{"id":320352,"date":"2023-11-30T18:44:10","date_gmt":"2023-11-30T18:44:10","guid":{"rendered":"\/forum\/forums\/reply\/320352\/"},"modified":"2023-11-30T18:48:36","modified_gmt":"2023-11-30T18:48:36","slug":"320352","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/320352\/","title":{"rendered":"Reply To: Why Negative Moment – Wind Turbine – & Residuals"},"content":{"rendered":"

<p> <\/p><p>Is that the only criteria, residual dropping below 1e-3, when looking at the residual picture above, that you are using to conclude it has not converged? <\/p><p>Moment:<\/p><p>I am not sure what I am doing — or what Fluent is doing — regarding summing the moment on the blades… does Fluent automatically do this with the way I have created the “turbine”? And for whatever it’s worth, I have not created blade faces that I am aware of… I simply created a named selection in Fluent Mesh called “Turbine” using the edges of the three airfoils (edges not faces). Then, when opening Fluent, in the 6DOF settings I set “Turbine” to rotate. Or are we talking about the same thing… edge, face… just depends if looking at it as 2D or 3D I suppose…<\/p><p>I have not checked for area\/vector definitions… havent heard of this before. <\/p><p>I am not sure how the speed is defined… in other words, I have not changed anything that I know of… I simply chose a constant wind speed of 8m\/s at the inlet of flow area…   <\/p><p> <\/p><\/p>\n","protected":false},"template":"","class_list":["post-320352","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