{"id":365767,"date":"2024-05-07T06:40:38","date_gmt":"2024-05-07T06:40:38","guid":{"rendered":"\/forum\/forums\/topic\/3d-condensation-on-surface-of-louvered-fins-using-mixture-multiphase\/"},"modified":"2024-05-07T07:48:57","modified_gmt":"2024-05-07T07:48:57","slug":"3d-condensation-on-surface-of-louvered-fins-using-mixture-multiphase","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/3d-condensation-on-surface-of-louvered-fins-using-mixture-multiphase\/","title":{"rendered":"3D condensation on surface of louvered fins using Mixture multiphase"},"content":{"rendered":"

Hello, for my bachelor these I’m trying to simulate condensation on the surface (phase change from water liquid to water vapor), but after running a calculation I getting an error “floating point<\/strong>“. My geometry is basically a cube with a void in the shape of fins. Firstly I have improved my mesh (min. orthogonal is 0.19, average is 0.76; max. skewness is 0.81, average is 0.24; max aspect ratio is 9.23, average is 1.86; min. element quality is 0.21 and average is 0.83), values are now okay, but it still doesn’t work, so there is some problem with physics, boundary conditions, or calculation setting. I’m attaching some figures to show them. I’m using a mixture multiphase with phase interaction evaporation – condensation from water to vapor<\/strong> cause everybody does it on YouTube :), when I’ve tried to set it from vapor to water I got the error “latent heat less than zero<\/strong>“. I have also turned on “Surface Tension Force Modeling” and “Surface Tension Coefficient”. The primary phase is water liquid and the secondary is water vapor. Boundary conditions. The inside walls (via Fig. problem 1-5 and wall-fluid) have a temperature of 255.15 K and the outside walls (via Fig. Walls) have a temperature of 277.15 K, all in phase mixture. Initialization setting with Fig., after i’m pathing phase vapor by volume fraction with fluid to value 1. <\/p>\n

So what can be the problem?\"\"<\/a><\/p>\n","protected":false},"template":"","class_list":["post-365767","topic","type-topic","status-closed","hentry","topic-tag-3d-anayls-s","topic-tag-condensation","topic-tag-condensation-evaporation-1","topic-tag-condensation-of-vapour-1","topic-tag-mixture","topic-tag-phase-change"],"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