摘要
借助数值方法建立波浪水槽,扩大开孔率的取值范围(μ=0.1、0.2、0.3、0.4、0.5,其中0.2和0.4为物理模型试验工况),开展了规则波与可渗明基床上开孔沉箱相互作用的数学模型试验,研究开孔率μ与开孔沉箱前波浪反射系数K_r之间的关系。结果表明:当开孔率μ小于0.2时,随着μ的逐渐增大,K_r逐渐减小,不满足物模试验拟合的经验关系式的趋势;当开孔率μ在0.2与0.4之间时,数模值K_r与物模值K_r吻合良好,满足物模试验拟合的经验关系式的趋势;当开孔率μ大于0.4时,随着μ的逐渐增大,K_r逐渐增大,满足物模试验拟合的经验关系式的趋势。
The wave flume was established by numerical method.The interaction between regular wave and perforated caissons on permeable open beds was simulated in the range of expanded opening ratio(μ=0.1,0.2,0.3,0.4,0.5,where 0.2 and 0.4 were physical model test conditions).The relationship between the opening rate μ and the wave reflection coefficient Kr in front of perforated caissons was studied.The results show that the Kr decreases with the increase of the opening rate of μ when the opening rate is less than 0.2,and does not satisfy the empirical relationship of the physical model test fitting.When the opening rate of μ is between 0.2 and 0.4,the numerical modulus Kr coincides well with the physical modulus Kr,which satisfies the empirical relationship trend of the physical model test fitting.When the opening rate of μ is greater than 0.4,the Kr increases gradually with the increase of the opening rate of μ.The trend of experiential relationship fitting for physical model test is satisfied.
作者
蔡郁
孙大鹏
赵沛泓
吴浩
CAI Yu;SUN Da-peng;ZHAO Pei-hong;WU Hao(CCCC Transportation Consultants Co.,Ltd.,Beijing 100007,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《水道港口》
2019年第1期64-69,共6页
Journal of Waterway and Harbor
基金
国家自然科学基金(51279027)
NSFC-山东联合基金(U1706226)
关键词
规则波
开孔沉箱
开孔率
反射系数
明基床
regular wave
rubble foundation
perforated caisson
opening rate
reflection coefficient
作者简介
蔡郁(1990-),男,黑龙江省齐齐哈尔人,助理工程师,主要从事海岸和近海工程研究。
