• 제목/요약/키워드: 입자 인터셉션

검색결과 1건 처리시간 0.013초

원형 실린더 주위의 고온 유동에서 입자의 부착 해석 (Simulation of the Particle Deposition on a Circular Cylinder in High-Temperature Particle-Laden Flow)

  • 정석민;김동주
    • 한국기계가공학회지
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    • 제18권2호
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    • pp.73-81
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    • 2019
  • Numerical simulations are performed for the thermal fluid flow around a circular cylinder, and the particle trajectories are calculated to investigate the particle motions and deposition characteristics. We aim to understand the effects of three important parameters (particle Stokes number, temperature difference in the flow and on the cylinder surface, and thermal conductivity ratio between the fluid and the particles) on the deposition efficiency. The results show that the thermophorectic effect is insignificant for particles with large Stokes numbers, but it affects particles with small Stokes numbers. The deposition efficiency increases with the increase in temperature difference between the flow and the cylinder or the decrease in ratio of thermal conductivity of the particles to the fluid. When thermophoresis becomes significant, the particles are deposited even on the back side of the cylinder.