| 三维无网格法及其在超音速弹丸流场模拟中的应用 |
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| 引用本文： | 马新建,谭俊杰,任登凤.三维无网格法及其在超音速弹丸流场模拟中的应用[J].弹道学报,2010,22(3). |
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| 作者姓名： | 马新建 谭俊杰 任登凤 |
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| 作者单位： | 南京理工大学,动力工程学院,南京,210094;南京理工大学,动力工程学院,南京,210094;南京理工大学,动力工程学院,南京,210094 |
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| 基金项目： | 国家自然科学基金项目(11072114) |
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| 摘 要： | 为研究三维无网格方法及其在超音速流场模拟中的应用,基于Batina发展的显式无网格算法,借鉴非结构网格方法下的耗散模型,给出了一种无网格法下求解三维Euler方程的具体实现形式,并对某标准弹丸在超音速下不同马赫数、不同攻角的绕流流场进行了数值模拟,分析了其在不同马赫数和不同攻角下的升、阻力系数,俯仰力矩系数以及压心等,与实验结果进行了比较,结果基本一致.计算结果很好地验证了文中的三维无网格法在超音速流场数值模拟中的准确性和实用性.
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| 关 键 词： | 无网格法 三维Euler方程 超音速流场 弹丸 气动力 |
Three-Dimensional Meshless Method and Its Application in Supersonic Flow Field Simulation of Projectile |
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| MA Xin-jian
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TAN Jun-jie
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REN Deng-feng.Three-Dimensional Meshless Method and Its Application in Supersonic Flow Field Simulation of Projectile[J].Journal of Ballistics,2010,22(3). |
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| Authors: | MA Xin-jian TAN Jun-jie REN Deng-feng |
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| Affiliation: | MA Xin-jian,TAN Jun-jie,REN Deng-feng(School of Power Engineering,NUST,Nanjing 210094,China) |
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| Abstract: | To study 3D meshless method and its application in supersonic flow field simulation,based on meshless method proposed by Batina,the idiographic model was used to solve three-dimensional Euler equations.The supersonic flow field around projectile was numerically simulated under the conditions of different Mach numbers and different attack angles.Drag lift coefficient,pitch moment coefficient and pressure centre of projectile were analyzed correspondingly.The simulation results agree well with the experiment ... |
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| Keywords: | meshless method three-dimensional Euler equation supersonic flow field projectile aerodynamics |
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