# PPD & PMV value

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

 April 8, 2015, 23:01 PPD & PMV value #1 New Member   Tanti Ali Join Date: Apr 2015 Posts: 3 Rep Power: 3 Hello, I'ma new user to CFX ANSYS 15.0. I did a comparison between simulation on occupied room thermal comfort study. I have a few problem, 1.How can I calculate the PPD & PMV? 2. So far I can get the MRT calculation by the comfort factor macros. Yet it can't be displayed in CFX-Pro on the surface. Please do advise. Thank you.

 April 9, 2015, 06:09 #2 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 12,832 Rep Power: 100 Please, no jargon. What is PPD, PMV and MRT? What do you mean by CFX-Pro?

 April 9, 2015, 09:00 #3 New Member   Tanti Ali Join Date: Apr 2015 Posts: 3 Rep Power: 3 MRT (Mean Radiant Temperature) PMV (Predicted Mean Vote) PPD (Predicted Percentage of Dissatisfied) I already followed the guide "A CFD-Post macro is available for this purpose, and is accessed using the Macro Calculator from the Tools menu". In the solution part, I plot the MRT contour on the plane but the results is failed. But when the calculator calculate it showed a value for the plane. By means, in the legend of MRT, contour for T=289K is yellow color but when I plot on the surface, the yellow color did not appear. I have found comfort-factors.ccl and usr_pmvppd.F file but I have failed here. The CFD-Pro is a typo error. Please do advice. Thanks

 May 22, 2015, 08:15 #4 New Member   Jiangxi Join Date: Jan 2014 Posts: 6 Rep Power: 4 Hello Tanty Ali, I am also working on a similar project. Since you have figure out how to plot MRT in ANSYS. Could you please do me a favor and tell me, what model does ANSYS CFX uses to calculate mean radiant temperature and what is the equation for it? As far as I know it doesn't use the conventional ASHRAE method to determine the MRT based on surrounding wall temperature. I would really appreciate your help. I will have to plot PMV and PPD but I am now in very initial stage and not really familiar with ANSYS CFX. So at first I just wanted to know the equation of MRT used by CFX. Regards!!

 May 22, 2015, 21:42 #5 New Member   Tanti Ali Join Date: Apr 2015 Posts: 3 Rep Power: 3 Hi Madeinspace, I haven't solved yet the MRT, PPD and PMV issues. Maybe because i can't access to fortran compiler. Sorry for this.I have changed the simulation to Flow Simulation using Solidwork cos I'm running out of time for submission. Regards.

 May 23, 2015, 05:53 #6 New Member   Jiangxi Join Date: Jan 2014 Posts: 6 Rep Power: 4 Yes, Flow simulation is very easy with powerful GUI. I have also been using Flow Simulation but been advised to change to CFX. So I was trying to give it a try. Thanks anyway.

 Tags #pmvppd

 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 chunying FLUENT 3 January 2, 2015 02:26 Lakshmisundar CFX 3 July 13, 2014 10:23 jelon STAR-CCM+ 1 April 5, 2010 16:59 John CFX 1 May 8, 2008 08:46 sarah FLUENT 0 May 24, 2007 03:00

All times are GMT -4. The time now is 20:33.