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Motion Analysis

Posted 6 juil. 2011, 02:36 UTC−4 Fluid & Heat, Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD), Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.1 3 Replies

Vinodh Ravi
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Hi All,

Im new to using comsol and not sure of its full capabilities....I m working on a project, where I use a resiprocating compressor model (Creo/E). The analysis I want to conduct is to find the pressure and temp difference within the piston cylinder at diferent stages of the piston motion at constant speed. once this is completed I want to change the speed of the piston using diferent mechanism and then find the same and then compare results.

Is this analysis during motion even possible with comsol ?

Thanx in advance
3 Replies Last Post 6 juil. 2011, 03:00 UTC−4
Yoann Many
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Posted: 1 decade ago 6 juil. 2011, 02:46 UTC−4
there is a physics named "moving mesh (ale)" under mathematics, but I don't think you can get a complex motion path with it. If you have to study the piston only with just a vertical motion it would be alright though.
there is a physics named "moving mesh (ale)" under mathematics, but I don't think you can get a complex motion path with it. If you have to study the piston only with just a vertical motion it would be alright though.
Vinodh Ravi
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Posted: 1 decade ago 6 juil. 2011, 02:56 UTC−4
Thank Yoann, Its not only the piston but also the fluid in the cylinder (air properties) that Im interested in collecting.
Thank Yoann, Its not only the piston but also the fluid in the cylinder (air properties) that Im interested in collecting.
Yoann Many
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Posted: 1 decade ago 6 juil. 2011, 03:00 UTC−4
yes I got it but you just got to draw a rectangle (or cylinder if in 3D) for the total space of your air, and you use the moving mesh physics only on your piston. Normally it would do.
yes I got it but you just got to draw a rectangle (or cylinder if in 3D) for the total space of your air, and you use the moving mesh physics only on your piston. Normally it would do.

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