{"id":167829,"date":"2023-04-13T07:33:14","date_gmt":"2023-04-13T07:33:14","guid":{"rendered":"\/knowledge\/forums\/topic\/what-does-this-warning-mean-warning-gradient-scheme-is-used-that-is-not-consistent-with-adjoint-calculation-least-squares-cell-based\/"},"modified":"2023-07-31T12:28:42","modified_gmt":"2023-07-31T12:28:42","slug":"what-does-this-warning-mean-warning-gradient-scheme-is-used-that-is-not-consistent-with-adjoint-calculation-least-squares-cell-based","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-does-this-warning-mean-warning-gradient-scheme-is-used-that-is-not-consistent-with-adjoint-calculation-least-squares-cell-based\/","title":{"rendered":"What does this warning mean? Warning: Gradient scheme is used that is not consistent with adjoint calculation: Least Squares Cell Based"},"content":{"rendered":"

This is saying that the gradient discretization scheme in Fluent is different from what is used in the adjoint solver (Green-Gauss Cell based). Therefore the sensitivity calculated by adjoint solver may not be accurate. However the inaccuracy due to this is normally small compared to others, e.g. Frozen turbulence assumption in the current adjoint solver, nonlinearity due to large morphing. Therefore it is safe to continue the calculation.<\/p>\n

Attachments:
\n1. 2055725.pdf<\/a><\/p>\n","protected":false},"template":"","class_list":["post-167829","topic","type-topic","status-publish","hentry","topic-tag-19-1","topic-tag-adjoint-solvers","topic-tag-fluent","topic-tag-fluent-flow-optimization","topic-tag-fluid-dynamics"],"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