Problem with non-positive volume

Aizaz Yasim · March 13, 2016, 09:33

Hi everybody,

I am currently working on my final year project and designing and simulating compression ignition engine. I have done the geometry work of piston bowl. The problem i am facing is that when I am done with the pre-mesh and write the output to be exported into the Fluent Solver, then after I check the mesh in Fluent, i get the Mesh Check Failed error. I am attaching the ICEM CFD file upto pre-mesh. Kindly look into it and tell me if there is anything wrong while exporting it to Fluent so that I don't get any non-positive volumes or mesh check errors. It will be of great help

Thankyou

Aizaz Yasim · March 13, 2016, 09:35

I am new to this forum so I apologize for any mistake I may have made regarding rules

Aizaz Yasim · March 13, 2016, 09:40

This is current state of mesh.

Far · March 13, 2016, 10:23

check elements with zero or negative quality

sufjanst · March 22, 2016, 10:23

Acticate "Penetrating Elements" in the Check Mesh Panel in ICEM. It is disabled by default. Penetrating elements can cause non-positive-volumes.

Aizaz Yasim · March 30, 2016, 15:38

How do i check zero or negative qualty?

`e` · March 30, 2016, 19:04

Quote:

Originally Posted by Aizaz Yasim

How do i check zero or negative qualty?

Mesh > Check and Mesh > Info > Quality.

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March 13, 2016, 09:35		#2
Aizaz Yasim New Member Aizaz Join Date: Mar 2016 Posts: 4 Rep Power: 10	I am new to this forum so I apologize for any mistake I may have made regarding rules

March 13, 2016, 10:23		#4
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	check elements with zero or negative quality

March 22, 2016, 10:23		#5
sufjanst Member Join Date: Mar 2016 Posts: 73 Rep Power: 10	Acticate "Penetrating Elements" in the Check Mesh Panel in ICEM. It is disabled by default. Penetrating elements can cause non-positive-volumes.

March 30, 2016, 15:38		#6
Aizaz Yasim New Member Aizaz Join Date: Mar 2016 Posts: 4 Rep Power: 10	How do i check zero or negative qualty?