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Engineering
Materials and Chemical Engineering
Modelling of two phase flow in packed bed (continued)
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[QUOTE="TonyStewart, post: 6896276, member: 735459"] FWIW [URL='https://en.wikipedia.org/wiki/Darcy%27s_law']https://en.wikipedia.org/wiki/Darcy's_law[/URL] [URL='https://www.wikiwand.com/en/Buckley%E2%80%93Leverett_equation']https://www.wikiwand.com/en/Buckley–Leverett_equation[/URL] [URL]https://en.wikipedia.org/wiki/Black-oil_equations[/URL] The Constitutive relationships need to be assumed or defined to include all fluid properties, such as; density, viscosity, and thermal conductivity, which may vary with saturation and phase distribution. In another unrelated question on energy conversion for work done on a conveyor belt, I postulated if one desires maximum power transfer or energy thruput or MPT or max. energy flow with a lossy interface (eddy currents) the minimum energy lost is 50% due to the MPT theorem. I also stated, in theory, if loss resistance is constant , time is irrelevant to efficiency and friction is irrelevant to losses. (not true here for nonlinear velocity related losses) However, various time constants can be linearized from these complex models for certain assumptions. FWIW ( TL;DR both threads ) so just a comment. [/QUOTE]
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Materials and Chemical Engineering
Modelling of two phase flow in packed bed (continued)
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