往复流作用下推移质输沙强度的计算公式
|
摘要
为了研究往复流的非恒定效应对推移质运动的影响,能够更准确地预测往复流作用下推移质输沙强度的大小,本文通过对泥沙颗粒运动进行受力平衡和能量守恒分析,推导出往复流作用下推移质输沙强度计算公式,同时将Keulegan-Carpenter数引入公式中对相位滞后效应进行修正,最后根据往复流水槽的实验数据拟合得到一个用于计算半周期平均输沙强度的半理论半经验公式,该公式在小KC数情况下对实测值的预测相比于传统的准恒定流模型有明显提高。
To examine the influence of unsteady effect of oscillatory flow on bedload sediment transport and accurately predict the bedload sediment transport rate under oscillatory flows,this study presents an analysis of force balancing and energy conservation in sediment particle movement. Calculation formulas for bedload sediment transport rate under oscillatory flows are derived and,in the meantime,Keulegan-Carpenter( KC) number is introduced to correct the phase-lag effect. Finally,experimental data on oscillatory flows are fitted,thereby deriving a semitheoretical semi-empirical formula used in calculating the half-cycle averaged bedload sediment transport rate. Compared with the existing quasi-steady flow model,the new formula shows an obvious improvement in predicting the measure results,especially when the KC number is small.
To examine the influence of unsteady effect of oscillatory flow on bedload sediment transport and accurately predict the bedload sediment transport rate under oscillatory flows,this study presents an analysis of force balancing and energy conservation in sediment particle movement. Calculation formulas for bedload sediment transport rate under oscillatory flows are derived and,in the meantime,Keulegan-Carpenter( KC) number is introduced to correct the phase-lag effect. Finally,experimental data on oscillatory flows are fitted,thereby deriving a semitheoretical semi-empirical formula used in calculating the half-cycle averaged bedload sediment transport rate. Compared with the existing quasi-steady flow model,the new formula shows an obvious improvement in predicting the measure results,especially when the KC number is small.
引文
[1]MADSEN O S,GRANT W D. Quantitative description of sediment transport by waves[C]//Proceedings of the 15th International Conference on Coastal Engineering. Honolulu,Hawaii,United States,1976:1093-1112.
[2]SLEATH J F A. Measurements of bed load in oscillatory flow[J]. Journal of the waterway,port,coastal and ocean division,1978,104(3):291-307.
[3]SOULSBY R L. The dynamics of marine sands:a manual for practical applications[M]. London:Thomas Thelford,1997:163-166.
[4]RIBBERINK J S. Bed-load transport for steady flows and unsteady oscillatory flows[J]. Coastal engineering,1998,34(1/2):59-82.
[5]CAMENEN B,LARSON M. A general formula for noncohesive bed load sediment transport[J]. Estuarine,Coastal and Shelf Science,2005,63(1/2):249-260.
[6]HORIKAWA K,WATANABE A,KATORI S. Sediment transport under sheet flow condition[C]//Proceedings of the 18th Conference on Coastal Engineering. Cape Town,South Africa,1982:1335-1352.
[7]AHILAN R V,SLEATH J F A. Sediment transport in oscillatory flow over flat beds[J]. Journal of hydraulic engineering,1987,113(3):308-321.
[8]Van DER A D A,O'DONOGHUE T,RIBBERINK J S.Measurements of sheet flow transport in accelerationskewed oscillatory flow and comparison with practical formulations[J]. Coastal engineering,2010,57(3):331-342.
[9]O'DONOGHUE T,Van DER A D A. Laboratory experiments for wave-driven sand transport prediction[C]//Proceedings of the NCK-days 2012:Crossing Borders in Coastal Research. Enschede,the Netherlands,2012:61-67.
[10]陈杰,刘静,蒋昌波,等.波浪作用下泥沙运动研究综述[J].泥沙研究,2014(4):74-80.CHEN Jie,LIU Jin,JIANG Changbo,et al. Review of sediment transport under waves[J]. Journal of sediment research,2014(4):74-80.
[11]马爱兴,陆永军,陆彦,等.非恒定流作用下砾石推移质输移特性试验研究[J].水利学报,2013,44(7):800-809.MA Aixing,LU Yongjun,LU Yan,et al. Experimental study on gravel bed-load transport in unsteady flow[J].Journal of hydraulic engineering,2013,44(7):800-809.
[12]戚晓明.振荡流作用下的推移质输沙规律研究[D].天津:天津大学,2009.QI Xiaoming. Research on bed-load transport under oscillatory flow[D]. Tianjin:Tianjin University,2009.
[13]SILVA P A,TEMPERVILLE A. Non-steady effects in sand transport[J]. Journal of coastal research,2006,39(3):1479-1483.
[14]DOHMEN-JANSSEN C M,KROEKENSTOEL D F,HASSAN W N,et al. Phase lags in oscillatory sheet flow:experiments and bed load modelling[J]. Coastal engineering,2002,46(1):61-87.
[15]CAMENEN B,LARSON M. Phase-lag effects in sheet flow transport[J]. Coastal engineering,2006,53(5/6):531-542.
[16]DEAN R G,DALRYMPLE R A. Water wave mechanics for engineers and scientists[M]. Englewood Cliffs,NJ:Prentice-Hall,1984:232-232.
[17]KRANENBURG W M,RIBBERINK J S,SCHRETLEN J J L M,et al. Sand transport beneath waves:the role of progressive wave streaming and other free surface effects[J]. Journal of geophysical research:earth surface,2013,118(1):122-139.
[18]Van DER A D A,RIBBERINK J S,Van DER WERF J J,et al. Practical sand transport formula for non-breaking waves and currents[J]. Coastal engineering,2013,76:26-42.
