Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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EXPERIMENTAL REPRODUCTION AND NUMERICAL ANALYSIS OF THE SIDE FORCE ON AN OGIVE FOREBODY AT A HIGH ANGLE OF ATTACK

고받음각 동체에 발생하는 측력의 실험적 재현 및 수치적 분석

  • Received : 2012.08.01
  • Accepted : 2013.03.14
  • Published : 2013.03.31
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Abstract

Behavior of the side force generated at high angles of attack by two ogive-cylinder bodies of revolution with nose fineness ratio of 2.3 (B1) and 3.5 (B2) and the effect of a strip placed close the nose tip of each body (B1S and B2S) are analyzed through the wind tunnel test at ReD=200,000 and a=42~60 deg. The side force generated by B1 is increased by placing a strip. The side force generated by B2 is in the starboard direction and its magnitude is higher than that of the B1S. The effect of the strips with various dimensions placed on B2 is investigated. It is found that the 4-layer strip placed on the starboard reversed the direction of the side force into port direction. It is confirmed by numerical simulations that the strip promotes the flow separation and increases the average pressure on the side where it is placed and consequently produces the side force in the corresponding direction.

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References

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