사각 실린더를 지나는 층류 유동특성

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박두현;양경수;안형수
Park, Doohyun;Yang, Kyung-Soo;Ahn, Hyungsu

  • 투고 : 2015.06.17
  • 심사 : 2015.08.31
  • 발행 : 2015.09.30

초록

This study performed numerical simulation to elucidate the characteristics of flow past a rectangular cylinder with various values of the aspect ratio(AR) of the cylinder. We calculated the flow field, force coefficients and Strouhal number of vortex shedding depending on the Reynolds number(Re) and the aspect ratio. The $AR{\approx}1$ is preferred for drag reduction, and 0.375$AR{\approx}0$ is recommended if suppression of the lift-coefficient fluctuation and the shedding frequency is desirable. Furthermore the criticality of the Hopf bifurcation is also reported for each AR.

키워드

가상경계법;수직 평판;정방형 실린더;유동 불안정성

참고문헌

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과제정보

연구 과제 주관 기관 : 한국연구재단