# porous turbulence model help

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

 July 15, 2014, 07:39 porous turbulence model help #1 New Member   xue chen Join Date: Apr 2014 Posts: 7 Rep Power: 3 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. etc.... 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) */ DEFINE_SOURCE(kpa_PdL,c,t,dS,eqn) { real source,ck,um; real fai,dp,k,con; ck=0.28; 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; } DEFINE_SOURCE(ybsl_PdL,c,t,dS,eqn) { 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; }

 Tags porous，turbulence model

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post prince_pahariaa FLUENT 6 November 25, 2014 13:22 C.C FLUENT 0 August 29, 2013 10:44 raffale OpenFOAM 0 August 23, 2012 05:45 Michiel CFX 12 January 25, 2010 04:20 zhzhguo FLUENT 2 November 1, 2004 08:10

All times are GMT -4. The time now is 21:08.