CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Defining Viscous and Inertial Resistance Coeff.s

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   July 4, 2001, 11:32
Default Defining Viscous and Inertial Resistance Coeff.s
Posts: n/a
My model involes a porous media fluid. The Fluent manual shows how to deduce the inertial resistance coefficient. However, no information is given about the former.

Somebody help me.

  Reply With Quote

Old   July 5, 2001, 02:37
Default Re: Defining Viscous and Inertial Resistance Coeff
Posts: n/a
Can't you calculate it from Darcy's law (the permeability) ?

  Reply With Quote

Old   July 12, 2001, 05:02
Default Re: Defining Viscous and Inertial Resistance Coeff
Posts: n/a
If you know the pressure drop of the fluid in the porous media at several given flowrates, you can find the 2 coeff. dP/dx = A*V + BV

V can be easily deduced from the flowrate. dP is the pressure drop. dx is the thickness of the porous media.

With Excel you can then easily plot dP/dx = f(V).

Then you can find A and B.

Afterwards you can compute the viscous and inertial coeff. to put into Fluent : C2 = 2*A/rho 1/alpha = B/nu (nu=dynamic viscosity)
  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Inertial Resistance and Viscous Resistance Data ravitejakatragadda FLUENT 1 September 24, 2014 07:06
Viscous and Inertial Resistance in Porous Media aulu FLUENT 0 September 14, 2011 05:21
viscous resistance and inertial resistance for microfilter zhhjll FLUENT 1 July 14, 2011 08:55
Inertial and Viscous Resistance oky FLOW-3D 2 November 24, 2010 02:46
how to calculate the viscous and inertial resistance coefficients? omurakbayir FLUENT 1 November 22, 2010 23:36

All times are GMT -4. The time now is 15:49.