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chtValidationCases/validationCases/03_freeConvection/README.md

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3. Free Convection

Two parallel, laminar gas flows split by a stainless steel plate. Initially, hot gas (top) stream is at 1800 K, cold gas (bottom) is at 300 K, and plate is at 800 K.

To demonstrate verification of the conservation equations, the integrated heat fluxes at the two fluid-solid interfaces converge to equal and opposite at steady-state. For validation, we examine the heat flux at the point location x/L = 0.98 near the trailing edge of the plate. The numerical convective heat flux from the solver is compared with the the theoretical heat flux calculated by the following method.

  1. Laminar correlations are used to calculate the local heat transfer coefficient (HTC) based on film properties.
  2. The local heat flux is calculated as q = h(T_{\infty} - T_{wall}).