Numerical Study of A Round Buoyant Jet Under the Effect of JONSWAP Random Waves
This paper presents a numerical study on the hydrodynamic behaviours of a round buoyant jet under the effect of JONSWAP random waves. A three-dimensional large eddy simulation （LES） model is developed to simulate the buoyant jet in a stagnant ambient and JONSWAP random waves. By comparison of veloci...
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| Veröffentlicht in: | China ocean engineering 2012-06, Vol.26 (2), p.235-250 |
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| creator | Chen, Yong-ping Li, Chi-wai Zhang, Chang-kuan Xu, Zhen-shan |
| description | This paper presents a numerical study on the hydrodynamic behaviours of a round buoyant jet under the effect of JONSWAP random waves. A three-dimensional large eddy simulation （LES） model is developed to simulate the buoyant jet in a stagnant ambient and JONSWAP random waves. By comparison of velocity and concentration fields, it is found that the buoyant jet exhibits faster decay of centerline velocity, wider lateral spreading and larger initial dilution under the wave effect, indicating that wave dynamics improves the jet entrainment and mixing in the near field, and subsequently mitigate the jet impacts in the far field. The effect of buoyancy force on the jet behaviours in the random waves is also numerically investigated. The results show that the wave effect on the jet entrainment and mixing is considerably weakened under the existence of buoyancy force, resulting in a slower decay rate of centerline velocity and a narrower jet width for the jet with initial buoyancy. |
| doi_str_mv | 10.1007/s13344-012-0018-0 |
| format | Article |
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A three-dimensional large eddy simulation （LES） model is developed to simulate the buoyant jet in a stagnant ambient and JONSWAP random waves. By comparison of velocity and concentration fields, it is found that the buoyant jet exhibits faster decay of centerline velocity, wider lateral spreading and larger initial dilution under the wave effect, indicating that wave dynamics improves the jet entrainment and mixing in the near field, and subsequently mitigate the jet impacts in the far field. The effect of buoyancy force on the jet behaviours in the random waves is also numerically investigated. The results show that the wave effect on the jet entrainment and mixing is considerably weakened under the existence of buoyancy force, resulting in a slower decay rate of centerline velocity and a narrower jet width for the jet with initial buoyancy.</description><identifier>ISSN: 0890-5487</identifier><identifier>EISSN: 2191-8945</identifier><identifier>DOI: 10.1007/s13344-012-0018-0</identifier><language>eng</language><publisher>Heidelberg: Chinese Ocean Engineering Society</publisher><subject>Buoyancy ; Coastal Sciences ; Computational fluid dynamics ; Decay rate ; Engineering ; Entrainment ; Fluid- and Aerodynamics ; Marine ; Marine & Freshwater Sciences ; Mathematical models ; Numerical and Computational Physics ; Ocean engineering ; Oceanography ; Offshore Engineering ; Simulation ; Spreading ; Three dimensional ; 动力学行为 ; 圆形 ; 大涡模拟 ; 数值研究 ; 浮力射流 ; 线速度 ; 随机波 ; 随机海浪</subject><ispartof>China ocean engineering, 2012-06, Vol.26 (2), p.235-250</ispartof><rights>Chinese Ocean Engineering Society and Springer-Verlag Berlin Heidelberg 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c347t-f08f17ec354d951f4921d55cfd5c33dfcd4d0b1642059b928f482aaf9be7a5e83</citedby><cites>FETCH-LOGICAL-c347t-f08f17ec354d951f4921d55cfd5c33dfcd4d0b1642059b928f482aaf9be7a5e83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/86654A/86654A.jpg</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s13344-012-0018-0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s13344-012-0018-0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27922,27923,41486,42555,51317</link.rule.ids></links><search><creatorcontrib>Chen, Yong-ping</creatorcontrib><creatorcontrib>Li, Chi-wai</creatorcontrib><creatorcontrib>Zhang, Chang-kuan</creatorcontrib><creatorcontrib>Xu, Zhen-shan</creatorcontrib><title>Numerical Study of A Round Buoyant Jet Under the Effect of JONSWAP Random Waves</title><title>China ocean engineering</title><addtitle>China Ocean Eng</addtitle><addtitle>China Ocean Engineering</addtitle><description>This paper presents a numerical study on the hydrodynamic behaviours of a round buoyant jet under the effect of JONSWAP random waves. A three-dimensional large eddy simulation （LES） model is developed to simulate the buoyant jet in a stagnant ambient and JONSWAP random waves. By comparison of velocity and concentration fields, it is found that the buoyant jet exhibits faster decay of centerline velocity, wider lateral spreading and larger initial dilution under the wave effect, indicating that wave dynamics improves the jet entrainment and mixing in the near field, and subsequently mitigate the jet impacts in the far field. The effect of buoyancy force on the jet behaviours in the random waves is also numerically investigated. The results show that the wave effect on the jet entrainment and mixing is considerably weakened under the existence of buoyancy force, resulting in a slower decay rate of centerline velocity and a narrower jet width for the jet with initial buoyancy.