Student Posters Repository

My research is to assess the safety of rocket on liquid fuel tank destruction. In case of failure of rocket launch, flight termination system is activated to prevent the resulting ground damage due to the induced hazards such as explosions. In a liquid rocket termination operation, fuel is ejected to the mainstream. The self-ignition of the ejected fuel can occur due to the interaction with high speed mainstream. In this research, to clarify the criteria of self-ignition and flame-holding, the investigation of mixing state is performed by using two-dimensional and three-dimensional numerical simulation. As a result of the investigations under wide-range flight conditions, it is founded that the mixing mechanisms are affected by the momentum flux ratio and the pressure ratio governing the size and shape of jet plume. Furthermore, it is confirmed that the specific vortex at high temperature and low velocity has adequate fuel, it can induce self-ignition and flame-holding.