viscous resistance and inertial resistance of porous media

Weiqiang Liu · June 6, 2020, 13:03

Hi all,

I am doing a porous media combustion with fluent. When setting resistance coefficients of porous media, I need to set viscous resistance and inertial resistance.

I often set viscous coefficient and ignore inertial coefficient. I am wondering in what situations I can ignore inertial resistance and in what situations I can not.

Best regards

Weiqiang

vinerm · June 15, 2020, 07:26

Carry out an order of magnitude analysis for both terms. For most of the cases, particularly with velocity being greater than 1, inertial loss is more significant than viscous loss.

June 6, 2020, 13:03	viscous resistance and inertial resistance of porous media	#1
Weiqiang Liu Senior Member Weiqiang Liu Join Date: Feb 2018 Posts: 278 Rep Power: 9	Hi all, I am doing a porous media combustion with fluent. When setting resistance coefficients of porous media, I need to set viscous resistance and inertial resistance. I often set viscous coefficient and ignore inertial coefficient. I am wondering in what situations I can ignore inertial resistance and in what situations I can not. Best regards Weiqiang

June 15, 2020, 07:26	Resistance Coefficients	#2
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 36	Carry out an order of magnitude analysis for both terms. For most of the cases, particularly with velocity being greater than 1, inertial loss is more significant than viscous loss. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

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