{"id":372587,"date":"2024-07-18T13:59:52","date_gmt":"2024-07-18T13:59:52","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/372587\/"},"modified":"2024-07-18T14:11:32","modified_gmt":"2024-07-18T14:11:32","slug":"372587","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/372587\/","title":{"rendered":"Reply To: Fluent Combustion Problem"},"content":{"rendered":"

<p> <\/p><p>Thanks for your repley.<\/p><p>Indeed, the mesh I attached has a low quality. I already tried with high refined mesh, but it also doesn’t work. I went back to low mesh to improve calculation time, because some simulations were really really long (for example after patching temperature and\/or species, the calculation time is extremly high, more than 20min for 1 iteration).<\/p><p>I understand that the problem might be blowoff limit of the flame, but the burner that I’m studying have a ‘simple’ geometry, without swirl\/pre-heanting or other thing to stabilize the flame. A worker already did a thesis with this burner and succeed to obtain good stabilization with ‘real’ experiment. Hence, I think the problem might comes from my model…<\/p><p>I succeed to modelize using the Non-Premixed combustion, with Steady-Diffusion Flamelet + prompt and thermal NOx => perfect results.<\/p><p>My problem is that for the future, I would like to add ammonia in my model, and I’ll need fuel NOx calculations, which is impossible with Non-Premixed model without activating Discrate Phase, not suited for my case (I think).<\/p><p> <\/p><p>Hence, the EDC model seems to be the best solution in my case, since this model can calculate NOx model with the mechanism imported.<\/p><p> <\/p><p>Do you have any advice please ? Thanks.<\/p><p> <\/p><\/p>\n","protected":false},"template":"","class_list":["post-372587","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