{"id":363747,"date":"2024-04-23T14:16:29","date_gmt":"2024-04-23T14:16:29","guid":{"rendered":"\/forum\/forums\/reply\/363747\/"},"modified":"2024-04-23T14:16:29","modified_gmt":"2024-04-23T14:16:29","slug":"363747","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/363747\/","title":{"rendered":"Reply To: Modeling Methane Explosion Ignition by Patch"},"content":{"rendered":"

<p>Hello,<\/p><\/p>\n

    \n
  1. Is the pipe open-ended on both sides, or closed at one end and which end?<\/li>\n
  2. If detonation is expected, I suggest you use the density-based solver (DBNS). The pressure-based solver (PBNS) should also work if the Mach numebr does not go very high.<\/li>\n
  3. I suggest you use the “Finite-Rate\/No TCI” option.<\/li>\n
  4. Are you using a 1-step reaction scheme or multiple reaction scheme. For 1-step reaction, you need to patch a temperature and the composition that correspond to the burnt state of the mixture.<\/li>\n
  5. The mesh needs to be sufficient fine around the flame front (and also shock wave). You can use automatic mesh refinement\/coarsening<\/li>\n
  6. The time step size also needs to be much smaller because everything goes very fast. I think 0.005 s is too large. It needs to be around 1E-5 s, or even smaller.<\/li>\n<\/ol>\n

    <p> <\/p><\/p>\n","protected":false},"template":"","class_list":["post-363747","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/363747","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/363747\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=363747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}