CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

Varying BCs

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

LinkBack Thread Tools Search this Thread Display Modes
Old   March 3, 2003, 06:30
Default Varying BCs
Posts: n/a
Hello Everybody, I am trying to simulate a hydrogen storage tank for automobiles. The hydrogen enters the system and reacts with metal to form metal hydride. This is an exothermic reaction. Therefore both temperature and pressure inside the system will increase. For this reason, my BC will change for every timestep depending on the amount of hear energy produced in the previous timestep as well as the pressure increase inside the system will determine the new velocity of hydrogen going into the system. There are some other parameters that are also effected in this process. All this has to be done using a subroutine. As a first step I used a simple subroutine in which I created a 2D array in which I put time step in the first column and temp in the second column. But the temperature field in the BC area of CFX build is not accepting a file name (it appears, it will not accept anything other than a number except 'e' for exponent). The second step was to directly write a subroutine and link it to the CFX. This also didnt work properly. Can anyone help me? Thanks in advance. Azeez
  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dealing with BC's in OF 1.6 vkrastev OpenFOAM Running, Solving & CFD 5 September 4, 2012 12:58
Pressure BCs or Periodic BCs for model of frost on vertical surface? FLUENT 2 March 26, 2010 03:02
BCs for Pressure Correction Equation (SIMPLE) Bharath Somayaji Main CFD Forum 1 March 1, 2006 07:12
Time Varying BC A.S. Siemens 1 January 31, 2005 07:37
Need Assistance: BCs for k-e model implementation Dean Schrage Main CFD Forum 3 August 11, 2001 02:02

All times are GMT -4. The time now is 00:20.