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The Sherwood number (Sh) (also called the mass transfer Nusselt number) is a dimensionless number used in mass-transfer operation. It represents the ratio of the total mass transfer rate (convection + diffusion) to the rate of diffusive mass transport, [1] and is named in honor of Thomas Kilgore Sherwood. It is defined as follows
A larger Nusselt number corresponds to more active convection, with turbulent flow typically in the 100–1000 range. [2] A similar non-dimensional property is the Biot number, which concerns thermal conductivity for a solid body rather than a fluid. The mass transfer analogue of the Nusselt number is the Sherwood number.
In continuum mechanics, the Péclet number (Pe, after Jean Claude Eugène Péclet) is a class of dimensionless numbers relevant in the study of transport phenomena in a continuum. It is defined to be the ratio of the rate of advection of a physical quantity by the flow to the rate of diffusion of the same quantity driven by an appropriate ...
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As with the Nusselt number, the physical meaning of the Sherwood number should be the ratio of the lengscale to the boundary layer thickness. That is because the mass flux is given by the mass transfer coefficient times the difference (fluid bulk concentration minus surface concentration) h D ( C b u l k − C s u r f ) {\displaystyle h_{D}(C ...
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According to a release from the Pasadena Police Department, suspect Dennis Erwin Brandl Jr. allegedly entered Pasadena Memorial High School in Pasadena, Texas, around 6:00 p.m. local time through ...