迎角直到60度旋转体涡流的多重线涡模型  

MULTIPLE LINE-VORTEX MODEL OF VORTEX FLOWS AROUND BODY OF REVOLUTION AT HIGH ANGLES OF ATTACK UP TO 60 DEGREES

作　　者：张武[1] 罗时钧[2] 朱培烨[3] 

机构地区：[1]北京大学 [2]西北工业大学 [3]航空航天部西安计算技术所

出　　处：《空气动力学学报》1991年第3期316-323,共8页Acta Aerodynamica Sinica

摘　　要：本文用改进的多重线涡模型计算大迎角低速旋转体的对称和非对称涡流。通过给定物面上对称或非对称的分离线位置,现在提出的算法有效地解决了涡强度与自由涡线位置的迭代匹配问题,首次得到了迎角大到60度的涡流数值解。对一个切拱头体计算出的气动力特性与实验结果相符。This paper deals with the computation of the symmetric and asymmetric vortex flows around body of revolution at high angles of attack and low speed by means of an improved multiple line-vortex model (MLVM).With given symmetric or asymmetric separation lines on the body surface, vortex strengths and free vortex locations are solved by an efficient iteration method presented by this paper.The first converged solution at angles of attack up to 60° is obtained by using the method. Calculated results of aerodynamic loads on a tangent-ogive forebody compare favorably with experimental data.

关 键 词：多重线涡 模型 非对称 涡流 旋转体 

分 类 号：O357.1[理学—流体力学]