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Karhunen-Loeve 변환을 이용한 Forcing 제트의 동적 특성 해석

이찬희;이상환
Lee, Chan-Hui;Lee, Sang-Hwan

  • 발행 : 1997.06.01

초록

The snapshot method is introduced to approximate the coherent structures of planar forcing jet flow. The numerical simulation of flow field is simulated by discrete vortex method. With snapshot method we could treat the data efficiently and approximate coherent structures inhered in the planer jet flow. By forcing the jet at a sufficient amplitude and at a well-chosen frequency, the paring can be controlled in the region of the jet. Finally we expressed the underlying coherent structures of planar jet flow in the minimum number of modes by Karhunen-Loeve transformation in order to understand jet flow and to make the information storage and management in computers easier.

키워드

난류 가진 제트;응집구조;Karhunen-Loeve 변환;이산화와류방법;와류 요소;용출요소;직접방법;속사방법;와류합체