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Seal failure in two-stroke engine

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Old   October 25, 2021, 03:39
Default Seal failure in two-stroke engine
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sehyun Oh
Join Date: Sep 2021
Location: South Korea
Posts: 6
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Hello, community users.

I'm trying to interpret the two-stroke engine as CONVERGE now.

But I have a problem setting up the case, so I want to get help from you guys.

I've got all the case setups done, but it seems the sealing is causing problems.

I'll let you know what the error is

FATAL_ERROR: The entire geometry has been removed due to sealing, please check the configuration of the seals in the case setup for errors.

This error message is being output.

I'll capture the sealing and setup details I made and post them up. I would really appreciate it if you could check it out and help.

Do I need to set it in Alignment before setting the seal in Configuration? I didn't.

Because the shape of the transfer port and exhaust port changes when performing alignment, and too many errors occur in diagnosis.

Nevertheless, if I have to do it, I'd love to know how to do it the right way.

If you tell me the order of sealing, I will try hard to make it again.

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Old   October 27, 2021, 09:58
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Yu Zhang
Join Date: Oct 2021
Location: Madison
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We have training material about the sealing available. In the training material, we use the two-stroke engine as an example and list the steps of setting up the sealing, so can you check the training material first to see if it helps? You can download the training material from, it is under "CONVERGE 3.0 -> Training material".

Besides, some surface preparations are necessary for setting up the sealing, for example, re-generating the linear and the piston skirt so that the number of vertices is the same, proper projection of the ports into the newly generated linear (using "alignment" tab in this step), etc. It is a little hard to tell where went wrong from the figures you uploaded here.

If you still have questions after reviewing the training material, please contact your local CONVERGE support team so we can better assist you.

Thank you.
Yu Zhang, Ph.D.
Research Engineer - Applications
Convergent Science Inc.
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Old   January 9, 2022, 03:20
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Rafael Antonio Meņaca Cabrera
Join Date: Jul 2020
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Dear o_cean,

were you able to solve the problem? If yes, can I contact you via email? I am trying to solve similar issues and following the CONVERGE manuals I haven't achieved it. Regards.
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cfd, converge, engine, seal, sealing

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