area x time The Pascal unit (Pa) is used to describe pressure or stress = force per area This unit can be combined with time (sec) to define dynamic viscosity. ρ: fluid density The quantity defined above is sometimes called dynamic viscosity, absolute viscosity, or simple viscosity to distinguish it from the other quantity, but is usually just called viscosity. Fluids resist the relative motion of immersed objects through them as well as to the motion of layers with differing velocities within them. Solve for the unknown data #'s 1-9, … = 0.445 kg per cubic m Therefore, the density of fluid is 0.445 kg per cubic m. ν = η / ρ . Chemistry Q&A Library DETERMINATION OF ABSOLUTE VISCOSITY USING OSTWALD VISCOMETER: A group of students enrolled in a Physical Chemistry Laboratory class performed an experiment on the determination of absolute viscosity using Ostwald viscometer. Rotating viscometers can be divided in 2 groups, namely absolute and relative viscometers. Dynamic viscosity (absolute viscosity) kinematic viscosity; It describes the internal friction of a moving fluid. A water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. The Absolute Viscosity formula is defined as the force needed by a fluid to overcome its own internal molecular friction so that it can flow and is represented as υ = (μ*d*ρFluid)/Re or absolute_viscosity_of_fluid = (Viscosity of fluid*Diameter*Density of Fluid)/Reynolds Number. So, kinematic viscosity = kg m-1 s-1 / kg m-3 = m 2 s-1. This formula, often called Sutherland's law, is based on kinetic theory of ideal gases and an idealized intermolecular-force potential. For air and . The viscosity profiles of the lubricants investigated were determined using the Ubbelohde method DIN 51562 (Fig. Common examples include flowmeters, thermistors, and thermal conductivity detectors. Any two different fluids can have the same dynamic viscosity but will never have the same kinematic viscosity because of the density difference. It will be discussed and used in example calculations. where, is the shear strain rate and μ is the dynamic (or absolute) viscosity of the fluid. Kinematic viscosity can be obtained by dividing the absolute viscosity of a fluid with the fluid mass density. formula is: Where: N S = viscosity of solution N 0 = viscosity of solvent c = concentration in grams/mL Kinematic Viscosity Definition: The absolute viscosity of a fluid divided by the density of the fluid. Absolute or dynamic viscosity. Thus, a fluid with a large viscosity has a low fluidity. low-viscosity products, the specific gravity of KF-96 is nearly 1 at 25°C, so the value of the viscosity is almost the same whether expressed in centistokes or centipoise. This formula, often called Sutherland's law, is based on kinetic theory of ideal gases and … Here's a JavaScript program to calculate the coefficient of viscosity and the Reynolds number for different altitude, length, and speed. The viscosity of a liquid as a function of temperature can be approximated with the Andrade correlation. Water is a liquid at standard ambient temperature and pressure, but it often co-exists on Earth with its solid state, ice, and gaseous state, steam (water vapor). It is the ratio of the dynamic viscosity to its density, a force independent quantity. Viscosity Converting Chart - Convert between viscosity units like Centiposes, milliPascal, CentiStokes and SSU. Multigrade oils must fulfill two viscosity specifications, their viscosity grade consists of two numbers, e.g. t1 flow time of liquid 1. t2 flow time of water. The dif- ViscosiTy of gases marcia l. huber and allan h. harvey The following table gives the viscosity of some common gases as a function of temperature . Therefore, the viscosity of gases may be estimated with an accuracy sufficient for most engineering calculations, e.g. μ i. is the viscosity factor for a fluid, and the unit is: P a. s. . First, calculate the dynamic viscosity using the formula : η = Tγ where, τ = 0.76 N/m 2 and γ = 0.5 s -1 Now, η = τγ η = (0.76 N/m 2) / (0.5 (1/s)) η = 1.52 (N*s) / m 2 η= 1.52 Pa*s The fluid is mercury. Viscosity Types The viscosity on this page is the dynamic (absolute) viscosity. The greater the resistance to flow, the higher the viscosity, so for example, syrup has a … It refers to the fluid’s internal resistance to flow when force is applied. It is possible to calculate the minimum and maximum of the VG30. The dynamic viscosity coefficient divided by the density is called the kinematic viscosity and given the Greek symbol nu. Learn more about kinematic viscosity formula and related solved examples. ViscosiTy of gases marcia l. huber and allan h. harvey The following table gives the viscosity of some common gases as a function