A Numerical Analysis for the Initial Stage Inner Flow Field in Vertical Ej ection System
ZHAO Yan-peng
WANG Xue-zhi
LIU Shao-wei
ZHANG Bi-xiu
Abstract：In view of the application of j et piston ej ection mechanism in vertical ej ection system,the source item method and user defined function (UDF)technique of CFD fluent software are used to inj ect mass, momentum and energy of propellant gas into high pressure chamber,the j et flow field in the high pressure chamber and the low pressure chamber at the initial stage is analyzed numerically,the pressure and the ve-locity distribution and changes are obtained,and the influence on the ej ection mechanism from the pressure and the velocity is analyzed.The computation results show that this method can well simulate the ej ection mechanism characteristics of the inner flow field,and can provide a theoretical basis for ej ection mecha-nism and propellant design.
Keywords：vertical ej ection mechanismj et flow fieldnumerical analysis
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 5-8 )