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The ratio of momentum diffusivity (kinematic viscosity) and mass diffusivity is referred as:(a) Nusselt number(b) Schimdt number(c) Sherwood number(d) Reynolds numberThis question was addressed to me in a national level competition.Enquiry is from External Mass Transfer topic in portion Heterogenous Reactions of Bioprocess Engineering

Answer»

Correct choice is (b) Schimdt number

Best explanation: SCHMIDT number (Sc) is a dimensionless number DEFINED as the ratio of momentum diffusivity (kinematic viscosity) and MASS diffusivity, and is used to CHARACTERIZE fluid FLOWS in which there are simultaneous momentum and mass diffusion convection processes.



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