Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2001.11b
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- Pages.481-486
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- 2001
A study of the spatial amplification of the Type II instability for the Rotating-disk flow
회전원판 유동의 제2형 불안정성 공간증폭에 관한 이론적 연구
- Published : 2001.11.01
Abstract
The hydrodynamic instability of the three-dimensional boundary layer on a rotating disk introduces a periodic modulation of the mean flow in the form of stationary cross flow vortices. Detailed numerical values of the growth rates, neutral curves and other characteristics have been calculated for the Type II-instabilities. Presented are the neutral stability results concerning the two instability modes by solving new linear stability equations reformulated not only by considering whole convective terms but by correcting some errors in the previous stability equations. The present stability results are agree with the previously known ones within reasonable limit. The spatial amplification contours have been calculated for the moving disturbance wave, whose azimuth angle is between
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