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#1 |
New Member
Ali
Join Date: Mar 2011
Posts: 27
Rep Power: 15 ![]() |
Hello,
I am going to simulate the behaviour of micron-sized particles in an non-Newtonian fluid medium. In fact, the flow viscosity follows the "power-law". I know that "DEFINE_DPM_DRAG(Drag_force,Re,p)" can pass the force per mass of each particle to Fluent, and that the returned valuee must be in form of " ![]() As you know, in powerlaw fluid, Re is defined as ![]() ![]() ![]() The problem is, how does Fluent define Re number? Does Fluent think of Newtonian Re or this definition of Re? Should I pass this Re in "18*Cd*Re/24" or the Newtonian Re? Thank you! |
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#2 |
New Member
Marcos
Join Date: Nov 2013
Posts: 12
Rep Power: 12 ![]() |
Quote:
Where you able to solve your problem? |
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#3 |
New Member
Join Date: May 2015
Posts: 9
Rep Power: 11 ![]() |
I think that if you use a PL rheology model, Fluent will evaluate the viscosity accordingly based on the magnitude of the rate of strain tensor, i.e. shear rate, for any grid cell. This viscosity is then used to compute the particle Reynolds number.
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