Modeling of in-cylinder flow using overset mesh

Overset mesh has gained popularity in modeling applications with complicated geometries due to its flexibility in handling arbitrary motion. This paper presents a study on application of overset mesh for in-cylinder flow using STAR-CCM+®. Different mesh strategies were investigated including trim, poly, and direct mesh. It was found that the results are similar from different mesh while ploy mesh overall produces more robust results than trim mesh.

The results were also compared against those from STAR-CD®. It was found that overset mesh results in general agree with those from STAR-CD for major flow structure like swirl and tumble, however, they differ significantly in remaining flow structure at end of compression. The difference can be traced back to the significant difference in turbulence between STAR-CD and STAR-CCM+.

Presenter(s): 
General Motors Holding, LLC
Yangbing Zeng
Session Time Slot(s): 
Time: 
06/03/2017 - 3:15pm-06/03/2017 - 3:40pm
Room: 
Room III
Presentation Image: 
Session Track: 

Session Tracks (STAR Global Conference 2017)

Co-Author(s): 
First Name: 
Minghua
Last Name: 
Yang
Company / Institution: 
GM