Sinusoidal wavy channel mess formation

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mdfaizan444 posted this 2 weeks ago

How to mess this wavy channel. I am trying every thing but not able to get good meshing. Also i am using turbulent k-epsilon model in which y+ value required to capture the laminar sub layer. But how to feed y+ value in Ansys fluent, i tried with inflation option but error in mesh is coming. the second generated mesh i have taken from literature, i want to generate the same mesh.

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rwoolhou posted this 2 weeks ago

You probably need to insert a method (under meshing) for Sweep and set the top (planar) face as source. Then inflate the Sweep method (right click on the Sweep you just created). 

There are various y+ calculators around, so have a look. Depending on the flow you may also need to refine around the curves if separation occurs. 

raul.raghav posted this 2 weeks ago

 Attached is a workbench project file for your reference which shows how to achieve the mesh in the screenshot below:

Rahul

Attached Files

raul.raghav posted this 2 weeks ago

To capture the laminar sublayer, you need to have a y+ value of approximately 1. Refer to the following screenshot to measure the distance of the first node from the wall. You can play with your edge sizing to achieve the desired wall distance.

Rahul

Attached Files

mdfaizan444 posted this 2 weeks ago

hey, what is selection information box?. what does it means? i am getting this type of mesh.. it is not matching with nodes?

raul.raghav posted this 2 weeks ago

The Selection Information box provides you information regarding the object you select, like nodes, vertices, faces, bodies. You select two nodes and it would provide you information such as the coordinate locations of each point and then the distance between the two points.

Did you select the mesh node as the selection option?

 

Rahul

mdfaizan444 posted this 1 weeks ago

Now i think both i have selected surface body. but i have a doubt regarding mess which i have mentioned in circle. is it ok? as nodes are not matching i think? Will it effect the solution?

raul.raghav posted this 6 days ago

I am not really sure what those points on your mesh are. You mesh looks conformal and doesn't seem to have any inconsistencies. Which version of Ansys are you using?

Rahul

mdfaizan444 posted this 5 days ago

I am using ANSYS 19.2 academic version.

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