Moving Mesh Course Description

Course Duration: 1 Day
Course Schedule: To suit users requirements

Who Should Attend

It is recommended that users who need to incorporate mesh motion into their simulations, and who have limited or no experience in using it, should attend this course

Course Aims

The course is aimed at giving the User an understanding of how to set up a model involving a moving mesh. This includes both sliding meshes and meshes with cell addition and deletion. Hands-on experience in setting-up, running and post-processing is gained by the use of worked examples.The course also offers the User the opportunity to discuss the application of moving meshes to their case with an experienced Engineer.

Course Structure

The course structure is designed to take the User through the various stages of setting up a model involving moving mesh models and to use worked examples to demonstrate these techniques.

Course Content

The content of the course, based on the above aims and structure, is as follows;

1) Introduction and Nomenclature : This section introduces the various types of moving mesh that can be used in STAR-CD. It then discusses the two aspects of mesh motion, namely changes in geometry and topology. It introduces the concept of using "events" to specify such changes and how they affect the overall geometric shape or the cell connectivity.

2) Spinning Blades Example - Rotating Case : This section demonstrates a simple worked example of mesh rotation that involves many of the standard practices found in such a case. It introduces and discusses the steps necessary to set up such a case in pro-STAR and to construct the change grid and other files which link pro-STAR and STAR during the calculation process. The case is then run and the transient results post-processed. This example also demonstrates the flexible use of pro-STAR command scripts that allow the modification of physical parameters, such as rotational speed, in a more user friendly manner.

3) Air Pump Example - Reciprocating Motion Case : This section demonstrates a simple case of mesh motion with cell addition and deletion using a two stroke air pump as the worked example. Two ports are connected to the cylinder with simulated opening and closing of "valves". This example introduces an alternative means of controlling mesh motion, which is based on piston position in the cylinder, and discusses the methodology of cell addition and deletion, showing the pro-STAR commands that are used to achieve this. The case is then run and the transient results post-processed.

Course Requirements

The User should have a good working knowledge of pro-STAR and STAR.