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Generalized forced convection model #526

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Generalized forced convection model #526

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@chipbarnaby chipbarnaby commented Jan 16, 2025

Description

Implementation of an optional scheme for determining the inside surface forced convection.

3 coeffs can be provided. Hc = C1 + C2*ACH^C3.

With appropriately selected coefficients, this form can replicate the EnergyPlus Fisher-Pedersen model.

In addition, an optional choice is available to specify how natural (buoyancy-driven) and forced convection coefficients are combined to yield the overall surface convection coefficient. Choices are --

  • Add. hc = hcNat + hcFrc (default, traditional CSE method)
  • Quadrature. hc = sqrt( hcNat^2 + hcFrc^2)
  • EnergyPlusLinearCombination. hc = hcNat when ACH<0.5; hc = hcFrc when ACH > 3; linear combination per ACH when 0.5< ACH < 3.

@chipbarnaby chipbarnaby marked this pull request as draft January 16, 2025 21:29
@chipbarnaby chipbarnaby requested a review from nealkruis January 16, 2025 21:29
@chipbarnaby chipbarnaby changed the title EnergyPlus convection model Generalized force convection model Jan 23, 2025
@chipbarnaby chipbarnaby changed the title Generalized force convection model Generalized forced convection model Jan 23, 2025
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