March 2003
Intermediate to advanced
1056 pages
32h 58m
English
book
Transport Processes and Separation Process Principles (Includes Unit Operations) Fourth Edition
by Christie John Geankoplis
Content preview from Transport Processes and Separation Process Principles (Includes Unit Operations) Fourth Edition
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7.5. MOLECULAR DIFFUSION PLUS CONVECTION AND CHEMICAL REACTION
7.5A. Different Types of Fluxes and Fick's Law
In Section 6.2B the flux 
was defined as the molar flux of A in kg mol A/s · m2 relative to the molar average velocity νM of the whole or bulk stream. Also, NA was defined as the molar flux of A relative to stationary coordinates. Fluxes and velocities can also be defined in other ways. Table 7.5-1 lists the different types of fluxes and velocities often used in binary systems.
| Mass Flux (kg A/s · m2) | Molar Flux (kg mol A/s · m2) | ||||
|---|---|---|---|---|---|
| Relative to fixed coordinates | nA = ρ | ||||
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