Transport analogies

Chapter 4 Mass, Heat, and Momentum Transport Analogies. The transport of mass, heat, and momentum is modeled with analogous transport equations, except for the source and sink terms. Another difference between these equations is the magnitude of the diffusive transport coefficients. The similarities and differences between the transport of mass, heat, and momentum and the solution of the transport equations will be investigated in this chapter. 

Apply the resistance to transport analogy to describe sediment-water column transfer of a nonreactive compound. 

We have recently reported an alternative liquid precursor for the CVD of aluminum thin films.3 The main advantage of (AT,AT-dimethylethanamine)-trihydridoaluminum, frequently referred to by its trivial name dimethylethyl-amine alane (DMEAA), over (trimethylamine) trihydridoaluminum is that DMEAA is a liquid at room temperature, which provides stationary pressure conditions for better control of precursor transport. Analogous to the previously reported synthesis of (trimethylamine)trihydridoaluminum,4 the reaction of lithium tetrahydroaluminate(l —) with AT,AT-dimethyl-ethanaminium chloride in diethyl ether generates the stable liquid precursor DMEAA with high yield. 

The Biot number Bib for heat transport. Analogous to Bim, this is defined as the ration of the internal to external heat transfer resistance (intraparticle heat conduction versus interphase heat transfer). 

For gases, molecules are transported across the quasi-laminar sublayer by molecular diffusion, and then whether the gas molecule is actually taken up by the surface depends on the nature of the surface (e.g. whether it is wet) and the solubility and reactivity of the gas. Across the quasi-laminar sublayer, particles are transported analogously by Brownian... 

Physical properties of a fluid can be described within the context of transport analogies for all the transport processes. Numerical solutions to fluid dynamics problems require that the viscosity and the density p are known. Under isothermal conditions, if the fluid is Newtonian and incompressible, both of these physical properties are constants that depend only on the fluid, not the flow conditions. The viscosity p, is the molecnlar transport property that appears in the... 

Supiot makes a good point which is particularly applicable to the air transport analogy. The lack of central laws and regulations in market access that would otherwise ensure fairness of competition and worn out perception of sovereignty has made States control market access through a certain parochial protectionism, opening the door for various deals in the market. 

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