I’m solving for transient heat conduction, and I’ve already defined the boundaries in the previous step, i.e., thermal convection and radiation, so do I still need to represent these in a weak form?

# Assigning BC class BoundaryCondition(): def __init__(self, type, marker, values,dt=None): self._type = type if type == "Dirichlet": u_D = Function(V) u_D.interpolate(values) facets = facet_tag.find(marker) dofs = locate_dofs_topol…

# weak a_form = (rho_fem * cp_fem / dt * inner(u, v) * dx + k_fem * inner(grad(u), grad(v)) * dx + h_conv_air * inner(u, v) * ds_surface + epsilon * sigma * (4 * u_n ** 3 * u) * v * ds_surface + h_conv_table * in…

These problems have been bothering me for weeks, causing me to get my temperature values wrong all the time, and I wonder if conditions such as boundaries need to be reflected in weak equations.

Thermal conduction boundary problems

General

francesco-ballarin November 29, 2024, 6:21pm 5

It’s unlikely anyone will be able to help unless you read and understand Read before posting: How do I get my question answered? . Closing.

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Thermal conduction boundary problems

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