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
While simple fluids use standard definitions , Perry’s relies on specific models for temperature dependence: For Liquids Perry's Handbook Viscosity
Quick-reference charts where you draw a line between temperature and a substance point to read the viscosity. The Go-To Equations lnμ=A+BT+ClnT+DTEl n mu equals cap A plus the
For wide-range calculations, Perry’s uses empirical correlation equations. Perry's Handbook Viscosity
Unlike liquids, gas viscosity with temperature. Perry’s frequently cites Sutherland's Formula for these predictions: