Parameterization of Neutrally Buoyant Horizontal Round Jet in Wave Environment
Parameterization of Neutrally Buoyant Horizontal Round Jet in Wave Environment
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DOI：
10.1061/(asce)0733-950x(2009)135:3(100
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发表时间：
2009-05
期刊：
影响因子：
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通讯作者：
Kuang‐An Chang;Y. Ryu;N. Mori
中科院分区：
文献类型：
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作者：
Kuang‐An Chang;Y. Ryu;N. Mori
本文通过实验研究了规则行波对中性浮力圆湍射流扩散的影响。射流位于中层，沿波传播方向水平向波场中排放。采用粒子图像测速技术和激光诱导荧光技术对射流的速度场和截面轮廓进行了测量。三个不同的波周期与在每个波周期的波振幅范围进行了测试，以研究波射流扩散的效果。波浪条件包括浅水和深水，而波斜率的范围从线性到弱非线性。结果表明，波浪对射流宽度有显著影响。波浪的弥散作用增强了射流的扩散，尤其是在波坡较大、水深较浅的情况下。结果还表明，波喷动量比是表征波浪对射流扩散影响的最重要参数。
The present study is to parameterize the influence of regular progressive waves on the diffusion of a neutrally buoyant turbulent round jet experimentally. The jet, located at the middepth, discharges into the wave field horizontally in the direction against the wave propagation. The particle image velocimetry technique and the laser induced fluorescence technique were used to measure the velocity field and examine the jet cross-sectional profile. Three different wave periods with a range of wave amplitudes in each wave period were tested to investigate the effect of waves on jet diffusion. The wave conditions cover both the shallow water and deep water, whereas the wave slopes range from linear to weakly nonlinear. The results showed that the width of the jet was significantly affected by the waves. The wave dispersion enhanced the jet diffusion, especially for a larger wave slope and a shallower water depth. The results also showed that the wave-to-jet momentum ratio is the most important parameter to characterize the effect of waves to the diffusion of jet.