{"id":348345,"date":"2024-02-01T17:10:55","date_gmt":"2024-02-01T17:10:55","guid":{"rendered":"\/forum\/forums\/reply\/348345\/"},"modified":"2024-02-01T17:10:55","modified_gmt":"2024-02-01T17:10:55","slug":"348345","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/348345\/","title":{"rendered":"Reply To: Joule-Thomson effect"},"content":{"rendered":"

<p>Thank you both for your reply!<br><br>@V.V.<br>1. Would you suggest first order discretization only for energy or for all?<br>2. How low should I go with the URF for energy or with the CFL number?<br>3. Mentioning the initial gauge pressure is a very good point. First I thought that the flow won’t become supersonic so I just set the initial gauge pressure to 10 MPa. But my not converged results so far are indeed supersonic and there is a shock (Mach number > 1). How do I set the supersonic\/initial gauge pressure<\/strong> correctly? I set the operating pressure to 0 Pa.<br>4. As I assume that the Mach number exceeds 1, is the pressure based solver off the table? I still have the feeling that pressure-based works a bit better in my case.<br>5. I do monitor mass flow rate at the inlet and outlet. It’s the same value at the inlet as at the outlet (negative). Is that what you ment with monitoring flux?<br><br>With bad I mean things like that:<\/p><p>density-based:<\/p><p><\/p><p>pressure-based:<br><br><br>@NickFL<br>I will try to run the calculation for more iterations and “babsit” it. In what diensions do you talk? Is the expected time for such a difficult model more like 20000 iterations? Then I’m gonna babysit for days?<br>The 2D model might be a good starting point, I’ll try that.<\/p><\/p>\n","protected":false},"template":"","class_list":["post-348345","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t