Numerical investigation on the effects of the laser energy and focal position on the multi-pulses laser propulsion
A detailed parametric study on the air-breathing laser propulsive performance is carried out for multi-pulses. Based on the finite volume scheme, the detailed evolving process of the inner and outer flow fluids is simulated. The numerical models with different focal positions and laser energies are employed to analyze the parameters effect on the multi-pulses impulse coupling coefficient Cm. Moreover, the laser frequency is discussed and compared with those calculations. The simulation results indicate that the focal position is one of the main factors to influence the multi-pulses Cm at low frequency. For high frequency, it is beneficial to replenish the air in the nozzle when the focal position locates near the nozzle exit. The influence of the laser energy is similar to the single pulse at low frequency, but at high frequency, the partial filling air in the nozzle causes low Cm by high laser energy. The multi-pulses Cm is lower than that of a single pulse. In the same calculative time, the higher the laser frequency, the higher the impulse value, but the lower the Cm.
Song Junling Hong Yanji Wen Ming
College of Postgraduate, the Academy of Equipment Command and Technology,Post Box 3380-86, Huairou D Department of Basic theories, the Academy of Equipment Command and Technology,Post Box 3380-86, Huai
国际会议
3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)
武汉
英文
1-8
2010-11-03（万方平台首次上网日期，不代表论文的发表时间）