High speed compressor aerodynamic simulations
Title: High speed compressor aerodynamic simulations
SNIC Project: SNIC 2020/7-30
Project Type: SNIC Small Compute
Principal Investigator: Tomas Grönstedt <tomas.gronstedt@chalmers.se>
Affiliation: Chalmers tekniska högskola
Duration: 2020-05-01 – 2021-05-01
Classification: 20302
Keywords:

Abstract

The project "High Speed Compressor Aerodynamic Simulations” is the part of effort of the project High Speed Axial Compressor Design currently running at the Division of Fluid Dynamics/Department of Mechanics and Maritime Sciences/Chalmers University of Technology. The project is focused on detailed simulations of high-speed compressor flows and its blade optimization. In the High-Speed Axial Compressor Design project, Computational Fluid Dynamics (CFD) methods are used for the simulation of flows for academical and engineering applications with the aim to acquire a better understanding the physical principles of the flow inside axial compressors, and consequently optimize their performance. For this purpose, all simulations are done using the ANSYS CFX software. The main objective of the High-Speed Axial Compressor Design project is to develop a procedure for axial compressor optimization. The methodology for optimizing the shape of blades for high speed compressors considers, for instance, deviations obtained as a result of the flow conditions. This means that at each design optimization step, the compressor blades will be closer to the optimal performance in terms of efficiency and aerodynamic stability. In each design loop, the optimization algorithm processes input from previous CFD simulations, by means of a meta model. Even though each of these simulations could be done on a standard workstation, the amount of simulations needed in each of the optimization loops means that access to HPC resources is a necessity in order to complete the optimization loops within a reasonable time frame. Each simulation may have grids with sizes in the order of 10 million cells implying a high computational effort. Moreover, the final designs are evaluated using more detailed CFD simulations for which HPC resources are needed. Based on the need and the current level of usage, allocation of a SNIC-Small project is justified. Regarding Webpage: Chalmers has received a SAAB financed project to work with ITA Univ. and IAE institute Brazil. You can get the contract upon request from the applicant. It is not on a webpage.