Active Separation Control Using an Oscillatory Profile at Low-Re
Chandra M. Yadajaru, Dept. of Mechanical Engineering, University of Kentucky
chandramouli@uky.edu
Shih-Che Huang, Dept. of Mechanical Engineering, University of Kentucky
Raymond P. LeBeau, Jr., Dept. of Mechanical Engineering, University of
Kentucky
Linux clusters provide the cost-effective platform for many applications of parallel computational fluid dynamics. As the project size of these applications increases, Input/Output (I/O) operations of the CFD solver applied to such clusters occupy a larger percentage of the overall computation time. Where parallel storage is available, some design modifications to the code can accelerate its I/O performance. The present work examines one method of obtaining faster I/O with the implementation of a Parallel Virtual File System (PVFS). This I/O system is based on the CFD General Notation System (CGNS), which is a portable standard for recording and recovering CFD data. The combined system is based on HDF5 (Hierarchical Data Format 5), and still requires some specific modifications to smoothly integrate with CGNS and PVFS. The CFD solver used for this work is GHOST, a structured 2-D code. This implementation is modeled after the recently successful implementation of a similar system at Utah State University (AIAA-2005-1381).