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initial condition of kappai at IATE diameter model |
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#1 |
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saidc
Join Date: Feb 2020
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Hi,
When IATE diameter model is used for gas phase on phaseProperties, it calls kappai dictionary for boundary and initial condition. So if I use this model I've to modifie kappai.gas dictionary. There is a description on IATE.H file for kappai and it says: Code:
"Interfacial curvature (alpha*interfacial area)" Unit is m^-1 Code:
// Construct the interfacial curvature equation fvScalarMatrix kappaiEqn ( fvm::ddt(kappai_) + fvm::div(phase_.phi(), kappai_) - fvm::Sp(fvc::div(phase_.phi()), kappai_) == - fvm::SuSp(R, kappai_) //+ Rph() // Omit the nucleation/condensation term + fvOptions(kappai_) ); How they obtain these numbers? I couldn't reached to the original paper that referred on source code (Ishii, M., Kim, S. and Kelly, J., (2005)). Maybe in the paper there is an explanation. But I found some others that might be related to Ishii et al. (2005). Code:
Ishii, M., Kim, S., & Uhle, J. (2002). Interfacial area transport equation: model development and benchmark experiments. International Journal of Heat and Mass Transfer, 45(15), 3111-3123. https://doi.org/10.1016/S0017-9310(02)00041-8. -------------------------------------------------------- Kocamustafaogullari, G., & Ishii, M. (1995). Foundation of the interfacial area transport equation and its closure relations. International Journal of Heat and Mass Transfer, 38(3), 481-493. https://doi.org/10.1016/0017-9310(94)00183-V. Best regards, Saidc. |
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#2 |
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Raphael Santos
Join Date: Oct 2013
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Hi Saidc,
have you find any reference about what is "kappai" and best way to set the values? Regards, Raphael |
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#3 |
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saidc
Join Date: Feb 2020
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Tags |
iate, kappai, phaseproperties |
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