A Large Time Step Scheme with Fixed Choice Method for the Free Surface Shallow Water Equations

来源 :中国计算力学大会2018暨国际华人计算力学大会2018 | 被引量 : 0次 | 上传用户:lijia6685621
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Large Tine Step is a high efficiency Scheme for the hyperbolic systems.The time step can be extended to break through the CFL restrictions.It has been used in aerodynamics and shallow water equations,though problems exit which need to be solved such as oscillations.
其他文献
An immersed boundary projection method with the primitive variables is proposed for simulation of fluid-flexible body interaction.Both the 2D filament and the 3D flag motion with the inextensibility c
The accurate simulation of sonic boom is of great importance for the low boom design of the next generation supersonic transport.It is hard to do the direct full-field simulation of sonic boom at crui
Marine riser is commonly used in offshore to connect the offshore oil and gas fields and floating bodies functioning of deep-water oil and gas transportation.The vortexes periodically released by the
Numerical simulation is an important method for the study of wave energy converter.There are,however,many numerical simulation methods based on different assumptions.For example,linear method based on
This paper concerns on the propagation of surface waves in a sink with special structures placed under the water.Due to the time-consuming and costly spend of experiment,with the growing development o
A consistent and conservative numerical scheme has been developed to study natural convection and MHD influences on the complex geometrical channel.This algorithm is based on the charge conservation f
采用欧拉–拉格朗日方法,并考虑气相与颗粒相的双向耦合,对管道内不同工况下气固多相流动进行了数值模拟。基于颗粒与壁面碰撞过程中的能量分析,建立了粉尘沉积–回弹模型,即粉尘颗粒与壁面碰撞后,法向速度所对应的动能大于壁面的黏附能才会回弹,否则会被壁面捕获。由此得出了粉尘颗粒的沉积准则以及颗粒碰撞后的回弹速度。
多年以来,亚音速自由射流的流场及噪声的研究一直是射流研究的热点。它在工程应用中有很重要的价值。本文采用雷诺平均湍流模型和声类比理论对亚音速射流的噪声特性进行了研究。通过设置多组计算工况对亚音速射流的流场和噪声场进行数值计算。
FFTW is an open source library widely used in numerical simulation of turbulence to accelerate the computation.Under most conditions,the option used in FFTW can only influence the computation speed bu
When towing the immersed tube element,the calculation of the water resistance coefficient is important.However,the variation range of the water resistance coefficient is relatively large,which makes t