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Yang Y.-C.,Second Artillery Engineering University No201 Staff Room | Wu P.-P.,Second Artillery Engineering University No201 Staff Room | Gao S.-W.,Second Artillery Engineering University No201 Staff Room | Qian Z.-K.,Second Artillery Engineering University No201 Staff Room
Guti Huojian Jishu/Journal of Solid Rocket Technology | Year: 2012

A side load in the overexpanded nozzle was studied by means of a three-dimensional numerical simulation method. The MpCCI software was used to link the FLUENT CFD code whose UDF is applied with the ABAQUS FE code to analyze gas flow and nozzle deformation. Results show that three types of asymmetric shock physics incur strong side loads: the generation of combustion wave, shock transitions, and shock pulsations across the nozzle lip. Moreover, the ramp time results show that the ramp rate has the potential effect on the nozzle side loads. The fluid-structure coupled numerical simulation support the accuracy of the method of numerical simulation. The simulation provides the base for further study. Source

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