| 不同密实度网衣周围流场数值模拟 |
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| 引用本文： | 郑艳娜,郭本超,刘德兴,彭海婷.不同密实度网衣周围流场数值模拟[J].大连大学学报,2013(3):50-54. |
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| 作者姓名： | 郑艳娜 郭本超 刘德兴 彭海婷 |
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| 作者单位： | 大连海洋大学 海洋与土木工程学院,辽宁 大连,116023 |
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| 基金项目： | 国家自然科学基金项目(51109022)；辽宁省自然科学基金(201202020)；辽宁省高等学校杰出青年学者成长计划(LJQ2012066)；格平绿色助学行动辽宁环境科研‘123工程’资助(CEPF2010--123-2-18)。 |
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| 摘 要： | 将网衣进简化为平面透空薄板,应用有限体积法求解湍流模型,计算了不同密实度网衣与流场的耦合作用。结果表明,当流速和冲角一定时,密实度越大流速衰减越明显,并且网衣背流区上下两侧的流速增加也越大。随着冲角增大流速衰减越明显,并且阻力系数也随之增大,举力系数先增大后减小,在冲角45°时举力系数最大,在冲角为90度时,举力系数减小为0。
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| 关 键 词： | 网衣 流速衰减 阻力系数 举力系数 数值模拟 |
Numerical Simulation of the Flow Fields around the Net of Different Water Permeability |
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| ZHENG Yan-na
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GUO Ben-chao
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LIU De-xing
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PENG Hai-ting.Numerical Simulation of the Flow Fields around the Net of Different Water Permeability[J].Journal of Dalian University,2013(3):50-54. |
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| Authors: | ZHENG Yan-na GUO Ben-chao LIU De-xing PENG Hai-ting |
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| Institution: | (School of Ocean and Civil Engineering, Dalian Ocean University, Dalian 116023, China) |
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| Abstract: | The finite volume method （FVM） was applied to calculate the coupling effect between reasonable approximated net in different water permeability and flow field. The result indicated that velocity attenuation share synchronization with water permeability. Under a certain velocity and angle of attack, velocity attenuation was more apparent and the flow rate on either side of the porous panel increased when water permeability added. Moreover, as the angle of attack increased, velocity attenuation was obvious accompany with drag coefficient increased, and the lift coefficient increased in the first instance and then decreased, and achieve the optimum value at angle of 45°,and arrived zero at 90°. |
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| Keywords: | net velocity attenuation drag coefficient lift coefficient numerical simulation |
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