CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Phoenics

energy equation formulation

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 4, 2001, 14:30
Default energy equation formulation
  #1
Pedro
Guest
 
Posts: n/a
Hello! I started my numerical simulations with a simple geometry 2D of an indoor space. Due to the conditioning equipment used, I select the Turbulence Model KE-EP Lam & Bremhorst for low Reynolds Number to avoid the use of wall functions and the Temperature in the formulation of the energy equation to simulate the heat transfer. My doubt is in TOTAL or STATIC formulation of the equation. Can someone help me and explain the matematical difference on the terms of the two formulations of the energy equation. Thanks, Best regards,
  Reply With Quote

Old   July 5, 2001, 13:17
Default Re: energy equation formulation
  #2
Mike Malin
Guest
 
Posts: n/a
In general, the energy equation can be solved in many forms and PHOENICS provides for two variants, total or static. Further one might solve for the enthalpy (H1) or temperature variable (TEM1)in PHOENICS.

STATIC means PHOENICS includes built-in energy sources to account for mechanical dissipation (important for high Brinkman and Eckert numbers) and temporal/spatial compression-expansion effects (important in highly compressible and expanding flow). TOTAL means these terms are omitted from the energy equation and so what is solved is an again for the total energy.

  Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
energy equation Tiz Main CFD Forum 1 April 1, 2007 02:13
FEM Formulation of 2D mass, momentum and energy eq Amit Main CFD Forum 13 May 6, 2005 14:23
About the energy equation maximus Main CFD Forum 0 March 6, 2005 10:15
Energy equation Suresh Balasubramanian FLUENT 1 April 6, 2003 03:54
About equation formulation Ben Phoenics 1 April 24, 2002 11:46


All times are GMT -4. The time now is 18:06.