{"id":370935,"date":"2024-07-08T11:22:57","date_gmt":"2024-07-08T11:22:57","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/370935\/"},"modified":"2024-07-08T11:22:57","modified_gmt":"2024-07-08T11:22:57","slug":"370935","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/370935\/","title":{"rendered":"Reply To: question on particle deposition with the turbulence dispersion in pipe flow"},"content":{"rendered":"

<p>@Rob<\/p><p>Hi Rob, thank you for your reply! Very sorry for the delayed response! <\/p><p>The height of the first cell is 2E-05m (center of the cell), and the diameter of droplet is 1.4um-21um. <\/p><p>In my case, the turbulence dispersion should drive the particles deposits on the pipe wall. Actually, i model this case just following a research paper with the name of  “Towards quantitative prediction of aerosol deposition from turbulent flows”, the conclusion is that “The use of isotropic turbulence models resulted<br>in over-prediction of V+ by more than 3 orders of magnitude for tao_plus 0.2, whilst the anisotropic RSM gave results in good agreement with experiment. ” But in my case, even i use the same model settings as the research paper, there is little deposition for the case of 1.4um (tao_plus 0.2). In fact , a lot of research papers show the same results. So i am really confused. It seems that the particles are getting stuck in the boundary layer and never colliding with the wall.<\/p><p>The attached link https:\/\/www.researchgate.net\/publication\/222936725_Towards_quantitative_prediction_of_aerosol_deposition_from_turbulent_flows<\/a> shows the reference paper. <\/p><p>BTW, how can i show you my case in this forum? <\/p><p>Thanks in advance!<\/p><\/p>\n","protected":false},"template":"","class_list":["post-370935","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