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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1995.11
- 수록면
- 622 - 632 (11page)
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초록· 키워드
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The present numerical study is aimed to investigate time-dependent characteristics of a two-dimensional lid-driven square cavity flow of three high Reynolds numbers, 7.5×10³, 10⁴ and 3×10⁴. A conservative convection term on irregular grids was adopted by renewing the MAC type difference schemes on regular grids. Relaxation of velocity and pressure is implemented by SOLA algorithm. In case of Re=7.5×10³, flow behavior converges to steady state after a transient period. But for Re=10⁴, periodic unsteady sinusoidal fluctuation of local velocity and kinetic energy is found and continuous movements of small eddies in the secondary flow regions are also discovered. Random generation of eddies and their active migrating behavior are detected for Re=3×10⁴, resulting in complete unsteady and non-linear flow characteristics. And, an organized structure similar to a Moffat vortex is also observed from the time-mean flow patterns. Furthermore, a typoon-like vortex(TLV) appears intemittently and rotates along the separation regions and boundary layers.
목차
Abstract
1. 서론
2. 계산방법
3. 계산결과 및 고찰
4. 결론
참고문헌
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UCI(KEPA) : I410-ECN-0101-2010-553-001510806