{"id":161729,"date":"2023-01-25T07:16:47","date_gmt":"2023-01-25T07:16:47","guid":{"rendered":"\/knowledge\/forums\/topic\/is-there-a-best-practice-for-the-spatial-discretization-gradient-options-in-fluent\/"},"modified":"2023-07-31T12:35:47","modified_gmt":"2023-07-31T12:35:47","slug":"is-there-a-best-practice-for-the-spatial-discretization-gradient-options-in-fluent","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/is-there-a-best-practice-for-the-spatial-discretization-gradient-options-in-fluent\/","title":{"rendered":"Is there a best practice for the spatial discretization gradient options in Fluent?"},"content":{"rendered":"<p>The gradient of the solution variables are required in order to evaluate diffusive fluxes, velocity derivatives, and for higher-order discretization schemes by the solver.   The gradients of solution variables at cell centers can be determined using three approaches: \u2013Green-Gauss Cell-Based \u2013 Good, but solution may have false diffusion (smearing of the solution fields) \u2013Green-Gauss Node-Based \u2013 More accurate; minimizes false diffusion; (strongly recommended for tri\/tet and hybrid meshes) \u2013Least-Squares Cell-Based \u2013 The default method. Less expensive to compute than Node-Based gradients. Slightly more expensive than Cell-Based gradients. However, exactly reconstruct linear field on highly skewed or distorted meshes. (appropriate for any kind of meshes)<\/p>\n","protected":false},"template":"","class_list":["post-161729","topic","type-topic","status-publish","hentry","topic-tag-4424","topic-tag-fluent","topic-tag-fluid-dynamics","topic-tag-general"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_forum_id":["27796"],"_bbp_author_ip":["23.56.168.180"],"_bbp_last_active_time":["1-24-2023  20:20:14"],"_btv_view_count":["3538"],"siebel_km_number":["1000046"],"product_version":["16"],"km_published_date":["2009-05-06T00:39:27.000Z"],"family":["Fluid Dynamics"],"application_name":["FLUENT"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161729\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=161729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}