I try simulate natural convection in heat sink. For it I created project using heat and flow equtions in Elmer. The project consists of heat sink, transistors and air cube - picture is below. Heat equations is deleted for to debug flow equation. But Elmer prints warnings many times: "WARNING:: ListFind: Requested property: [Viscosity], not found" and solve is not converged. If I remove all solids then all works correctrly. How I understood, elements of solid is used in flow equation and matrix become unconditional. How can I do that Elmer doesn't take into account elements of solid in flow equation? Whether it is possible?
Code: Select all
OS: Linux Mint 20.3 (X-Cinnamon/cinnamon)
Word size of FreeCAD: 64-bit
Version: 0.20.
Build type: Release
Branch: unknown
Hash: cd53c06b9899b03fe88d2a2fe8258422e7ac9c09
Python 3.8.10, Qt 5.12.8, Coin 4.0.0, OCC 7.5.2
Locale: Russian/Russia (ru_RU)