Large-Scale Simulation of Full Three-Dimensional Flow and Combustion of an Aero-Turbofan Engine on Sunway TaihuLight Supercomputer

Author:

Xu Quanyong1,Ren Hu2,Gu Hanfeng2,Wu Jie3,Wang Jingyuan3,Xie Zhifeng4ORCID,Yang Guangwen25

Affiliation:

1. Institute for Aero Engine, Tsinghua University, Beijing 100084, China

2. National Supercomputing Center in Wuxi, Wuxi 214072, China

3. Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China

4. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China

5. Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China

Abstract

Computational fluid dynamics- (CFD-) based component-level numerical simulation technology has been widely used in the design of aeroengines. However, due to the strong coupling effects between components, the numerical simulation of the whole engine considering the full three-dimensional flow and multi-component chemical reaction is still very difficult at present. Aimed at this problem, an efficient implicit solver, ‘sprayDyMFoam’ for an unstructured mesh, is developed in this paper based on the Sunway TaihuLight supercomputer. This sprayDyMFoam solver improves the PIMPLE algorithm in the solution of aerodynamic force and adjusts the existing droplet atomization model in the solution of the combustion process so as to meet the matching situation between components and the combustion chamber in the solution process. Meanwhile, the parallel communication mechanism of AMI boundary processing is optimized based on the hardware environment of the Sunway supercomputer. The sprayDyMFoam solver is used to simulate a typical double-rotor turbofan engine: the calculation capacity and efficiency meet the use requirements, and the obtained compressor performance can form a good match with the test. The research proposed in this paper has strong application value in high-confidence computing, complex phenomenon capturing, and time and cost reduction for aeroengine development.

Funder

National Science and Technology Major Project of China

Publisher

MDPI AG

Subject

General Physics and Astronomy

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