基于波浪动力效应的泥质河床作用特性研究
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摘要
针对河床泥质属于非牛顿流体,其受波浪效应影响较为复杂的问题,通过分析波浪的作用过程和机理,从泥质粘性、弹性以及塑性角度分析泥质受波浪动力效应影响的运动特征和迁移规律。结果表明:波浪动力效应使泥质悬浮、运输、沉积;在粘性、弹性和塑性因素下,底泥迁移规律复杂,泥层较薄时的受迫振动是主要影响因素,波压驱动则是影响深层泥质的重要因素;波高越大,物质输移速度越快,波高衰减率基本稳定,河床底泥受到临界波高的影响突出。
Muddy riverbed is a non-Newtonian fluid,which is a more complex problem bythe wave effect,by analyzing the process and mechanism of action of waves,from themud viscosity,elasticity and plasticity perspective muddy wave dynamic effects byaffecting the movement characteristics and migration law.The results showed that:themuddy suspension wave dynamic effects,transport,deposition;in viscosity,elasticity and plasticity factors,the complex migration of sediment,mud layer is thinner whenforced vibrations are the main influencing factors affecting wave pressure driven an important factor in the deep mud;wave height greater material transport faster;wave height decay rate basically stable;riverbed sediment impacted by critical wave height.
Muddy riverbed is a non-Newtonian fluid,which is a more complex problem bythe wave effect,by analyzing the process and mechanism of action of waves,from themud viscosity,elasticity and plasticity perspective muddy wave dynamic effects byaffecting the movement characteristics and migration law.The results showed that:themuddy suspension wave dynamic effects,transport,deposition;in viscosity,elasticity and plasticity factors,the complex migration of sediment,mud layer is thinner whenforced vibrations are the main influencing factors affecting wave pressure driven an important factor in the deep mud;wave height greater material transport faster;wave height decay rate basically stable;riverbed sediment impacted by critical wave height.
引文
[1]牛小静.波浪效应与泥质海床的相互作用,博士学位论文[D].北京:清华大学,2008.
[2]韩式方.非牛顿流体本构方程和计算解析理论[M].北京:科学出版社,2000.
[3]练继建,赵子丹,张庆河.波流作用下底泥输移的非线性粘弹性体模型[J].科学通报,1999,44(4):445-448.
[4]严恺.海岸工程[M].北京:海洋出版社,2002.
[5]张庆河,赵子丹.波浪作用下的底泥质量输移[J].天津大学学报,1997,30(3):274-280.
[6]吴永胜,王兆印,胡世雄.淤泥对波浪衰减作用的数值模拟[J].水利学报,2003(7):22-29.
[2]韩式方.非牛顿流体本构方程和计算解析理论[M].北京:科学出版社,2000.
[3]练继建,赵子丹,张庆河.波流作用下底泥输移的非线性粘弹性体模型[J].科学通报,1999,44(4):445-448.
[4]严恺.海岸工程[M].北京:海洋出版社,2002.
[5]张庆河,赵子丹.波浪作用下的底泥质量输移[J].天津大学学报,1997,30(3):274-280.
[6]吴永胜,王兆印,胡世雄.淤泥对波浪衰减作用的数值模拟[J].水利学报,2003(7):22-29.