水工质激光推进数值建模分析

推进技术 ›› 2007, Vol. 28 ›› Issue (5): 501-504.

水工质激光推进数值建模分析

崔村燕,洪延姬,李倩,李强,何国强

西北工业大学航天学院陕西西安710072 ;装备指挥技术学院;北京101416;装备指挥技术学院;北京101416;装备指挥技术学院;北京101417;西北工业大学航天学院陕西西安710072;西北工业大学航天学院陕西西安710072

发布日期:2021-08-15
基金资助:
国家“九七三”项目(61328)

Analysis of numerical models to describe inner flow-field evolution of laser propulsion with water propellant

Coll.of Astronautics,Northwestern Polytechnical Univ.,Xi′an 710072,China;Inst.of Equipment Command and Technology,Beijing 101416,China;Inst.of Equipment Command and Technology,Beijing 101416,China;Inst.of Equipment Command and Technology,Beijing 101416,China;Coll.of Astronautics,Northwestern Polytechnical Univ.,Xi′an 710072,China;Coll.of Astronautics,Northwestern Polytechnical Univ.,Xi′an 710072,China

Published:2021-08-15

摘要/Abstract

摘要： 在对水工质激光推进内流场特征分析的基础上,对描述内流场演化过程的数学模型进行探讨,研究了水滴蒸发模型、水滴变形和破碎模型在水工质激光推进内流场演化过程中的作用。研究结果表明,流场演化过程中,蒸发引起的水滴体积变化率不会超过0.0216%,因而蒸发模型对于计算结果影响不大,在计算过程中可以忽略;水滴在激波流场的作用下破碎成较小的水滴,形成二次雾化,破碎后的水滴体积最小只有原体积的1.5%,对于激光能量的沉积有较大影响,所以在计算中必须考虑水滴变形和破碎模型。

关键词: 激光推进;水工质;流场演化;蒸发模型;变形和破碎模型

Abstract: To describe inner flow-field of laser propulsion with water propellant,mathematical models based on analysis of its characteristics was established.Effects of evaporation model and deformation and breaking model on evolution of inner flow-field were investigated.Results show that capacity change rate of droplet is no more than 0.0216% caused by evaporation and volume of broken water drop produced by shock wave is about 1.5% of the original one.So evaporation can be ignored in the process of flow-field evolution,and deformation and breaking must be considered for its second atomization and its effect on deposition of laser energy.

Key words: Laser propulsion;Water propellant;Flowfield evolution;Evaporation model;Deformation and breaking model

崔村燕,洪延姬,李倩,李强,何国强. 水工质激光推进数值建模分析[J]. 推进技术, 2007, 28(5): 501-504.