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VACUUM ›› 2023, Vol. 60 ›› Issue (5): 70-74.doi: 10.13385/j.cnki.vacuum.2023.05.11

• Vacuum Acquisition System • Previous Articles     Next Articles

Simulation for Multi-scale Flows of Complex Model Based on Discrete Ordinates Method

WANG Jun-wei1, WANG Kui-bo2, HU Kai-nan3, BAI Bing1   

  1. 1. Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China;
    2. Institute of Microelectronics of the Chinese Academy of Sciences, Beijing 100094, China;
    3. School of Civil and Architectural Engineering, East China University of Technology, Nanchang 330105, China
  • Received:2022-11-09 Online:2023-09-25 Published:2023-09-26

Abstract: Multi-scale flows are not only used in hypersonic vehicles,orbit change/attitude adjustment of spacecraft and other aerospace fields, but also the scientific and engineering practices such as the mass transfer/heat transfer in micro/nano manufacturing and device. Accurate and rapid simulation of multi-scale flows is of great significance to this kind of scientific research and engineering practice. The discrete ordinates method based on unified gas kinetic scheme is introduced to study the field simulation of multi-scale flows, and the internal flow field simulation of a dynamic gas lock model is completed. The temperature field, velocity field and density field of the model are obtained, and the results are in line with theoretical expectations.

Key words: multi-scale flow, vacuum, unified gas kinetic scheme, discrete ordinates method, dynamic gas lock

CLC Number:  TB71+1

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