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Showing results 1 to 7 of 7 Search took 0.00 seconds. Search: Posts Made By: madhukar_m_rao

Forum: Main CFD Forum May 4, 2012, 01:04

Replies: 23 Timestep and Pressure Correction Relationship in SIMPLE Views: 4,244 Posted By madhukar_m_rao If your Mach number is very low and pressure... If your Mach number is very low and pressure changes are small you could probably just neglect the density corrections and set the temperature to a constant and suppress solving the energy...

Forum: Main CFD Forum May 3, 2012, 05:23

Replies: 23 Timestep and Pressure Correction Relationship in SIMPLE Views: 4,244 Posted By madhukar_m_rao Enforcing SUM( void_fractions ) = 1 is good. ... Enforcing SUM( void_fractions ) = 1 is good. You may want to try under-relaxing the density and see if that helps to stabilize your iterations. Best regards, Madhukar Rao

Forum: Main CFD Forum May 1, 2012, 00:50

Replies: 23 Timestep and Pressure Correction Relationship in SIMPLE Views: 4,244 Posted By madhukar_m_rao [1] I think you will need the compressible... [1] I think you will need the compressible pressure correction equation. [2] You can also try under relaxation for density (in addition to the pressure). [3] Do your initial conditions...

Forum: Main CFD Forum April 30, 2012, 02:08

Replies: 23 Timestep and Pressure Correction Relationship in SIMPLE Views: 4,244 Posted By madhukar_m_rao Yes, that is correct. I expect that you have the... Yes, that is correct. I expect that you have the corresponding terms for the momentum and energy equations also. In addition, your mass fluxes will depend on the density correction as well as...

Forum: Main CFD Forum April 27, 2012, 00:57

Replies: 23 Timestep and Pressure Correction Relationship in SIMPLE Views: 4,244 Posted By madhukar_m_rao You may want to try implementing the... You may want to try implementing the compressibility modifications to the pressure-correction as described in chapter 10 of the book by Ferziger and Peric.

Forum: Main CFD Forum April 26, 2012, 01:25

Replies: 23 Timestep and Pressure Correction Relationship in SIMPLE Views: 4,244 Posted By madhukar_m_rao Since you seem to have a compressible flow, are... Since you seem to have a compressible flow, are you including the terms due to the density correction in the pressure correction equation (See the description of the compressible SIMPLE algorithm in...

Forum: Main CFD Forum April 25, 2012, 05:06

Replies: 23 Timestep and Pressure Correction Relationship in SIMPLE Views: 4,244 Posted By madhukar_m_rao It is also a good idea to have mass conserving... It is also a good idea to have mass conserving initial and boundary conditions for unsteady simulations of low Mach number or incompressible flows.

Showing results 1 to 7 of 7

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