Simulations of Turbulent Flow Over a Circular Cylinder

• Main Authors: Ling,Yaw-Dongg, 林耀東
• Other Authors: Liang,Wen-Jey
• Format: Others
• Language: zh-TW
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/54232860832763233760

碩士 === 國立臺灣大學 === 機械工程研究所 === 81 === The flow over a circular cylinder is simulated for low Reynolds of Launder and Sharma, and that of Lam and Bremhorst is also paper discusses the influence of adjusting the turbulenthe correlation between separation angle and terms in the turbulent equation. The additional L.epsilon. term in the turbulent rate equation makes the distribution of k along the radial not match with the wall function theory. It seems to be better to constant to correct the overestimation of k. Decreasingve is more influential on flow indicators than increasing it, and C. epsilon.2 is more influential on flow indicators thanIn LS model, C.epsilon.1 is more sensible on this flow field than C. epsilon.2. In the turbulent kinetic energy equation, diffusion best correlated with separation angle, and the production term is