浅浸没水平圆柱浮子波浪力计算研究
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摘要
以海漂垃圾收集装置浮式围栏的圆柱浮子为研究对象,基于圆柱浮子的浅浸没特性,改进了Morison方程,并结合物理模型试验,对波浪与浅浸没水平圆柱浮子作用问题进行探讨。结果表明,改进的Morison方程可对水平圆柱浮子的波浪力做精确预测,并揭示了波幅、浸没深度以及周期对圆柱浮子波浪力的影响规律。对于浅浸没的圆柱浮子,所受水平波浪力随波高的增大而增大,随周期的增大而衰减到某一特定值。波浪力的正向大小分布要大于负向,而正负向大小的差异主要受浸没深度的影响。
Based on the partial immersion characteristics of the cylindrical float,the Morison equation is modified,and the interaction between wave and partially immersed horizontal cylindrical float is discussed in depth based on physical model experiments. The results show that the modified Morison equation can accurately predict the variation of the wave force of the horizontal cylindrical float,and the influence of wave amplitude,immersion depth and period on the wave force of the cylindrical float is also revealed. For a partially immersed cylindrical float,the wave force increases with the wave height and decreases to a certain value with the wave period. The distribution of the value of the positive wave force is larger than the negative one,and the difference between them is mainly affected by the immersion depth.
Based on the partial immersion characteristics of the cylindrical float,the Morison equation is modified,and the interaction between wave and partially immersed horizontal cylindrical float is discussed in depth based on physical model experiments. The results show that the modified Morison equation can accurately predict the variation of the wave force of the horizontal cylindrical float,and the influence of wave amplitude,immersion depth and period on the wave force of the cylindrical float is also revealed. For a partially immersed cylindrical float,the wave force increases with the wave height and decreases to a certain value with the wave period. The distribution of the value of the positive wave force is larger than the negative one,and the difference between them is mainly affected by the immersion depth.
引文
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[12]桂福坤,姚晓杰,孟昂,等.杆件结构物水动力系数与波浪要素关系研究[J].大连理工大学学报,2017(2):164-169.(GUI F K,YAO X J,MENG A,et al. Research on relationship of wave parameters and hydrocoefficient of bar structures[J].Journal of Dalian University of Technology,2017(2):164-169.(in Chinese))
[13] DIXON A G,GREATED C A,SALTER S H. Wave forces on partially submerged cylinders[J]. Journal of the Waterway Port Coastal and Ocean Division,1979,105(4):421-438.
[14] HU Z Z,CAUSON D M,MINGHAM C G,et al. Numerical simulation of floating bodies in extreme free surface waves[J].Natural Hazards and Earth System Science,2011,11:519-527.
[15] EASSON W J,GREATED C A,DURANNI T S. Force spectra from partially submerged circular cylinders in random seas[J].Journal of Waterway Port Coastal and Ocean Engineering,1985,111(5):856-879.
[16]陈畅,张世富,张起欣,等.基于改进Morison公式的海上漂浮软管波浪载荷计算[J].后勤工程学院学报,2015(2):40-43.(CHEN C,ZHANG S F,ZHANG Q X,et al. Wave load computation of offshore floating hose based on improved morison equation[J]. Journal of Logistical Engineering University,2015(2):40-43.(in Chinese))
[17]赵德廷.海底水平圆管横向波浪力系数测试研究[J].中国海上油气:工程,1993(4):28-34.(ZHAO D T. A study on the measurement for cross wave force coefficient of the subsea horizontal pipe[J]. China Offshore Oil and Gas,1993(4):28-34.(in Chinese))
[18]李玉成,滕斌.波浪对海上建筑物的作用[M].北京:海洋出版社,2002.(LI Y C,TENG B. Wave action on maritime structures[M].Beijing:Ocean Press,2002.(in Chinese))
[19]姚晓杰,桂福坤,孟昂,等.波浪要素对水平圆柱杆件水动力系数影响研究[J].海洋工程,2016,34(1):80-87.(YAO X J,GUI F K,MENG A,et al. Experimental study on hydro-coefficients of horizontal cylinder structure in waves[J]. The Ocean Engineering,2016,34(1):80-87.(in Chinese))
[20]胡克,付世晓,许玉旺,等.不同浸没深度下水平圆柱体的水动力特性试验研究[J].船舶力学,2017,21(10):1190-1198.(HU K,FU S X,XY W,et al. Experimental research about hydrodynamic characteristics of horizontal cylinder under different draft[J]. Journal of Ship Mechanics,2017,21(10):1190-1198.(in Chinese))
[2] MORISON J R,O'BRIEN M P,JOHNSON J W,et al.The force exerted by surface waves on piles[J]. Petroleum Transactions,American Institute of Mining Engineers,1950,189:149-154.
[3] BIDDE D D.Laboratory study of lift forces on circular piles[J]. Journal of the Waterways Harbors and Coastal Engineering Division,1971,97:595-614.
