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| 水工质激光推进数值建模分析 | |
| 引用本文： | 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. |
| 作者姓名： | 崔村燕 洪延姬 李倩 李强 何国强 |
| 作者单位： | 1. 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 2. 装备指挥技术学院,北京,101416 3. 西北工业大学航天学院,陕西,西安,710072 |
| 基金项目： | 国家重点基础研究发展计划(973计划) |
| 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 |
| 文章编号： | 1001-4055（2007）05-0501-04 |
| 收稿时间： | 2007-04-25 |
| 修稿时间： | 2007-06-05 |
Analysis of numerical models to describe inner flow-field evolution of laser propulsion with water propellant |
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| CUI Cun-yan,HONG Yan-ji,LI Qian,LI Qiang and HE Guo-qiang.Analysis of numerical models to describe inner flow-field evolution of laser propulsion with water propellant[J].Journal of Propulsion Technology,2007,28(5):501-504. | |
| Authors: | CUI Cun-yan HONG Yan-ji LI Qian LI Qiang and HE Guo-qiang |
| 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. |
| Keywords: | Laser propulsion Water propellant Flowfield evolution Evaporation model Deformation and breaking model |
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