To investigate the performance of optimized aerospike nozzles, the effects of thermal parameters variation in gas flow on aerospike nozzles performance, and to compare the altitude characteristics of bell nozzle and aerospike nozzles with the same area ratio, a numerical program was developed by employing an implicit lower-upper(LU) diagonal decomposition scheme and monotone upstream-centered scheme for conservation laws(MUSCL)-type approach. The control equations were three-dimensional Reynolds averaged Navier-Stokes equations and Euler equations. The performance of round-to-square cell was calculated. The effects of thermal parameters that were frozen or varied on aerospike nozzles performance were presented. The altitude characteristics of aerospike nozzles and bell nozzle were also compared. The results provide reference for the development of aerospike nozzles.
Tomita T, Takahashi M, Onodera T, et al. A simple performance prediction model of clustered linear aerospike nozzles . AIAA 2001-3560, 2001
Hagemann G, Immich H, Dumnov G. Critical assessment of the linear plug nozzle concept . AIAA 2001-3683, 2001
Lam C K G, Bremhorst K A. Modified form of the ��k-ε�� model for predicting wall turbulence[J].Journal of Fluids Engineering.1981,103:456-460
����ǿ, ����ţ, �� ��,��.Ӧ�ü���������ѧ[M].����:�������պ����ѧ������,1998.43~58 Zhu Ziqiang, Wu Ziniu, Li Jin, et al. Applied computational fluid dynamics . Beijing:Beijing University of Aeronautics and Astronautics Press, 1998.43~58(in Chinese)
������, �� ��, ��һ��. ��ʽ��ܶ���������Ż�����[J].�ѧ��,2002,23(2):28~33 Qin Lizi, Liu Yu, Wang Yibai. Optimized performance calculation in multi-parameter for aerospike nozzle[J]. Journal of Astronautics, 2002,23(2):28~33(in Chinese)