of temperature . Fluid Viscosity, sometimes referred to as dynamic viscosity or absolute viscosity, is the fluid's resistance to flow, which is caused by a shearing stress within a flowing fluid and between a flowing fluid and its container. Here we are discussing major Difference Between Kinematic And Dynamic Viscosity. Calculation. Absolute viscosity μ = 0.98 Ns/m 2. kinematic viscosity ν = 3 m 2 /s. Two types of viscosity are commonly used: dynamic viscosity μ and kinematic viscosity ν. The data gathered by the group are documented in the table below. The dynamic viscosity has the dimension ML-1 T-1 and the unit of kg/m.s (or, N.s/m 2 or Pa.s). More viscosity conversions are provided later in this text. ρ: fluid density. Dynamic viscosity is the resistance to movement of one layer of a fluid over another and is defined by Formula F7. Dynamic (absolute) viscosity is the tangential force per unit area required to move one horizontal plane with respect to an other plane - at an unit velocity - when … Any calculation involving the movement of fluids requires a value of viscosity. Where. Absolute viscosity N s per square m Kinematic viscosity, The density is: i.e. Absolute viscosity is the force that must be applied per unit area to move a sheet of liquid horizontally relative to another sheet of liquid at one unit of speed. If a sphere is dropped into a fluid, the viscosity can be determined using the following formula: η = 2ga2(Δρ) 9v η = 2 g a 2 ( ∆ ρ) 9 v Where ∆ ρ is the density difference between fluid and sphere tested, a is the radius of the sphere, g is the acceleration due to gravity and v is the velocity of the sphere. Dynamic (absolute) viscosity: Dynamic viscosity is also known as absolute viscosity and most often relates to non-Newtonian fluids. Absolute viscosity is a parameter for measuring the internal resistance in the fluid. In liquids it usually decreases with increasing temperature, whereas, in most gases, viscosity increases with increasing temperature. The other quantity called kinematic viscosity (represented by the Greek letter ν "nu") is the ratio of the viscosity of a fluid to its density. Dynamic viscosity is also known as the absolute viscosity of liquids. by using the following correlation for the viscosity of quasi-spherical molecules (1,2): where µ: gas viscosity, Poise M: molecular weight, grams T: absolute temperature, K σc: collision diameter, Ångstrom Given two known temperature-viscosity points, the viscosity of a liquid can be calculated for a target temperature. ν = η / ρ. Kinematic viscosity can be obtained by dividing the absolute viscosity of a fluid with the fluid mass density. The inverse of viscosity is called fluidity [ McCain, 1990 ]. η= F/ [A×(u/h)] η= τ /(u/h) N-s/m² Kinematic Viscosity : It is defined as the ratio of absolute viscosity to the density of fluid. There are several formulas and equations to calculate viscosity, the most common of which is Viscosity = (2 x (ball density – liquid density) x g x a^2) ÷ (9 x v), where g = acceleration due to gravity = 9.8 m/s^2, a = radius of ball bearing, and v = velocity of ball bearing through liquid. The viscosity of a liquid as a function of temperature can be approximated with the Andrade correlation. Description. Kinematic viscosity is calculated by dividing the absolute number by the density of the fluid. Many a times, the ratio of dynamic viscosity to density appears frequently and this ratio is given by the name kinematic … Oil viscosity. The minimum viscosity at 60°C can be calculated like this: 80 * 30 = 2400 Poise while the maximum viscosity is also calculated by this formula 120 * 30 = 3600 poise. This variation is provided in Crane (1988) as a graph for hydrocarbon vapors and natural gases, and as an equation for other common gases. Unless otherwise noted, the viscosity values refer to a pressure of 100 kPa (1 bar) . Kinematic viscosity is the ratio of - absolute or dynamic viscosity to density - a quantity in which no force is involved. Absolute or dynamic viscosity is used to calculate Reynold's Number to determine if a fluid flow is laminar, transient or turbulent.. Online Water Viscosity Calculator In the absolute pressure (P abs) pressure is measured with reference to a zero pressure (full vacuum). Calculate the viscosity at a given temperature, when the viscosity is known at two temperatures. Another method for calculating the viscosity of air at a specified temperature and pressure will also be presented and discussed. Calculate the dynamic viscosity (η) in pascal seconds (Pa s) from the expression η=KL/w, Where, L = the angular momentum in Newton meters, w = the angular speed in radians per second. This variation is provided in Crane (1988) as