ddt (rho U) + div (rho U U) – laplacian (mu U) = – grad (p)
The PISO (Pressure Implicit with Splitting of Operators) is an efficient method to solve the Navier-Stokes equations in unsteady problems. The main differences from the SIMPLE algorithm are the following[1]: No under-relaxation is applied. The momentum corrector step is performed Continue reading pisoFOAM
Now, let’s look at how the simpleFOAM works. the simpleFOAM.C file: #include “fvCFD.H” #include “singlePhaseTransportModel.H” // transport model with viscosity model #include “RASModel.H” // turbulent model // * * * * * * * * * * * * * Continue reading simpleFOAM
[1] MacCormack R W. A perspective on a quarter century of CFD research.AIAA-93-3291-CP,1993 [2] Roache P J, Chia K, White F. Editorial policy statement on the control of numerical accuracy.Journal of Fluids Engineering,1986,108(1):2 [3] AIAA. Editorial policy statement on numerical Continue reading A list of reference paper of verification and validation in CFD
I have upgraded my Fedora 13 to F14 once the Fedora 14 was available. But Salome 5.1.4 did not work on my new system. It always crashed when it starts: Searching /Kernel/Session in Naming Service +++++++++++++++++++++++Traceback (most recent call last): Continue reading Salome 5.1.5 on Fedora 14 (x86_64)
After a fresh installation of Fedora, you may want to add some more features which would help you work or enjoy media and movies. At first, you should install rpmfusion-free and rpmfusion-nonfree respositories, and enable them. 1. Install MPlayer and Continue reading Some Tips on Installation of Fedora x86_64
Generally, incompressible viscous turbulent heat transfer energy equation is [latex]\dfrac{\partial T}{\partial t} + \nabla\cdot(\boldsymbol{U} T) = \alpha \nabla^2 T + \dfrac{\nu}{c_\mathrm{p}} [\nabla \boldsymbol{U} +(\nabla \boldsymbol{U})^\mathrm{T}]:\nabla \boldsymbol{U} [/latex] ddt(T) + div(U T) = alpha laplacian(T) + ((nu/cp (grad(U) + (grad(U)).T)) && Continue reading Incompressible Viscous Turbulent Heat Transfer Energy Equation