Problems with Simulation

FluentStarter · April 16, 2014, 05:08

Hey Guys,

im really new to CFD-Simulation. Though i dont have acces to the Ansys Customer Portal i just started trying some things...
Right now I´m doing a 2d-Simulation of a compression in a chamber.

RCM.jpg

I use Ansys Workbench 14.5 and designed the half of the geometry(axissymetric) and the mesh with Ansys.I seperated the geomatry in 5 surfaces and connected them with interfaces. I used quadrilateral meshing with a higher density near the interfaces. Mesh Check was positive.

In the setup I used Dynamic Meshing,In-Cylinder-Motion and Layering as Mesh-Method.

When I start the the calculation i get following message:

Error: replace_c_in_f_layering: cell of wrong type or NULL cell detected at layering zone.

Now I have a few questions:

How can i fix this proplem?

When i check my Zone Motioten...is it normal that I can only see the top surface that is not deformed?

How can i get acces to the data of the Ansys Customer Portal to do some Tutorials?

If I use the Mesh-Motion function i get the message: Note: zone-surface: cannot create surface from sliding interface zone. Creating empty surface.
Is this a big problem?

If you have some tips for me I would like to hear them.
Thanks Guys

FluentStarter · April 16, 2014, 09:21

Tried to use different Meshes, but im getting the same message as before...
any ideas what could be the problem?

FluentStarter · April 17, 2014, 10:11

My simulation seems to work now, but during the calculation i get another error...

Error writing "| gzip -2cfv > C:\Users\xxxx\xxxx\xxx\xxx\dp0\FFF\Fluent\FFF.1-1-01200.cas.gz".

Anyone knows what this is?

April 16, 2014, 05:08	Problems with Simulation	#1
FluentStarter Member Join Date: Apr 2014 Location: N/A Posts: 50 Rep Power: 12	Hey Guys, im really new to CFD-Simulation. Though i dont have acces to the Ansys Customer Portal i just started trying some things... Right now I´m doing a 2d-Simulation of a compression in a chamber. RCM.jpg I use Ansys Workbench 14.5 and designed the half of the geometry(axissymetric) and the mesh with Ansys.I seperated the geomatry in 5 surfaces and connected them with interfaces. I used quadrilateral meshing with a higher density near the interfaces. Mesh Check was positive. In the setup I used Dynamic Meshing,In-Cylinder-Motion and Layering as Mesh-Method. When I start the the calculation i get following message: Error: replace_c_in_f_layering: cell of wrong type or NULL cell detected at layering zone. Now I have a few questions: How can i fix this proplem? When i check my Zone Motioten...is it normal that I can only see the top surface that is not deformed? How can i get acces to the data of the Ansys Customer Portal to do some Tutorials? If I use the Mesh-Motion function i get the message: Note: zone-surface: cannot create surface from sliding interface zone. Creating empty surface. Is this a big problem? If you have some tips for me I would like to hear them. Thanks Guys

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April 16, 2014, 09:21		#2
FluentStarter Member Join Date: Apr 2014 Location: N/A Posts: 50 Rep Power: 12	Tried to use different Meshes, but im getting the same message as before... any ideas what could be the problem?

April 17, 2014, 10:11		#3
FluentStarter Member Join Date: Apr 2014 Location: N/A Posts: 50 Rep Power: 12	My simulation seems to work now, but during the calculation i get another error... Error writing "\| gzip -2cfv > C:\Users\xxxx\xxxx\xxx\xxx\dp0\FFF\Fluent\FFF.1-1-01200.cas.gz". Anyone knows what this is?