| 摘要: |
| 为研究内孤立波质量源数值造波方法，本文采用两个点源形式的质量源，分别放置于两层流体的上下层中作为内孤立波激发源。推导源项表达式，从不可压缩流体的Navier-Stokes方程出发，结合内孤立波KdV、eKdV理论，基于商业软件FLUENT发展了一种内孤立波质量源数值造波方法。通过数值模拟，分析了质量源造波过程中内孤立波的生成过程，并将数值模拟结果同理论及实验作对比。结果表明：基于此方法生成的内孤立波波形、波高及波致水平速度与理论及实验吻合度较好，该方法是可行的，并且耗时短、效率高。 |
| 关键词: 质量源 内孤立波 FLUENT 数值造波 |
| DOI：10.11693/hyhz20160500113 |
| 分类号: |
| 基金项目:国家自然科学基金项目，51279187号；山东省科技重大专项项目，2015ZDZX04003号。 |
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| A MASS SOURCE METHOD FOR NUMERICAL SIMULATION ON INTERNAL SOLITARY WAVES BASED ON THE FLUENT |
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JIANG Hai, GUO Hai-Yan, ZHANG Lin, WANG Wei
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College of Engineering, Ocean University of China, Qingdao 266100, China
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| Abstract: |
| To explore mass source method for numerical wave generation of internal solitary waves,we adopted two point-typed mass sources as the excitation point sources,and placed them in the middle of the upper and lower layers of two-layered fluid to generating internal solitary waves.The equations and expressions of the source terms were derived.Based on the Navier-Stokes equation in combination of the KdV and eKdV theories,a mass source method for numerical simulation of internal solitary waves was developed with commercial software FLUENT,and the generation of internal solitary wave in the simulation was analyzed.Comparison between theoretical and experimental outcomes showed good agreement in waveform,wave height,and horizontal velocity,indicating that this mass method is feasible,quick,and efficient. |
| Key words: mass source internal solitary wave FLUENT numerical wave generation |
