Quick-reference charts where you draw a line between temperature and a substance point to read the viscosity. The Go-To Equations
For wide-range calculations, Perry’s uses empirical correlation equations.
While simple fluids use standard definitions , Perry’s relies on specific models for temperature dependence: For Liquids Perry's Handbook Viscosity
is in Kelvin. For many common hydrocarbons, simpler forms like are provided.
Unlike liquids, gas viscosity with temperature. Perry’s frequently cites Sutherland's Formula for these predictions: Quick-reference charts where you draw a line between
lnμ=A+BT+ClnT+DTEl n mu equals cap A plus the fraction with numerator cap B and denominator cap T end-fraction plus cap C l n cap T plus cap D cap T to the cap E-th power
μ=μ0(0.555T0+C0.555T+C)(TT0)1.5mu equals mu sub 0 open paren the fraction with numerator 0.555 cap T sub 0 plus cap C and denominator 0.555 cap T plus cap C end-fraction close paren open paren the fraction with numerator cap T and denominator cap T sub 0 end-fraction close paren to the 1.5 power : Viscosity at temperature (Rankine). : Sutherland's constant for the specific gas. Finding the Data in the 9th Edition Go to product viewer dialog for this item. Perry's Chemical Engineers' Handbook, 9th Edition [eBook] For many common hydrocarbons, simpler forms like are
Thousands of organic and inorganic compounds are listed with experimental viscosity values at specific temperatures.