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It is of not much importance, but calculated as
T.V. = 15 + 148(kinematic viscosity)
It is used for less volatile fractions and important for illuminating oils.
Ring no. is defined for illuminating oils which should be in a range of 60 to 130
Ring no. = (T.V/5)-10(46-API)
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A dimensionless number which is a ratio of kinematics viscosity to thermal diffusivity is known as?
The Prandtl Number is a dimensionless number approximating the ratio of momentum diffusivity (kinematic viscosity) and thermal diffusivity and can be expressed asPr = v / αThe Prandtl number can alternatively be expressed asPr = μ cp / kThe Prandtl Number is often used in heat transfer and free and forced convection calculations. where:ν : kinematic viscosity, ν = μ / ρ, (SI units : m2/s)α : thermal diffusivity, α = k / (ρcp), (SI units : m2/s)μ : dynamic viscosity, (SI units : Pa s)k: thermal conductivity, (SI units : W/(m K) )cp : specific heat, (SI units : J/(kg K) )ρ : density, (SI units : kg/m3 ).answered by : eng_moom
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What physical change was noted in dissolving one gram of sugar in 5ml of water?
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A dimensionless number which is a ratio of kinematics viscosity to thermal?
The ratio between the kinematic viscosity and the thermal diffusivity is called the Prandtl Number.
What thermal energy is transferred from one substance to another it is called what?
viscosity
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Examples are: density, thermal conductivity, refractive index, viscosity.
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Examples are: density, thermal conductivity, refractive index, viscosity.
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Examples are: density, thermal conductivity, refractive index, viscosity.
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What has the author James Torrance Ritchie Watson written?
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Examples: density, viscosity, hardness after drying, adhesivity, thermal and electrical conductivity, etc.
What are physical properties of paint?
Examples: density, viscosity, hardness after drying, adhesivity, thermal and electrical conductivity, etc.
What does a liquid substance have?
A liquid has a density, refractive index, freezing point, boiling point, thermal stability, compressibility, viscosity etc.
Why are silicon are better lubricants than petroleum products?
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What is prandtl number and what is its significance?
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