【摘要】 洞塞消能工作为一种新型的内消能工形式,已引起了国内外很多人的关注。本文运用数值模拟方法对这种形式消能工的消能特性进行了精确模拟。研究结果表明,洞塞回流区是能量损失的源地。洞塞能量损失系数主要受到孔径比的影响。随着孔径比的增加,能量损失系数逐步减小,回流区长度减小。更多还原

【Abstract】 In the present paper, the hydraulic characteristics of plug are researched. It could be concluded that the energy loss coefficient is mainly dominated by the contraction ratio of the plug. The less the con-traction ratio of the plug is, the larger is the coefficient. The research results demonstrate that the effects of Reynolds number could be neglected when this number is larger than 105; and plug’s thickness has hardly impact on its energy loss.更多还原