a graph for hydrocarbon vapors and natural gases, and as an equation for other common gases. Unless otherwise noted, the viscosity values refer to a pressure of 100 kPa (1 bar) . Absolute Viscosity of the sample = Average value of 1 and 2. Oil is a … Also known as the coefficient of kinematic viscosity. The kinematic viscosity and absolute viscosity can be converted using the following formulas: Kinematic viscosity (stokes) = = (cm 2/sec), (centistokes = = mm /s) This question 1 Figu res in brackets indicate the literature references al the end of this papt~r. To accurately measure either absolute or kinematic viscosity, or to measure of a fluid under the force of gravity, it is multiplied by its density. Kinematic viscosity is dynamic viscosity divided by density (Formula F7. , η 1, η 2 represents the absolute viscosity of PEG 200 and 1,2-PDA. In liquids it usually decreases with increasing temperature, whereas, in most gases, viscosity increases with increasing temperature. ν = μ/ρ. This is known as Dynamic Viscosity. The viscosity acts as an important fluid property during the analysis of liquid behavior and fluid motion near solid boundaries. 8) where b and S are constants and T is temperature expressed in Eq. Sutherland's formula for calculating the viscosity of a gas at a specified gas temperature is shown below along with an explanation of the parameters in the equation. The parameters in Sutherland's formula are as follows: μ = the viscosity of the gas at temperature, T, in the same units as μo. Viscosity is nothing but a fluid's resistance to flow. For example, honey has a higher viscosity than water. The formula for dynamic or absolute viscosity is 1 centipoise (cP) equals 1 millipascal-second (mPa-s). Viscosity denotes opposition to flow. This is used to make allowances for high viscosity fluids. Properties of air at 1 atm pressure Viscosity is a material property which describes the resistance of a fluid to shearing flows. Solution to Reynolds Number Question . In absolute viscometers the flow in the measuring geometry is well defined. Viscosity is measured using a viscometer. 8. Absolute Viscosity is the force needed by a fluid to overcome its own internal molecular friction so that it can flow. This tangential force acts on a unit area which is needed to make the liquid move in a horizontal plane with respect to another plane with a unit velocity while the liquid molecules maintain a unit distance apart. Dynamic viscosity = It is a force required to overcome the internal friction of any fluid. Dynamic Viscosity Formula for the fluid will define its internal resistance to flow due to some shearing force. The unit employed for measuring the dynamic viscosity of a fluid is Pa.s (where ‘Pa’ stands for Pascal and ‘s’ stands for seconds). For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. nu = mu / r. Re = V * L / nu. The equation is written. It corresponds roughly to the intuitive notion of a fluid's 'thickness'. The units of nu are length^2/sec. This article discusses several models of this dependence, ranging from rigorous first-principles calculations for monatomic gases, to empirical correlations for liquids. Nitrogen-viscosity Baronetal. (7.25) ν = μ ρ. and depends on both air temperature and pressure. In 1893 William Sutherland, an Australian physicist, published a relationship between the dynamic viscosity, , and the absolute temperature, , of an ideal gas. The most acceptable method in the United States is the Saybolt viscosimeter, Figure 40.17.. Sign … Consider, the viscosity of that fluid is 0.45 Ns/m 2 and 950 kg/m 3 is the value of relative density. Plug the information you have obtained into the formula for viscosity: viscosity = [2(p s-p l)ga 2]/9v where p s is the density of the sphere, p l is the density of the liquid, g is acceleration due to gravity (a fixed value of 9.8 m/s 2), a is the radius of the sphere, and v is the velocity of the sphere. In this paper an attempt has been made to find temperature dependent dynamic (or absolute) viscosity of some common domestic usable Oil namely Soya bean Oil, Coconut oil, Kerosene oil and 2T Oil. The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress.. For further definitions, go to Absolute (dynamic) and kinematic viscosity. A water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. The notation P = 0 indicates that the low-pressure limiting value is given . It can also be thought of as a measure of a fluid’s thickness or its resistance to objects passing through it. formula is: Where: N S = viscosity of solution N 0 = viscosity of solvent c = concentration in grams/mL Kinematic Viscosity Definition: The absolute viscosity of a fluid divided by the density of the fluid. is