海山后尾迹涡形成因素的数值研究

发布时间：2018-05-24 07:26

  本文选题：ROMS + 海山　； 参考：《水动力学研究与进展(A辑)》2017年03期

【摘要】：该文采用regional ocean modeling system(ROMS)海洋模式,对理想channel中的海山模型,研究均匀分层流作用下,不同的伯格数和来流条件对海山诱导的尾迹涡及垂向流动的影响。结果表明,伯格数越大,越有利于海山后尾迹涡的产生,涡的强度不断增大,且涡脱落频率加快;随流速的增加,海山后尾迹涡的强度增大,涡脱落频率加快,且海山周围的垂向流动增强;当来流速度较低(0.05 m/s)及较高(0.8 m/s)时,均不利于在海山后形成稳定的垂向流动。
[Abstract]:In this paper, regional ocean modeling system roms ocean model is used to study the effects of different Berg numbers and flow conditions on the wake vortex and vertical flow induced by seamounts under the action of homogeneous stratified currents for the seamount model in ideal channel. The results show that the larger the Berg number is, the more favorable it is to the formation of wake vortex behind seamounts, the intensity of vortex increases and the frequency of vortex shedding increases, and with the increase of velocity, the intensity of wake vortex increases and the frequency of vortex shedding increases. The vertical flow around seamounts is enhanced, and the vertical flow is not conducive to the formation of stable vertical flow behind seamounts when the velocity of inflow is lower than 0.05 m / s) and the velocity is higher than 0.8 m / s.
【作者单位】： 清华大学深圳研究生院海洋学部;
【基金】：国家重点基础研究发展计划(973项目,2014CB745002)~~
【分类号】：P731.2
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本文编号：1928208