二維圓柱繞流數(shù)值模擬本科畢業(yè)論文

1、浙江海洋學(xué)院本科畢業(yè)論文 目錄目 錄摘 要...................................................2ABSTRACT.................................................3 1、緒論......................

2、............................41.1前言...............................................41.2計(jì)算水動力學(xué)介紹...................................41.3 本論文的研究目的和主要工作........................82、數(shù)學(xué)模型...........................................

3、....92.1基本參數(shù)...........................................92.2控制方程..........................................102.3各雷諾數(shù)對應(yīng)的計(jì)算模型............................113、數(shù)值計(jì)算..............................................113.1物理模型的建立.....

4、...............................113.2 網(wǎng)格的劃分.......................................133.3數(shù)值的計(jì)算........................................193.3.1邊界條件........................................193.3.2計(jì)算對象...........................

5、.............193.3.3計(jì)算區(qū)域的選擇..................................193.3.4離散格式及求解..................................193.3.5圖像的后處理....................................204、結(jié)果分析比較..........................................204.1非定常流情

6、況下的各雷諾數(shù)圓柱繞流..................204.1.1物理模型1的二維圓柱繞流........................204.1.2物理模型2的二維圓柱繞流........................274.1.3物理模型3的二維圓柱繞流........................304.2雷諾數(shù)對二維圓柱繞流的影響分析....................334.3其他變量下的圓柱繞流.......

7、.......................344.3.1網(wǎng)格變密的二維圓柱繞流..........................344.3.2半徑變大的二維圓柱繞流..........................374.3.3雙圓柱的二維繞流................................404.3.4加隔板的二維圓柱繞流............................424.4其他參數(shù)對二維圓柱繞流的

8、影響分析..................435、結(jié)論及展望............................................44參考文獻(xiàn)................................................45致謝....................................................47附譯文..............................

9、.....................481浙江海洋學(xué)院本科畢業(yè)論文 摘要The Numerical Simulation of Tw0 Dimensional Circular FlowQiuqiSchool of Naval Architecture and Civil Engineering, Zhejiang O

10、cean University, Zhoushan, Zhejiang 660901［Abstract］This paper applied the CFD method studies in the field of ocean engineering problems of fluid dynamics of water. Numerical methods is its ability to model from the phy

11、sical model and experimental limitations, has good flexibility, adaptability, wide application, to meet the engineering requirements.This thesis applied some of the basic equation of fluid mechanics, using the fluent sof

12、tware, by changing the grid space, the parameters are solved in the laminar flow, the fixed two-dimensional unsteady flow around a cylinder, including single cylinder, two-cylinder flow problem, correctly describes the p

13、hysical phenomena, Obtained flow field and stream function contours of velocity vector ，the results of the numerical simulation of the movement and shedding vortex, lift and drag coefficient changes, the data and conclus

14、ions from the results were compared. And compared with the correct solution, gives reliable results, verify the validity of the numerical solution of the problem. And finally joined in the cylinder is a length behind the