{"id":198546,"date":"2026-05-11T15:37:43","date_gmt":"2026-05-11T15:37:43","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/knowledge\/?post_type=topic&p=198546"},"modified":"2026-06-26T19:51:56","modified_gmt":"2026-06-26T19:51:56","slug":"ansys-freeflow-faqs-and-tips","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/ansys-freeflow-faqs-and-tips\/","title":{"rendered":"Ansys FreeFlow FAQs and Tips"},"content":{"rendered":"

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FreeFlow FAQs & Tips<\/h2>\n

Welcome to Ansys FreeFlow FAQ and Tips Center<\/strong>.<\/em><\/p>\n

Navigate through contents below and find answers and tips\u00a0 from our team of experts to enhance your Ansys FreeFlow engineering simulations.\u00a0\u00a0<\/em><\/p>\n

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\/<\/span>FreeFlow SPH Adaptive Size<\/strong><\/h2>\n
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\nWhat is SPH Adaptive Size in Ansys FreeFlow?<\/strong><\/a><\/summary>\n

SPH Adaptive Size is a capability in Ansys FreeFlow that automatically adjusts the size (resolution) of SPH elements during a simulation… Read full FAQ<\/a><\/p>\n<\/details>\n

\nHow is SPH Adaptive Size different from standard SPH in Ansys FreeFlow?<\/strong><\/a><\/summary>\n

With SPH Adaptive Size, the element size can change locally during simulation, the resolution is higher only in selected regions or near boundaries… Read full FAQ<\/a><\/p>\n<\/details>\n

\nHow does SPH Adaptive Size work in Ansys FreeFlow?<\/strong><\/a><\/summary>\n

SPH Adaptive Size in Ansys FreeFlow works by refining and coarsening SPH elements in a controlled, hierarchical manner, improving accuracy only where needed while keeping overall computational cost low… Read full FAQ<\/a><\/p>\n<\/details>\n

\nWhat are the main benefits of using SPH Adaptive Size, and what types of applications benefit most from it?<\/strong><\/a><\/summary>\n

SPH Adaptive Size key benefits include, Improved accuracy in critical flow regions, Reduced computation time compared to uniform fine resolution… Read full FAQ<\/a><\/p>\n<\/details>\n

\nWhich solvers support SPH Adaptive Size?<\/strong><\/a><\/summary>\n

SPH Adaptive Size is supported with the following solvers, Implicit Incompressible SPH (IISPH) \u2014 Default and recommended solver… Read full FAQ<\/a><\/p>\n<\/details>\n

\nWhat is SPH Adaptive size coarsening, and how does it work in Ansys FreeFlow?<\/strong><\/a><\/summary>\n

Coarsening is the process of reducing SPH resolution when refined elements are no longer needed… Read full FAQ<\/a><\/p>\n<\/details>\n

\nWhat are the limitations of SPH Adaptive Size in Ansys FreeFlow?<\/strong><\/a><\/summary>\n

SPH Adaptive Size in Ansys FreeFlow has a few important limitations that users should consider when setting up simulations and analyzing results… Read full FAQ<\/a><\/p>\n<\/details>\n

\nWhat happens to SPH elements during SPH Adaptive refinement in Ansys FreeFlow?<\/strong><\/a><\/summary>\n

When an SPH element is refined: It is replaced by smaller elements according to the selected refinement level…Read full FAQ<\/a><\/p>\n<\/details>\n

\nHow do I define where refinement should occur with SPH Adaptive size in Ansys FreeFlow?
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Ansys FreeFlow provides three approaches for defining refinement regions…
\nRead full FAQ<\/a><\/p>\n<\/details>\n<\/div>\n","protected":false},"template":"","class_list":["post-198546","topic","type-topic","status-publish","hentry","topic-tag-faqs","topic-tag-freeflow-faqs","topic-tag-freeflow-sph","topic-tag-sph-faqs","filter-by-application-ansys-freeflow","filter-by-application-freeflow-faqs","filter-by-industry-sph","application-products-ansys-freeflow"],"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