An unstructured mesh method for numerical simulation of violent sloshing flows

Large eddy simulation (LES) was made to solve the flow around two simplified CRH2 high speed trains passing by each other at the same speed base on the finite volume method and dynamic layering mesh method and three dimensional incompressible Navier-Stokes equations. Wind tunnel experimental method of resting train with relative flowing air and dynamic mesh method of moving train were compared. The results of numerical simulation show that the flow field structure around train is completely different between wind tunnel experiment and factual running. Two opposite moving couple of point source and point sink constitute the whole flow field structure during the high speed trains passing by each other. All of streamlines originate from point source (nose) and finish with the closer point sink (tail). The flow field structure around train is similar with different vehicle speed.

Download Full-text

CFD Comparison Study for Trapezoidal High-Lift Wing Configurations by Structured and Unstructured Mesh Method

49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition ◽

10.2514/6.2011-937 ◽

2011 ◽

Cited By ~ 9

Author(s):

Mitsuhiro Murayama ◽

Kazuomi Yamamoto ◽

Kentaro Tanaka

Keyword(s):

Unstructured Mesh ◽

Comparison Study ◽

High Lift ◽

Mesh Method

Download Full-text

An Adaptive Mesh Method to Speed up the Numerical Simulation of an Underwater Explosion

Shock Waves @ Marseille III ◽

10.1007/978-3-642-78835-2_48 ◽

1995 ◽

pp. 285-288

Author(s):

Philippe Boyce ◽

Thierry Hocquellet

Keyword(s):

Numerical Simulation ◽

Underwater Explosion ◽

Adaptive Mesh ◽

Adaptive Mesh Method ◽

Mesh Method ◽

Speed Up

Download Full-text

Direct numerical simulation of edge tone by the unified numerical method using free mesh method

The Proceedings of The Computational Mechanics Conference ◽

10.1299/jsmecmd.2003.16.917 ◽

2003 ◽

Vol 2003.16 (0) ◽

pp. 917-918

Author(s):

Jun TSUCHIDA ◽

Toshimitsu FUJISAWA ◽

Genki YAGAWA

Keyword(s):

Numerical Simulation ◽

Direct Numerical Simulation ◽

Numerical Method ◽

Mesh Method

Download Full-text

Effect of Blade Inclining Angle on Internal Characteristic of Hydraulic Retarder

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.664.89 ◽

2014 ◽

Vol 664 ◽

pp. 89-93

Author(s):

Hui Xiao ◽

Ya Xu Chu

Keyword(s):

Numerical Simulation ◽

Moving Mesh ◽

Moving Mesh Method ◽

Internal Characteristic ◽

Mesh Method ◽

Braking Torque ◽

Simplec Algorithm ◽

Simulation Results ◽

Hydraulic Retarder ◽

Rng Turbulence Model

Based on CFD software platform the numerical simulation of internal characteristic of hydraulic retarder was performed by moving mesh method with the RNG turbulence model and the SIMPLEC algorithm simultaneously, the internal characteristics of velocity and pressure distribution were analyzed through the numerical simulation and post-processing. Comparing the calculation braking torque with the simulation results. The result shows that the model under 42°vane degree has the biggest impact.

Download Full-text

Optimal Design of a New Type of Savonius Rotor Using Simulation Analysis

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.499.120 ◽

2012 ◽

Vol 499 ◽

pp. 120-125 ◽

Cited By ~ 1

Author(s):

Zhi Peng Tang ◽

Ying Xue Yao ◽

Liang Zhou ◽

Q. Yao

Keyword(s):

Fluid Dynamics ◽

Numerical Simulation ◽

Computational Fluid Dynamics ◽

Optimal Design ◽

Simulation Analysis ◽

Structural Parameters ◽

Sliding Mesh ◽

Savonius Rotor ◽

Mesh Method ◽

New Type

In order to enhance the efficiency of the Savonius rotor, this paper designs a new type of Savonius rotor with a rectifier. By using Computational Fluid Dynamics software to simulate and optimize the various parameters which affect the efficiency of the rotor. The sliding mesh method is applied here. The Cp-λ curves of wind turbine with different structural parameters are obtained after numerical simulation of flow field. On this basis, this paper gets the optimal structural parameters. And the results indicated that this new type of Savonius rotor has great improvement of efficiency compared with the traditional Savonius-type rotor.

Download Full-text