Volume 22 Issue 10
Sep.  2010
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li qian, cao zhengrui, jin xing. Numerical study on impulse coupling coefficients of conical nozzle and parabolic nozzle for laser propulsion[J]. High Power Laser and Particle Beams, 2010, 22.
Citation: li qian, cao zhengrui, jin xing. Numerical study on impulse coupling coefficients of conical nozzle and parabolic nozzle for laser propulsion[J]. High Power Laser and Particle Beams, 2010, 22.

Numerical study on impulse coupling coefficients of conical nozzle and parabolic nozzle for laser propulsion

  • Publish Date: 2010-09-03
  • A dimensionless factor of conical nozzle is defined combined with incident laser energy, energy deposit efficiency, ambient air pressure, generatrix length and semi-apex angle of nozzle, and it is extended to the study of parabolic nozzle. Effects on impulse coupling coefficients of conical and parabolic nozzles under four semi-apex angles are calculated by radiation gas-dynamics computational code. Results indicate that, there are the maximum impulse coupling coefficients of the two nozzles, and the corresponding dimensionless factor is about 0.4. Impulse coupling coefficient increases with the decrease of semi-apex angle at same dimensionless factor, and the impulse coupling coefficient of parabolic nozzle is greater than that of conical nozzle under the same conditions.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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