CAJ | 학술논문

利用 CFD 软件 Fluent 对不同雷诺系数下的二元圆柱绕流进行研究，对雷诺系数 Re 分别为50、500、5000、50000的圆柱绕流过程的流场分布进行展示对比，并着重对 Re 为500时的卡门涡街现象进行详细的分析。结果表明，当50<Re<500时，圆柱绕流过程出现卡门涡街；当 Re>500时，卡门涡街逐渐失去规则性和周期性，当 Re=5000左右时，卡门涡街尾部完全失去规律性。
이용 CFD 연건 Fluent 대불동뢰낙계수하적이원원주요류진행연구，대뢰낙계수 Re 분별위50、500、5000、50000적원주요류과정적류장분포진행전시대비，병착중대 Re 위500시적잡문와가현상진행상세적분석。결과표명，당50<Re<500시，원주요류과정출현잡문와가；당 Re>500시，잡문와가축점실거규칙성화주기성，당 Re=5000좌우시，잡문와가미부완전실거규률성。
Different Reynolds factors of two-dimensional flow around acircular cylinder were studied by using CFD software Fluent with which Re was 50、500、5 000、50 000 flow field in the process of presentation. When Re is 500 and the detailed analysis of Karman Vortex Street phenomenon is made. Results of analysis showed that when 50<Re<500, Karman Vortex Street began to appear. When Re>500, rule and periodicity of the Karman Vortex Street began to lose. When Re = 5 000 around, tail of the Karman Vortex Street lost regularity.