Effect of delta wing on the particle flow in a novel gas supersonic separator

Chuang Wen, Yan Yang, Jens Honore Walther, Kar Mun Pang, Yuqing Feng

Research output: Contribution to journalJournal articleResearchpeer-review


The present work presents numerical simulations of the complex particle motion in a supersonic separator with a delta wing located in the supersonic flow. The effect of the delta wing on the strong swirling flow is analysed using the Discrete Particle Method. The results show that the delta wings re-compress the upstream flow and the gas Mach number decreases correspondingly. However, the Mach number does not vary significantly from the small, medium and large delta wing configurations. The small delta wing generates a swirl near its surface, but has minor influences on the flow above it. On the contrary, the use of the large delta wing produces a strong swirling flow in the whole downstream region. For the large delta wing, the collection efficiency reaches 70% with 2 μm particles, indicating a good separation performance of the proposed supersonic separator.
Original languageEnglish
JournalPowder Technology
Pages (from-to)261-267
Publication statusPublished - 2016


  • Particle flow
  • Supersonic separator
  • Discrete Particle Method
  • Delta wing

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