检索结果-南通市图书馆

3-D NUMERICAL SIMULATION OF CONVOY-GENERATED WAVES IN A RESTRICTED WATERWAY

Journal of Hydrodynamics 2012年第3期24卷 420-429页

作者： OUAHSINE Abdellatif SMAOUI Hassan sergent philippe Université de Technologie de Compiègne Laboratoire Roberval UMR CNRS/UTC 7337 Centre de Recherches Royallieu BP 20529 60206 Compiègne cedex France CETMEF 2boulevard Gambetta BP 60039 60321 Compiègne Cedex France CETMEF 2 boulevard Gambetta BP 60039 60321 Compiègne Cedex France

We consider waves generated by the passing of convoys in a restricted waterway. The magnitude of these waves depends mainly on the geometrical and kinematical parameters of the convoy, such as the speed and the hull geometry. The objective of this study is to predict the relationship between these geometrical and kinematical parameters and the amplitude of ship-generated waves as well as the water plane drawdown. Numerical simulations are conducted by solving the 3-D Navier-Stokes equations along with the standard k-c model for turbulent processes. The results are compared first with the empirical model and second with experimental measurements performed by the French company Compagnie National du Rhone （CNR）.

关键词： ship-generated waves waterway CFD free surface gravity waves

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

3D Modeling of sediment movement by ships-generated wakes in confined shipping channel

引用

International Journal of Sediment Research 2014年第1期29卷 49-58页

作者： Shengcheng JI Abdellatif OUAHSINE Hassan SMAOUI philippe sergent Université de Technologie de Compiègne Laboratoire RobervalUMR CNRS 7337Centre de recherche Royallieu Université de Technologie de Compiègne LHN(CETMEF)/Laboratoire Roberval UMR CNRS 7337Centre de recherche Royallieu

Ship-generated waves and return currents are capable of re-suspending significant quantities of bottom and bank ***,most of the previous studies done on the subject do not show how and where sediment is re-suspended by the wakes and the directions of net *** this paper,a 3D numerical model based on hydro-sedimentary coupling is presented to search the relationship between the sediment movement,and the pattern of ship-generated waves around and far away from the vessel and the return currents around the *** hydrodynamic model is based on 3D Navier-Stokes equations including the standard k-ε model for turbulence processes,and the sediment transport model is based on a 3D equation for the re-suspended sediment *** computation results show that the areas of sediment concentration and transport(whether by resuspension or by the bedload) depend mainly on the position,the speed of the ship in the waterways,the kinematics of ship-generated waves and on the return ***,a map of sediment distribution and the modes of sediment transport generated by the passage of the ship are presented.

关键词： Sediment transport Waterway Ship waves CFD

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Impacts of ship movement on the sediment transport in shipping channel

引用

Journal of Hydrodynamics 2014年第5期26卷 706-714页

作者： JI Sheng-cheng OUAHSINE Abdellatif SMAOUI Hassan sergent philippe JING Guo-qing Université de Technologie de Compiègne.Laboratoire Roberval UMR CNRS 7337Centre de recherché Royallieu BP 2052960206 Compiègne cedexFrance Université de Technologie de Compiègne.Laboratoire Roberval UMR CNRS 7337Centre de recherché Royallieu BP 2052960206 Compiègne cedexFrance CETMEF2Bd GambettaCompiègneFrance CETMEF 2Bd GambettaCompiègneFrance School of Civil Engineering Beijing Jiaotong University

The duration of ship-generated waves （wake waves） and accelerated currents can generate significant influences on the sediment transport. A 3-D numerical model is presented to estimate these effects. The hydrodynamic model is the 3-D Reynolds averaged Navier-Stokes （RANS） equations including the standard k - ε model while the 3-D convection-diffusion model is for the resuspended sediment transport. This hydro-sedimentary model is firstly validated with the trench experimental results, and then applied to the open channel with a moving ship. The computed results demonstrate that the resuspension generation mainly depends on ship speeds, barge number, and the relative distance away from ship. The acceleration effects of ship on the sediment transport are analyzed as well.

关键词： resuspension of sediment shipping channel ship acceleration CFD volume of fluid (VOF) mehtod

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Atrial embolism caused by portal vein embolization:Treatment by percutaneous withdrawal and stenting

引用

World Journal of Hepatology 2012年第12期4卷 412-414页

作者： Ahmed Fouad Bouras Stéphanie Truant Jean-Paul Beregi Geraldine sergent Olivier Delemazure Guido Liddo Gilles Lebuffe philippe Zerbib Franois-René Pruvot Emmanuel Boleslawski Service de Chirurgie Digestive et Transplantation CHUUniv Nord de FranceF-59000 LilleFrance Service d’imagerie cardiovasculaire diagnostique et interventionnelle Hopital cardiologiqueCHUUniv Nord de FranceF-59000 LilleFrance Service d’imagerie digestive diagnostique et interventionnelle Hopital Claude HuriezCHUUniv Nord de FranceF-59000 LilleFrance Service d’anesthésiologie Hopital Claude HuriezCHUUniv Nord de FranceF-59000 LilleFrance

Hepatectomy remains the only curative treatment for many primary and secondary liver *** vein embolization(PVE) has been used to increase the volume of the future liver remnant and thus lower the risk of small-for-size syndrome and postoperative liver *** technique has proven its safety,with a low post-procedure morbidity ***,we describe a very rare case in which a young patient suffered a glue embolism to the right atrial cavity following PVE in preparation for a major hepatectomy for colorectal *** foreign body was withdrawn from the heart with a femoral,percutaneous device and trapped against the wall of the femoral vein with a self-expanding metal *** report shows that this previously unknown complication of PVE can be resolved without recourse to sternotomy and open heart surgery.

关键词： Liver metastasis Percutaneous endovascular intervention Portal vein Embolization Glue Complications Stenting

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：