Viscosity for solid in Gas-Solid Two-phase Flow -- CFD Online Discussion Forums

January 23, 2008, 11:00	Viscosity for solid in Gas-Solid Two-phase Flow	#1
jakjak Guest Posts: n/a	Quoting from CFX-11 Modelling Guide: <blockquote style="padding-top:1em; font-family: courier"> "... In such problems (Gas-Solid Flow), you should assign the solid phase a small insignificant molecular viscosity. This is permissible, as the physics are dominated by inter-phase drag and turbulence effects. ..." </blockquote> I was wondering what is the reason behind assigning a "small insignificant molecular viscosity"? I would think that a more viscous "fluid" would represent more a solid than one that is less viscous. Any thoughts?...

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