AN　INTEGRATEDC　METHOD　FOR　COMPUTING　COMPUTING　THE　INTERNAL　AND　EXTERNAL　VISCOUS　FLOW　FIELD　AROUND　THE　DUCTED　PROPULSOR　BEHIND　AN　AXISYMMETRIC　BODY

作     者：Zhou Lian-di Zhao Feng(China Ship Scientific Research Center, P.O. Box 116, Wuxi 214082, P. R. China) 

作者机构：China Ship Scientific Research Cent Wuxi China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：1995年第7卷第3期

页      面：72-83页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

主　　题：ducted propulsor viscous flow semi-staggered grid 

摘      要：This paper presents an effective method for computing the internal and external viscous flow field around the ducted propulsor behind an axisymmetric they by using a new Navier-Stokes equations solver with primitive variable continuity equation formulation. In the present numerical method, the calculation equation for pressure with well-defined coefficient,which form is similar to the artificial compressibility method, is developed. A semi-staggered grid system is adopted. Not only the advantage of staggered grid system can be retained but the boundary conditions on the inner and outer surface of the duct can be also carried out easily. By using a special grid system and the programming technique for implementing the jump boundary condition on the duct surfaces, the internal and external viscous flow field around the ducted propulsor behind the axisymmetric they may be calculated integrally in an unified numbered grid system. Some configurations are calculated and compared with experimental date and numerical results of other methods. Illustrative calculations are also presented for a stern of axisymmetric body with the backstep fitted a duct to illustrate the capability of the present method. Beside that, the effect of axial distribution of they force is considered and discussed in order to extend the application range of the present method.