Characteristics of nonbuoyant jets in a wave environment investigated numerically by SPH
Characteristics of nonbuoyant jets in a wave environment investigated numerically by SPH
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DOI：
10.1007/s10652-019-09712-x
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发表时间：
2020-02-01
影响因子：
2.2
通讯作者：
Sibilla, Stefano
中科院分区：
文献类型：
--
作者：
De Padova, Diana;Mossa, Michele;Sibilla, Stefano
通过数值实验研究了平面射流在静环境和规则波流场中的行为。采用带压力平滑的伪可压缩XSPH格式进行SPH仿真；紊流应力用两方程k-epsilon模型表示。通过与实验测量结果和解析解的比较，验证了SPH模型的正确性。比较了静水中射流和横排不同高度的规则波列射流的主要流体力学特性。重点研究了波高对速度分布的影响。
Numerical experiments of plane jets are performed to investigate their behaviour into a still ambient and into a flow field of regular waves. SPH simulations are obtained by a pseudo-compressible XSPH scheme with pressure smoothing; turbulent stresses are represented by a two-equation k-epsilon model. The SPH model is validated by comparing the obtained results with experimental measurements and analytical solutions. The main fluid mechanical characteristics of jets discharged either in still water or transversally to regular wave trains characterized by different heights are compared. The study focuses specifically on the role played by the wave heights on the velocity distribution.