| COMPUTATION OF RETURN FLOWS DUE TO NAVIGATION TRAFFICS IN RESTRICTED WATERWAYS |
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| 作者姓名： | B. S. MAZUMDER S. K. DAS S. N. DAS |
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| 作者单位： | Indian Statistical Institute Kolkata-700 108 India，Prof.，International Institute of Information Technology Pune India Prof.，Assis. Res. Officer Central Water and Power Research Station Pune-411 024 India |
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| 摘 要： | 1 INTRODUCTION Movement of navigation traffic in restricted waterway can generate various hydrodynamic phenomena including return flow (RF), surge wave, drawdown and sediment re-suspension which are absent in open water conditions (Schofield and Martin, 1…
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| 关 键 词： | 水路运输 回流 航运 受限水路 船速 水流速度 临界速度 经验公式 水力计算 |
| 收稿时间： | 2005-03 |
| 修稿时间： | 2006-08 |
COMPUTATION OF RETURN FLOWS DUE TO NAVIGATION TRAFFICS IN RESTRICTED WATERWAYS |
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| B. S. MAZUMDER S. K. DAS S. N. DAS.COMPUTATION OF RETURN FLOWS DUE TO NAVIGATION TRAFFICS IN RESTRICTED WATERWAYS[J].International Journal of Sediment Research,2006,21(4):249-260. |
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| Authors: | BSMAZUMDER SKDAS SNDAS |
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| Abstract: | The paper deals with the development of an empirical model to compute the return flow due to the movement of navigation traffics in restricted waterway when the speed of the navigation traffic is under sub-critical range. The velocity profile of the return flow is modelled, where the functional dependence with respect to ambient flow, principal dimensions of the vessel, wetted cross-sectional area of the river, width and average depth of the river, and the lateral distance of the vessel from the bank are implicitly considered. This model has been validated with the observed data collected from the four specific sites, such as Kampsville, Apple River Island, Goose Island and Clarks Ferry of Illinois River during barge-tow movement. The present model shows significant improvement of return flow prediction in comparison to earlier empirical results. This model has also the ability to determine the locus of zero velocity point. |
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| Keywords: | Return flow Navigation traffic Empirical model Restricted waterway Barge-tow Zero velocity point Froude number |
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