[CFDer_1]

Hello Converge community,

as I found here on the forum and from Converge-manual, a new cylinder must be crated in Converge studio to get the appropriate triangulation accuracy. So in case of two stroke engine, after creating the new cylinder, how can I create hollows on it's surface for the ports as they are on the original cylinder? I tried to use the projection command but it created just the rim (edge) of the port and didn't offer a possibility to hollow it.

If any one have an advice, I would be thankful

Thanks in advance.

[shuqiz]

Originally Posted by CFDer_1

Hello Converge community,

as I found here on the forum and from Converge-manual, a new cylinder must be crated in Converge studio to get the appropriate triangulation accuracy. So in case of two stroke engine, after creating the new cylinder, how can I create hollows on it's surface for the ports as they are on the original cylinder? I tried to use the projection command but it created just the rim (edge) of the port and didn't offer a possibility to hollow it.

If any one have an advice, I would be thankful

Thanks in advance.

Hi,

Boolean operations should be helpful for this. By uniting both the cylinder you created and the port geometry imported, Converge Studio should remove the intersections and connect the two parts.

[CFDer_1]

Hello Shuqi,

thank you very much for your reply. I tried it and it works fine.

Are there any recommendations about the number of vertices per diameter when creating the new cylinder? I had a look on the example of the two stroke engine and the diameter of the cylinder has 420 edges, so is this an average number or what is the regulations here?

Best Regard

[shuqiz]

Originally Posted by CFDer_1

Hello Shuqi,

thank you very much for your reply. I tried it and it works fine.

Are there any recommendations about the number of vertices per diameter when creating the new cylinder? I had a look on the example of the two stroke engine and the diameter of the cylinder has 420 edges, so is this an average number or what is the regulations here?

Best Regard

Hi David,

You're very welcome! I'm glad to hear that it worked for you.

For the number of vertices, it's the trade off between the accuracy of the geometry and the time for doing surface modifications (for example the boolean operations) as well as the surface file size. This number can be quite different depending on cases, but the example cases are always a good reference to start with. Another possible approach is to base the number of vertices on your imported geometry connected to the cylinder, such as the head.

Best,

[CFDer_1]

Hello Shuqi,

thank you very much for your reply.
I will consider the number of vertices as it is in the example and let see how it goes.

Best Regards,