need help with the minimum orthogonal quality value and maximum aspect ratio

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  • Last Post 01 November 2018
kalyan posted this 31 October 2018

I'm using the ansys 19.1 academic version and i am getting a value for min orthogonal quality as 0.02 and aspect ratio as 25.01 when I tried to do the analysis.

I need to know what are the best values possible and attainable for the model in the attachment (i.e. the geometry) and also the way to improve the value of min orthogonal quality if required. 

Please do help!!!

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nmpatre posted this 31 October 2018

Hello kalyan,

Can you upload a few snapshots of the mesh that you generated? It will help us to provide better suggestions.

kalyan posted this 31 October 2018

Thank you Mr. NMPatre for your response.

please find the snapshots below

front view

isometric view

rwoolhou posted this 31 October 2018

I suspect you're growing the mesh too quickly or don't have enough cells around the object in the middle.  Check your minimum cell sizes and growth rate. Also please confirm you've got the meshing tool set to CFD. 

kalyan posted this 31 October 2018

Sir could you please elaborate as you said "Also please confirm you've got the meshing tool set to CFD. " Sir im a beginner so please do elaborate it. Thank you Regards, Kalyan

kkanade posted this 01 November 2018

Hello, 

Please have a look at following video. 

Please try to get min orthogonal quality to 0.1 for fluids simulation. 

Regards,

Keyur

kalyan posted this 01 November 2018

sir,

Is 0.1 a good value for the min orthogonal quality?

rwoolhou posted this 01 November 2018

It's acceptable, ideally it wants to be higher.  Have you gone through the tutorials that come with the R19 documentation and that are posted elsewhere on the community? 

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