CFD Online Logo CFD Online URL
Home > Forums > FLUENT

porous turbulence model help

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

LinkBack Thread Tools Display Modes
Old   July 15, 2014, 07:39
Default porous turbulence model help
New Member
xue chen
Join Date: Apr 2014
Posts: 7
Rep Power: 5
hitchenxue is on a distinguished road
I use ANSYS Fluent to do some work on the turbulent flow in porous media with macroscopic model. I use UDF to add the additional source caused by porous media with p-dL model. Now I would like to validate my work using the flowing papers.

Marcelo J.S. de Lemos.Turbulent kinetic energy in a moving porous bed” in International Communications in Heat and Mass Transfer 35 (2008) 1049–1052

Marcos H. J. Pedras, Marcelo J. S. de Lemos. On the Mathematical Description and Simulation of Turbulent Flow in a Porous Medium Formed by an Array of Elliptic Rods.Journal of Fluids Engineering 2001
Renato A. Silva, Marcelo J.S. de Lemos. Turbulentflow in a composite channel.International Communications in Heat and Mass Transfer 38 (2011) 1019–1023.

I did not get the same resluts.
I use physical velocity for all the simulations, and my UDF the additional terms with P-dL model are attached. please help me out, I have been doing the verification for two months, and found nothing to solve my problem.

/************************************************** *********************/
/* P-dL(,2001) */
real source,ck,um;
real fai,dp,k,con;


Properties(c, t, &fai, &dp, &k, &con);
um=sqrt( C_U(c,t)*C_U(c,t)+C_V(c,t)*C_V(c,t) );
source =fai* ck*C_R(c,t)*C_K(c,t)*fai*um/sqrt(k);

dS[eqn]=fai* ck*C_R(c,t)*fai*um/sqrt(k);
return source;
real source,ck,c2,um;
real fai,dp,k,con;

ck=0.28; c2=1.92;

Properties(c, t, &fai, &dp, &k, &con);
um=sqrt( C_U(c,t)*C_U(c,t)+C_V(c,t)*C_V(c,t) );
source =fai* ck*c2*C_R(c,t)*C_D(c,t)*fai*um/sqrt(k);

dS[eqn]=fai* ck*c2*C_R(c,t)*fai*um/sqrt(k);
return source;
hitchenxue is offline   Reply With Quote


porous,turbulence model

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
Fluent :- turbulence Model prince_pahariaa FLUENT 9 May 20, 2016 03:41
new turbulence model in Fluent C.C FLUENT 0 August 29, 2013 10:44
What model of turbulence choose to study an external aerodynamics case raffale OpenFOAM 0 August 23, 2012 05:45
Centrifugal Pump and Turbulence Model Michiel CFX 12 January 25, 2010 04:20
turbulence model in porous media zhzhguo FLUENT 2 November 1, 2004 08:10

All times are GMT -4. The time now is 18:03.