The authors' proposed averaging finite difference(AFD) theme bad been tested through the numerical example of a 2-D driven cavity flow, and its accuracy and feasibility have been indicated [1]. In this paper, the ...The authors' proposed averaging finite difference(AFD) theme bad been tested through the numerical example of a 2-D driven cavity flow, and its accuracy and feasibility have been indicated [1]. In this paper, the scheme was adopted to simulate the high Re flow with irregular boundaries so as to prove that it is also successful for this scheme to be used in the flow with irregular boundaries. A 2-D flow around a semicircular obstruction was taken as the calculation example and the first order wall vorticity formula for irregular mesh derived by the authors in Ref. [2] was Chosen to calculate the wall vorticity in the considered example. The salutations were carried out under the conditions: Re = 43, 100, 300, 500, 1000 and 10000.The reasonable flow results and the curve of separated angle or reattached length VS Re were given. The results have shown that the AFD scheme can be extended to the simulations of separated flow with arbitrary boundaries and at high Reynolds number really.展开更多
文摘The authors' proposed averaging finite difference(AFD) theme bad been tested through the numerical example of a 2-D driven cavity flow, and its accuracy and feasibility have been indicated [1]. In this paper, the scheme was adopted to simulate the high Re flow with irregular boundaries so as to prove that it is also successful for this scheme to be used in the flow with irregular boundaries. A 2-D flow around a semicircular obstruction was taken as the calculation example and the first order wall vorticity formula for irregular mesh derived by the authors in Ref. [2] was Chosen to calculate the wall vorticity in the considered example. The salutations were carried out under the conditions: Re = 43, 100, 300, 500, 1000 and 10000.The reasonable flow results and the curve of separated angle or reattached length VS Re were given. The results have shown that the AFD scheme can be extended to the simulations of separated flow with arbitrary boundaries and at high Reynolds number really.
