Shell sections are applied to surfaces, which—from a geometric standpoint—have no thickness; a thickness is assigned to the surface geometry as part of the shell section definition. During the simulation the shell faces are considered to be located half the thickness distance above and below the surface geometry. Shell Sections in Fluid SimulationsIf your fluid simulation has no thermal factors, shell sections behave like wall boundaries. For CHT simulations, shell sections act as regular CHT interfaces supplemented with a linear temperature profile. To compute the heat flux in the direction normal to the shell, the app solves the energy equation along the shell surface to obtain the temperature distribution associated with the normal heat flux. You can apply a material to the shell that has isotropic and anisotropic properties. Thermal shells are subject to the following limitations in CHT simulations:
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