检索结果-南通市图书馆

A Hybrid Finite-Volume and Finite Difference scheme for Depth- Integrated Non-Hydrostatic Model

China Ocean Engineering 2017年第3期31卷 261-271页

作者： YIN- Jing SUN Jia-wen WANG Xing-gang YU Yong-hai SUN Zhao-chen National Marine Environmental Monitoring Center Dalian 116023 China Key State Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116023 China Nanjing Hydraulic Research Institute Nanjing 210029 China

A depth-integrated, non-hydrostatic model with hybrid finite difference and finite volume numerical algorithm is proposed in this paper. By utilizing a fraction step method, the governing equations are decomposed into hydrostatic and non-hydrostatic parts. The first part is solved by using the finite volume conservative discretization method, whilst the latter is considered by solving discretized Poisson-type equations with the finite difference method. The second-order accuracy, both in time and space, of the finite volume scheme is achieved by using an explicit predictor-correction step and linear construction of variable state in cells. The fluxes across the cell faces are computed in a Godunov-based manner by using musta scheme. Slope and flux limiting technique is used to equip the algorithm with total variation dimensioning property for shock capturing purpose. Wave breaking is treated as a shock by switching off the non-hydrostatic pressure in the steep wave front locally. The model deals with moving wet/dry front in a simple way. Numerical experiments are conducted to verify the proposed model.

关键词： non-hydrostatic model shock-capturing wave breaking finite volume method musta scheme

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

A Numerical Study of Two-Fluid Models with Pressure and Velocity Relaxation

引用

Advances in Applied Mathematics and Mechanics 2010年第2期2卷 131-159页

作者： Svend Tollak Munkejord SINTEF Energy Research Sem Sælands veg 11NO-7465 TrondheimNorway

This paper presents a study of pressure and velocity relaxation in twophase flow *** of the present observations have been made elsewhere,and the purpose of the paper is to strengthen these observations and draw some *** is numerically demonstrated how a single-pressure two-fluid model is recovered when applying instantaneous pressure relaxation to a twopressure two-fluid ***,instantaneous velocity relaxation yields a driftflux *** is also shown that the pressure relaxation has the disadvantage of inducing a large amount of numerical *** comparisons have been conducted by using analogous numerical schemes,and a multi-stage centred(musta)scheme for non-conservative two-fluid models has been applied to and tested on the two-pressure two-fluid *** for other,previously tested two-phase flow models,the musta schemes have been found to be robust,accurate and ***,compared to their Roe reference schemes,they consistently have a lower computational efficiency for problems involving mass transport.

关键词： Two-phase flow two-fluid model musta scheme pressure relaxation velocity relaxation

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

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

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：