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球面聚心气相爆轰波传播过程的数值研究
NUMERICAL INVESTIGATIONS ON PROPAGATION OF SPHERICALLY IMPLODING GAS DETONATION
查看参考文献9篇
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文摘
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应用频散可控耗散格式对球面聚心气相爆轰波的传播过程进行了数值模拟研究．通过跟踪波阵面上压力和温度变化，分析这些参数在爆轰波传播过程中的演变规律，及其与几何尺度和初始条件之间的依赖关系．研究结果表明，仅在远场波面压力的变化近似只依赖于r／R，对称中心附近则需要考虑初始半径R的影响；波面压力与初始压力的变化呈线性关系；汇聚过程中温度升高比压力慢得多． |
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其他语种文摘
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This paper reports numerical simulations of the propagation of spherically imploding detonations in H2/O2 mixture. One-dimensional Euler equations in spherical coordinates were solved with the dispersion controlled dissipative （DCD） scheme, coupled to an elementary chemical reaction model. The pressure and temperature behind the detonation wave were traced to show their change tendency. Its dependency on the geometrical size and initial conditions were also numerically examined. It is found that the variation of front pressure is representable in terms of approximate functions of r/R only outside the central zone. Linear relations exist between the front and initial pressure. The front temperature increases much slower than the pressure during implosion. |
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来源
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力学学报
,2006,38(3):296-301 【核心库】
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关键词
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气相爆轰波
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球面聚心
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过爆轰
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基元反应模型
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频散可控耗散格式
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地址
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1.
北京应用物理与计算数学研究所, 计算物理国家重点实验室, 北京, 100088
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中国科学院力学研究所, 中科院高温气体动力学(LHD)重点实验室, 北京, 100080
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0459-1879 |
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学科
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力学 |
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基金
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国家自然科学基金资助项目
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文献收藏号
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CSCD:2445487
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9
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