From 0ebd4e0962da76ce02306a2fcd4aea93122e6bda Mon Sep 17 00:00:00 2001 From: Thomas Lichtenegger Date: Thu, 27 Apr 2023 13:51:39 +0200 Subject: [PATCH] Added clarifying comment regarding the definition of effective thermal conductivities due to contacts and to radiation. --- .../heatTransferInterGrain/heatTransferInterGrain.C | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/lagrangian/cfdemParticle/subModels/energyModel/heatTransferInterGrain/heatTransferInterGrain.C b/src/lagrangian/cfdemParticle/subModels/energyModel/heatTransferInterGrain/heatTransferInterGrain.C index e04b2c28..92201e9f 100644 --- a/src/lagrangian/cfdemParticle/subModels/energyModel/heatTransferInterGrain/heatTransferInterGrain.C +++ b/src/lagrangian/cfdemParticle/subModels/energyModel/heatTransferInterGrain/heatTransferInterGrain.C @@ -295,6 +295,11 @@ void heatTransferInterGrain::calcEnergyContribution() void heatTransferInterGrain::calcPartEffThermCond() { + // clarification wrt to notation: Qian et al. define effective conductivities such that they fit into the + // form \alpha_p * k * \nabla T_p, hence the multiplication with volFrac below. + // Carson et al. define total bed conductivities which would not have an \alpha_p factor in the heat flux + // term, therefore there is no such multiplication below. + // To write down both contributions in one equation, one has to redefine the conductivity of Carson et al. calcPartThermCond(); if (radiativeHeatTransfer_) calcPartThermRad();