Mass transfer by diffusion. Thus, the mass transfer rate is:
E.
Mass transfer by diffusion. This is followed by the presentation of a number of applications. . Even a tiny element of fluid of microscopic dimension contains enormous numbers of molecules of the species at the local concentration of that element. Thus, the mass transfer rate is: E. Cussler, Diffusion: Mass Transfer in Fluid Systems, 3rd edition, Cambridge University Press, 2016. Mass transfer occurs by two basic mechanisms: (1) molecular diffusion by random and spontaneous micro-scopic movement of individual molecules in a gas, liquid, or solid as a result of thermal motion; and (2) eddy (turbulent) diffusion by random, macroscopic fluid motion. In all the above situations, mass transfer occurs by just two mechanisms: diffusion, which is molecular in origin, and convection, which is bulk movement of fluid. See examples, applications, and references for further study. Learn the basics of diffusion and mass transfer in mixtures, including Fick's law, transport analogy, and linear-driving-force model. Convective mass transfer is really diffusion (the random movement of molecules) in combination with advection (molecules being carried along with the motion of the fluid). fpp1 esxwg03 vf3xde c4n4qwu h9xajbf ig xzi9 1ot9eney lui jk1b
Back to Top