</description><subject>Buoyancy</subject><subject>Coastal Sciences</subject><subject>Computational fluid dynamics</subject><subject>Decay rate</subject><subject>Engineering</subject><subject>Entrainment</subject><subject>Fluid- and Aerodynamics</subject><subject>Marine</subject><subject>Marine & Freshwater Sciences</subject><subject>Mathematical models</subject><subject>Numerical and Computational Physics</subject><subject>Ocean engineering</subject><subject>Oceanography</subject><subject>Offshore Engineering</subject><subject>Simulation</subject><subject>Spreading</subject><subject>Three dimensional</subject><subject>动力学行为</subject><subject>圆形</subject><subject>大涡模拟</subject><subject>数值研究</subject><subject>浮力射流</subject><subject>线速度</subject><subject>随机波</subject><subject>随机海浪</subject><issn>0890-5487</issn><issn>2191-8945</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kLlOAzEQQC0EEiHwAXSmo1kYX1m7DBGnEEEJiNJyfISg3TWxd5Hy92yUiJJqmvdmNA-hcwJXBKC8zoQxzgsgtAAgsoADNKBEkUIqLg7RAKSCQnBZHqOTnL8ABBGcDND0pat9WllT4XnbuQ2OAY_xLHaNwzdd3JimxU--xe-N8wm3nx7fhuBtu-Wepi_zj_ErnpnGxRp_mB-fT9FRMFX2Z_s5RO93t2-Th-J5ev84GT8XlvGyLQLIQEpvmeBOCRK4osQJYYMTljEXrOMOFmTEKQi1UFQGLqkxQS18aYSXbIgud3u_U1x3Pre6XmXrq8o0PnZZExgp2ocRW5TsUJtizskH_Z1WtUmbHtLbeHoXT_fx9Daeht6hOyf3bLP0SX_FLjX9R_9KF_tDn7FZrnvv7xKnjAMbSfYLL1h7Iw</recordid><startdate>20120601</startdate><enddate>20120601</enddate><creator>Chen, Yong-ping</creator><creator>Li, Chi-wai</creator><creator>Zhang, Chang-kuan</creator><creator>Xu, Zhen-shan</creator><general>Chinese Ocean Engineering Society</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W94</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20120601</creationdate><title>Numerical Study of A Round Buoyant Jet Under the Effect of JONSWAP Random Waves</title><author>Chen, Yong-ping ; Li, Chi-wai ; Zhang, Chang-kuan ; Xu, Zhen-shan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c347t-f08f17ec354d951f4921d55cfd5c33dfcd4d0b1642059b928f482aaf9be7a5e83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Buoyancy</topic><topic>Coastal Sciences</topic><topic>Computational fluid dynamics</topic><topic>Decay rate</topic><topic>Engineering</topic><topic>Entrainment</topic><topic>Fluid- and Aerodynamics</topic><topic>Marine</topic><topic>Marine & Freshwater Sciences</topic><topic>Mathematical models</topic><topic>Numerical and Computational Physics</topic><topic>Ocean engineering</topic><topic>Oceanography</topic><topic>Offshore Engineering</topic><topic>Simulation</topic><topic>Spreading</topic><topic>Three dimensional</topic><topic>动力学行为</topic><topic>圆形</topic><topic>大涡模拟</topic><topic>数值研究</topic><topic>浮力射流</topic><topic>线速度</topic><topic>随机波</topic><topic>随机海浪</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Yong-ping</creatorcontrib><creatorcontrib>Li, Chi-wai</creatorcontrib><creatorcontrib>Zhang, Chang-kuan</creatorcontrib><creatorcontrib>Xu, Zhen-shan</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库-自然科学</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>China ocean engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Yong-ping</au><au>Li, Chi-wai</au><au>Zhang, Chang-kuan</au><au>Xu, Zhen-shan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Numerical Study of A Round Buoyant Jet Under the Effect of JONSWAP Random Waves</atitle><jtitle>China ocean engineering</jtitle><stitle>China Ocean Eng</stitle><addtitle>China Ocean Engineering</addtitle><date>2012-06-01</date><risdate>2012</risdate><volume>26</volume><issue>2</issue><spage>235</spage><epage>250</epage><pages>235-250</pages><issn>0890-5487</issn><eissn>2191-8945</eissn><abstract>This paper presents a numerical study on the hydrodynamic behaviours of a round buoyant jet under the effect of JONSWAP random waves. A three-dimensional large eddy simulation （LES） model is developed to simulate the buoyant jet in a stagnant ambient and JONSWAP random waves. By comparison of velocity and concentration fields, it is found that the buoyant jet exhibits faster decay of centerline velocity, wider lateral spreading and larger initial dilution under the wave effect, indicating that wave dynamics improves the jet entrainment and mixing in the near field, and subsequently mitigate the jet impacts in the far field. The effect of buoyancy force on the jet behaviours in the random waves is also numerically investigated. The results show that the wave effect on the jet entrainment and mixing is considerably weakened under the existence of buoyancy force, resulting in a slower decay rate of centerline velocity and a narrower jet width for the jet with initial buoyancy.</abstract><cop>Heidelberg</cop><pub>Chinese Ocean Engineering Society</pub><doi>10.1007/s13344-012-0018-0</doi><tpages>16</tpages></addata></record> |
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| subjects | Buoyancy Coastal Sciences Computational fluid dynamics Decay rate Engineering Entrainment Fluid- and Aerodynamics Marine Marine & Freshwater Sciences Mathematical models Numerical and Computational Physics Ocean engineering Oceanography Offshore Engineering Simulation Spreading Three dimensional 动力学行为 圆形 大涡模拟 数值研究 浮力射流 线速度 随机波 随机海浪 |
| title | Numerical Study of A Round Buoyant Jet Under the Effect of JONSWAP Random Waves |
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