[4]李玉成,何明.作用于小尺度方柱上的正向波浪力[J].海洋学报,1996,18(3):107-120.(LI Y C,HE M. Normal wave forces acting on small-scalerectangular cylinder[J]. Acta Oceanologica Sinica,1996,18(3):107-120.(in Chinese))
[5] NATH J H. On wave force coefficient variability[J]. Journal of Offshore Mechanics and Arctic Engineering,1987,109(4):295-306.
[6]康海贵,李玉成,王洪荣.垂直桩柱正向波流力的计算及水动力系数CD、CM分析方法的探讨[J].水动力学研究与进展,1990(3):91-101.(KANG H G,LI Y C,WANG H R. Method for the calculation of inline forces on a vertical circular cylinder and the analysis of hydrodynamic coefficients CD,CMin wave current co-existing field[J]. Journal of Hydrodynamics,1990(3):91-101.(in Chinese))
[7] LEE J F,LAN Y J. Wave forces on vertical circular cylinders[J]. Journal of the Waterways Harbors&Coastal Engineering Division,1993,102:203-221.
[8]姜胜超,滕斌,宁德志,等.波浪对淹没垂直圆柱浇射解析解[J].海洋工程,2010,28(3):68-75.(JIANG Shengchao,TENG Bin,NING Dezhi,et al. An analytical solution of wave diffraction by a submerged vertical cylinder[J]. The Ocean Engineering,2010,28(3):68-75.(in Chinese))
[9]严以新.水平圆柱上的波压力[D].南京:华东水利学院,1981.(YAN Y X. Wave forces on horizontal cylinder[D].Nanjing:East China Technical University of Water Resources,1981.(in Chinese))
[10]薛鸿超,过达,严以新.水平圆柱上波压力的非线性分析[J].海洋工程,1983,1(1):38-51.(XUE H C,GUO D,YAN Y X. Non-linear analysis of wave force on horizontal cylinder[J]. The Ocean Engineering,1983,1(1):38-51.(in Chinese))
[11]李勇,林缅.波浪作用下水平柱体水动力系数研究[C]∥第二十一届全国水动力学研讨会暨第八届全国水动力学术会议文集.北京:海洋出版社,2008:678-683.(LI Y,LIN M. Study on hydrodynamic coefficients of horizontal cylinder under waves[C]∥Proceedings of the 21st National Conference on hydrodynamics and the 8th National Congress on hydrodynamics.Beijing:Ocean Press,2008:678-683.(in Chinese))
[12]桂福坤,姚晓杰,孟昂,等.杆件结构物水动力系数与波浪要素关系研究[J].大连理工大学学报,2017(2):164-169.(GUI F K,YAO X J,MENG A,et al. Research on relationship of wave parameters and hydrocoefficient of bar structures[J].Journal of Dalian University of Technology,2017(2):164-169.(in Chinese))
[13] DIXON A G,GREATED C A,SALTER S H. Wave forces on partially submerged cylinders[J]. Journal of the Waterway Port Coastal and Ocean Division,1979,105(4):421-438.
[14] HU Z Z,CAUSON D M,MINGHAM C G,et al. Numerical simulation of floating bodies in extreme free surface waves[J].Natural Hazards and Earth System Science,2011,11:519-527.
[15] EASSON W J,GREATED C A,DURANNI T S. Force spectra from partially submerged circular cylinders in random seas[J].Journal of Waterway Port Coastal and Ocean Engineering,1985,111(5):856-879.
[16]陈畅,张世富,张起欣,等.基于改进Morison公式的海上漂浮软管波浪载荷计算[J].后勤工程学院学报,2015(2):40-43.(CHEN C,ZHANG S F,ZHANG Q X,et al. Wave load computation of offshore floating hose based on improved morison equation[J]. Journal of Logistical Engineering University,2015(2):40-43.(in Chinese))
[17]赵德廷.海底水平圆管横向波浪力系数测试研究[J].中国海上油气:工程,1993(4):28-34.(ZHAO D T. A study on the measurement for cross wave force coefficient of the subsea horizontal pipe[J]. China Offshore Oil and Gas,1993(4):28-34.(in Chinese))
[18]李玉成,滕斌.波浪对海上建筑物的作用[M].北京:海洋出版社,2002.(LI Y C,TENG B. Wave action on maritime structures[M].Beijing:Ocean Press,2002.(in Chinese))
[19]姚晓杰,桂福坤,孟昂,等.波浪要素对水平圆柱杆件水动力系数影响研究[J].海洋工程,2016,34(1):80-87.(YAO X J,GUI F K,MENG A,et al. Experimental study on hydro-coefficients of horizontal cylinder structure in waves[J]. The Ocean Engineering,2016,34(1):80-87.(in Chinese))
[20]胡克,付世晓,许玉旺,等.不同浸没深度下水平圆柱体的水动力特性试验研究[J].船舶力学,2017,21(10):1190-1198.(HU K,FU S X,XY W,et al. Experimental research about hydrodynamic characteristics of horizontal cylinder under different draft[J]. Journal of Ship Mechanics,2017,21(10):1190-1198.(in Chinese))