[19]DIBAJNIA M,WATANABE A. Sheet flow under nonlinear waves and currents[C]//Proceedings of the 23rd International Conference on Coastal Engineering. Venice,Italy,1992:226-235.
[20]NIELSEN P. Coastal bottom boundary layers and sediment transport[M]. Singapore,River Edge,NJ:World Scientific,1992:12-13.
[21]MANOHAR M. Mechanics of bottom sediment movement due to wave action[R]. Washington,DC,USA:U. S.Army Corps of Engineers,1955.
[22]KALKANIS G. Transportation of bed material due to wave action[R]. Washington D C,USA:U. S. Army Corps of Engineers,1964.
[23]ABOU-SEIDA M M. Bed load function due to wave action[R]. California,USA:University of California,1965.
[24]SAWAMOTO M,YAMASHITA T. Sediment transport rate due to wave action[J]. Journal of hydroscience and hydraulic engineering,1986,4(1):1-15.
[25]KING JR D B. Studies in oscillatory flow bedload sediment transport[D]. San Diego,USA:University of California,1991:152-173.
[2]SLEATH J F A. Measurements of bed load in oscillatory flow[J]. Journal of the waterway,port,coastal and ocean division,1978,104(3):291-307.
[3]SOULSBY R L. The dynamics of marine sands:a manual for practical applications[M]. London:Thomas Thelford,1997:163-166.
[4]RIBBERINK J S. Bed-load transport for steady flows and unsteady oscillatory flows[J]. Coastal engineering,1998,34(1/2):59-82.
[5]CAMENEN B,LARSON M. A general formula for noncohesive bed load sediment transport[J]. Estuarine,Coastal and Shelf Science,2005,63(1/2):249-260.
[6]HORIKAWA K,WATANABE A,KATORI S. Sediment transport under sheet flow condition[C]//Proceedings of the 18th Conference on Coastal Engineering. Cape Town,South Africa,1982:1335-1352.
[7]AHILAN R V,SLEATH J F A. Sediment transport in oscillatory flow over flat beds[J]. Journal of hydraulic engineering,1987,113(3):308-321.
[8]Van DER A D A,O'DONOGHUE T,RIBBERINK J S.Measurements of sheet flow transport in accelerationskewed oscillatory flow and comparison with practical formulations[J]. Coastal engineering,2010,57(3):331-342.
[9]O'DONOGHUE T,Van DER A D A. Laboratory experiments for wave-driven sand transport prediction[C]//Proceedings of the NCK-days 2012:Crossing Borders in Coastal Research. Enschede,the Netherlands,2012:61-67.
[10]陈杰,刘静,蒋昌波,等.波浪作用下泥沙运动研究综述[J].泥沙研究,2014(4):74-80.CHEN Jie,LIU Jin,JIANG Changbo,et al. Review of sediment transport under waves[J]. Journal of sediment research,2014(4):74-80.
[11]马爱兴,陆永军,陆彦,等.非恒定流作用下砾石推移质输移特性试验研究[J].水利学报,2013,44(7):800-809.MA Aixing,LU Yongjun,LU Yan,et al. Experimental study on gravel bed-load transport in unsteady flow[J].Journal of hydraulic engineering,2013,44(7):800-809.
[12]戚晓明.振荡流作用下的推移质输沙规律研究[D].天津:天津大学,2009.QI Xiaoming. Research on bed-load transport under oscillatory flow[D]. Tianjin:Tianjin University,2009.
[13]SILVA P A,TEMPERVILLE A. Non-steady effects in sand transport[J]. Journal of coastal research,2006,39(3):1479-1483.
[14]DOHMEN-JANSSEN C M,KROEKENSTOEL D F,HASSAN W N,et al. Phase lags in oscillatory sheet flow:experiments and bed load modelling[J]. Coastal engineering,2002,46(1):61-87.
[15]CAMENEN B,LARSON M. Phase-lag effects in sheet flow transport[J]. Coastal engineering,2006,53(5/6):531-542.
[16]DEAN R G,DALRYMPLE R A. Water wave mechanics for engineers and scientists[M]. Englewood Cliffs,NJ:Prentice-Hall,1984:232-232.
[17]KRANENBURG W M,RIBBERINK J S,SCHRETLEN J J L M,et al. Sand transport beneath waves:the role of progressive wave streaming and other free surface effects[J]. Journal of geophysical research:earth surface,2013,118(1):122-139.
[18]Van DER A D A,RIBBERINK J S,Van DER WERF J J,et al. Practical sand transport formula for non-breaking waves and currents[J]. Coastal engineering,2013,76:26-42.
[19]DIBAJNIA M,WATANABE A. Sheet flow under nonlinear waves and currents[C]//Proceedings of the 23rd International Conference on Coastal Engineering. Venice,Italy,1992:226-235.
[20]NIELSEN P. Coastal bottom boundary layers and sediment transport[M]. Singapore,River Edge,NJ:World Scientific,1992:12-13.
[21]MANOHAR M. Mechanics of bottom sediment movement due to wave action[R]. Washington,DC,USA:U. S.Army Corps of Engineers,1955.
[22]KALKANIS G. Transportation of bed material due to wave action[R]. Washington D C,USA:U. S. Army Corps of Engineers,1964.
[23]ABOU-SEIDA M M. Bed load function due to wave action[R]. California,USA:University of California,1965.
[24]SAWAMOTO M,YAMASHITA T. Sediment transport rate due to wave action[J]. Journal of hydroscience and hydraulic engineering,1986,4(1):1-15.
[25]KING JR D B. Studies in oscillatory flow bedload sediment transport[D]. San Diego,USA:University of California,1991:152-173.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |