搜索

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

波浪破碎气体的卷入过程及相关统计量的估计

张书文

引用本文:
Citation:

波浪破碎气体的卷入过程及相关统计量的估计

张书文

Air bubble entrainment by breaking waves and estimation of the related statistical quantities

Zhang Shu-Wen
PDF
导出引用
  • 基于实验观测,导出了波浪破碎能量耗散εed、气泡云卷入深度zb、气体卷入速率Q(z)和湍流动能耗散率εT(z)的表达式,在此基础上建立了一种简单、实用的气泡粒径谱参数化模式N(a,z),揭示了波浪破碎气泡云卷入过程能量耗散、气泡破碎临界Hinze特征尺度和气泡粒径谱在不同海况下的变化. 研究表明:气泡云卷入过程能量耗
    Based on the experiments, the energy loss from wave breaking εed, the bubble plume penetration depth zb, the rate of air entrainment Q(z), and the turbulent kinetic energy dissipation rate εT(z) are estimated in this study. As a consequence, a simple bubble size spectrum model N(a,z) is proposed and the rate of energy dissipation due to air bubble entrainment and bubble fragment Hinze scale and bubble size spectrum are investigated under different sea states. It is indicated that the rate of energy dissipation due to air bubble entrainment ranges from 01 to 06 in low and moderate sea states, but may be negligible in the high sea state. Bubble fragment Hinze scale downshifts to the lower-frequency band as wind speed increases. Bubble size spectrum not only depends on the rate of air entrainment, the breaking rate, and the turbulent kinetic energy dissipation rate, but also strongly on the wind and sea state.
    • 基金项目: 国家自然科学基金(批准号:40576021)资助的课题.
计量
  • 文章访问数:  7019
  • PDF下载量:  936
  • 被引次数: 0
出版历程
  • 收稿日期:  2007-09-29
  • 修回日期:  2007-10-29
  • 刊出日期:  2008-05-28

/

返回文章
返回