| 气相爆轰模拟的动态存储/删除算法 |
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| 引用本文： | 董刚,范宝春.气相爆轰模拟的动态存储/删除算法[J].南京理工大学学报(自然科学版),2009,33(5). |
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| 作者姓名： | 董刚 范宝春 |
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| 作者单位： | 南京理工大学,瞬态物理国家重点实验室,江苏,南京,210094 |
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| 基金项目： | 总装重点实验室开放基金(9140C3004060603) |
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| 摘 要： | 针对反应流中刚性化学反应源项直接积分计算量大的问题,提出了减少计算时间的动态数据库存储/删除算法。分别在一维爆轰和二维爆轰计算中对算法进行了检验。计算结果表明,该算法既可以很好地满足计算精度要求,又减少了对计算机的内存占用。对于一维爆轰波传播,计算的加速比随数据库容量的增加而增加,其最大加速比接近6;对于二维激波聚集诱导的爆轰,数据库容量不超过1 000 MB时,计算的加速比为2.54。该文算法在处理瞬态反应流问题时具有通用性和优越性。
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| 关 键 词： | 爆炸力学 动态存储 动态删除 化学反应 爆轰波 数值模拟 |
Dynamical Storage-deletion Algorithm for Gaseous Detonation Modelling |
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| DONG Gang,FAN Bao-chun.Dynamical Storage-deletion Algorithm for Gaseous Detonation Modelling[J].Journal of Nanjing University of Science and Technology(Nature Science),2009,33(5). |
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| Authors: | DONG Gang FAN Bao-chun |
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| Institution: | National Key Laboratory of Transient Physics;NUST;Nanjing 210094;China |
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| Abstract: | A dynamical storage-deletion algorithm of database for reducing computational cost is proposed to solve the stiff chemical reaction source term with time-consuming by direct integration.The algorithm is examined in computations of one-dimensional and two-dimensional gaseous detonations,respectively.Computational results show that the algorithm can not only satisfy the requirements of computational accuracy,but also relax the stringent limitation of the computer memory occupancy.For the one-dimensional deton... |
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| Keywords: | explosion mechanics dynamical storage dynamical deletion chemical reactions detonation waves numerical simulation |
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