the subject of this and the two accompanying papers [4,5]. Ques. viscosity, resistance of a fluid (liquid or gas) to a change in shape, or movement of neighbouring portions relative to one another. viscosity) or non-Newtonian liquids (shear dependent viscosity or apparent viscosity). Dynamic viscosity (sometimes referred to as Absolute viscosity) is obtained by dividing the Shear stress by the rate of shear strain. The kinematic viscosity of the lubricants, i.e. The shear viscosity (or viscosity, in short) of a fluid is a material property that describes the friction between internal neighboring fluid surfaces (or sheets) flowing with different fluid velocities. Power is given by the combination of four items: the specific gravity SG, the total head , the flow rate Q and the efficiency of the pump eta .The specific gravity SG is the ratio of the fluid's density to that of water at standard conditions, for water the value of SG equals 1. viscosity known as dynamic (or absolute) and kinematic viscosity. Fluid Viscosity, sometimes referred to as dynamic viscosity or absolute viscosity, is the fluid's resistance to flow, which is caused by a shearing stress within a flowing fluid and between a flowing fluid and its container. Formula: The kinematic viscosity = Dynamic viscosity / Fluid mass density. d/ A .ⅴ = M L T − 2 . Water is a chemical compound with the chemical formula H2O. Dynamic viscosity of gases is primarily a function of temperature. (3 marks) Ans. These are the conventions used in this book. The fuels differ in their freeze point specifications (-40 °C for JET A and -47 °C for Jet A1). The Sutherland formula canbe used to calculate the viscosity of a gas at a specified temperature if the Sutherland constant isavailable for the gas. Informally, viscosity is the quantity that describes a fluid's resistance to flow. Absolute viscosity in terms of leakage velocity viscosity_of_oil = (Change in pressure)* (Radius)^2/ (8*Incremental length in the direction of Velocity*Velocity) Go Density of liquid in terms of loss of liquid head density = (64*Viscosity of oil*Velocity)/ (2*[g]*Loss of liquid head* (Outside diameter of seal ring)^2) Go Loss of liquid head u/y ratio is called shear deformation or the rate of shear velocity. Absolute viscosity is one of the most important parameters in the development and modeling of applications that involve fluid flow. mm = absolute (or dynamic) viscosity of the slurry mixture mL = absolute (or dynamic) viscosity of the carrying liquid - Particles are fairly rigid 1-5-3 Absolute (or Dynamic) Viscosity of Mixtures with High Volume Concentration of Solids K2 = 10.05 … The difference between VG10 and VG30. Dynamic Viscosity (Absolute Viscosity) Kinematic Viscosity; One way is to measure fluid’s resistance to flow when an external force is applied. Dynamic (absolute) viscosity: Dynamic viscosity is also known as absolute viscosity and most often relates to non-Newtonian fluids. Calculate the dynamic viscosity (η) in pascal seconds (Pa s) from the expression η=KL/w, Where, L = the angular momentum in Newton meters, w = the angular speed in radians per second. 26.13). Absolute viscosity provides a measure of a fluid’s internal resistance to flow. The dynamic viscosity is the tangential force per unit area needed to move the liquids in the horizontal plane with the unit viscosity. Fluid Viscosity. L / L 2 . ρ = 3/ (0.98) ρ = 3.0612 kg/m 3. The coefficient of viscosity is a measure of resistance to flow of the fluid. It will be discussed and used in example calculations. CGS Unit of Viscosity. The viscosity index can be calculated using the following formula: [citation needed] where U is the oil's kinematic viscosity at 40 °C (104 °F), and L and H are values based on the oil's kinematic viscosity at 100 °C (212 °F). What is the pressure necessary to move a plane of fluid with a shear rate of 0.35 s-1 and a dynamic viscosity of 0.018 Pa*s? Dynamic viscosity of gases is primarily a function of temperature. Viscosity models for mixtures. The unit employed for measuring the dynamic viscosity of a fluid is Pa.s (where ‘Pa’ stands for Pascal and ‘s’ stands for seconds). The viscosity of a fluid is a measure of its resistance to deformation at a given rate. Measured values span several orders of magnitude. The Absolute Temperature in Terms of Viscosity formula is defined as the ratio of constant B to the difference of logarithmic function of the viscosity of oil and constant A is calculated using absolute_temperature = Constant B /(ln (Viscosity of oil)-Constant a).To calculate Absolute Temperature in Terms of Viscosity, you need Constant B (B), Viscosity of oil (μ) & Constant a (A).

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