论文:2014,Vol:32,Issue(5):775-780
引用本文:
孟祥尧, 邱志明, 张鹏, 宋保维. 水中化学羽流的建模和数值模拟分析[J]. 西北工业大学
Meng Xiangyao, Qiu Zhiming, Zhang Peng, Song Baowei. Modeling and Numerical Simulation Analysis ofChemical Plumes Underwater[J]. Northwestern polytechnical university

水中化学羽流的建模和数值模拟分析
孟祥尧1, 邱志明1,2, 张鹏2, 宋保维1
1.西北工业大学 航海学院, 陕西 西安 710072;
2.海军装备研究院, 北京 100073
摘要:
建立了一种新的基于计算流体力学的离散化学羽流模型。该模型使用CFD方法比较精确地计算化学羽流所处的湍流环境,而化学羽流中所含的物质则作为离散相进行建模。利用所建模型对水中的化学羽流进行数值模拟分析,得到了化学羽流的基本特征:化学羽流整体的输运形态曲折蜿蜒;羽流某点的瞬时浓度随时间不断的变化,变化幅度较大且不规则;一段时间内截面的平均浓度分布具有高斯分布的特征。所得结果与实验研究结果一致,验证了模型的合理性,克服了现有模型过于简化而与实际结果一致性差的不足,为羽流追踪探测的研究提供了基础。
关键词:    计算流体力学    输运特性    化学羽流    离散相    高斯分布    流场    湍流模型   
Modeling and Numerical Simulation Analysis ofChemical Plumes Underwater
Meng Xiangyao1, Qiu Zhiming1,2, Zhang Peng2, Song Baowei1
1. School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China;
2. Naval Academy of Armament, Beijing 100073, China
Abstract:
A new discrete chemical plume model based on CFD is established.The model uses CFD to calculatethe turbulent environment of chemical plumes,and the chemical substances contained in the plume are modeled asa discrete phase.The basic characteristics of chemical plumes are obtained through the simulation calculation withthe model: (1)the transport shape of chemical plumes is meandering; (2)instantaneous concentration of plumes atone point changes with time and the variation amplitude is large and irregular; (3)in a period of time the averageconcentration distribution of the cross section is Gaussian distribution.The results are consistent with the experi-mental results,verifying the rationality of the model,overcoming the shortcomings of the current models which aretoo simplified and poorly consistent with actual results,and providing the basis for the study of plume tracing.
Key words:    computational fluid dynamics    transport properties    chemical plume    discrete phase    Gaussian distri-Bution    flow fields    turbulence models   
收稿日期: 2014-03-02     修回日期:
DOI:
通讯作者:     Email:
作者简介: 孟祥尧(1987-),西北工业大学博士研究生,主要从事水中兵器总体技术研究。
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