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The dimensional number associated with mass transfer is1. Schmidt Number2. Nusselt Number3. Biot Number4. Mach Number |
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Answer» Correct Answer - Option 1 : Schmidt Number Concept: Schmidt number is a dimensionless number and defined as the ratio between momentum diffusivity and mass diffusivity, and is used to characterize the fluid flows where both momentum and mass transfer are involved. It is given by \(Schmidt\;number\;\left( {Sc} \right) = \frac{{Momentum\;diffusivity}}{{Mass\;diffusivity}} = \frac{{\nu \;\left( {kinematic\;viscosity} \right)}}{{D\;\left( {mass\;diffusivity} \right)}}\) For higher Schmidt numbers, momentum diffusion dominates, and for lower Schmidt numbers, mass diffusion dominates Schmidt number can be considered analogous to Prandtl number, while the Prandtl number describes the diffusion of heat (thermal boundary layer). Schmidt number describes the diffusion of mass (concentration boundary layer). |
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