Dynamic Simulation of 3D Flow Field of Train Damper

2011 ◽  
Vol 47 (06) ◽  
pp. 130 ◽  
Author(s):  
Wensi DING
Keyword(s):  
Flow Field ◽  
Dynamic Simulation ◽  
3D Flow

scholarly journals Moving Object Detection by 3D Flow Field Analysis

2021 ◽  
Vol 22 (4) ◽  
pp. 1950-1963
Author(s):  
Cansen Jiang ◽  
Danda Pani Paudel ◽  
David Fofi ◽  
Yohan Fougerolle ◽  
Cedric Demonceaux
Keyword(s):  
Flow Field ◽  
Object Detection ◽  
Moving Object Detection ◽  
Moving Object ◽  
Field Analysis ◽  
3D Flow ◽  
Flow Field Analysis

Dynamic Simulation of Fusion Process and Analysis of Flow Field

2008 ◽  
Vol 28 (9) ◽  
pp. 1049-1058 ◽  
Author(s):  
Supei Zheng ◽  
Jie Ouyang ◽  
Ling Zhang ◽  
Hongping Zhang
Keyword(s):  
Flow Field ◽  
Dynamic Simulation ◽  
Fusion Process

Investigation on Laminar Flow Field Performances in a Dual-Impeller Stirred Tank

2012 ◽  
Vol 550-553 ◽  
pp. 2964-2967
Author(s):  
De Yu Luan ◽  
Shen Jie Zhou ◽  
Song Ying Chen
Keyword(s):  
Laminar Flow ◽  
Flow Field ◽  
Velocity Distribution ◽  
Radial Velocity ◽  
Velocity Vector ◽  
Equations Of Motion ◽  
Stirred Tank ◽  
Field Pattern ◽  
3D Flow ◽  
Multiple Reference

Abstract: The 3D flow field generated by a dual-impeller in the agitation of glycerin fluid was simulated using the commercial CFD package. The flow was modeled as laminar and a multiple reference frame (MRF) approach was used to solve the discretized equations of motion. The velocity profiles with a dual-impeller rotating at constant speed of 200r/min and at different layer clearances were obtained. By analysis to their axial and radial velocity vector plots and velocity distribution curves, it is found that the velocity distributions of the dual 6-bladed radial disc turbines (2-6DT) are better when the clearance is bigger or equal to the T/2, accompanied with the flow field pattern of parallel flow. Moreover，when the clearance is smaller or equal to the T/3, there are more advantages for 6-bladed radial disc turbines + pitch 4-bladed turbines (6DT+PTB) than other combinations，followed by the flow field pattern of connected flow.

scholarly journals NUMERICAL SIMULATION OF THREE-DIMENSIONAL FLOW AROUND HARBOR DUE TO TSUNAMI USING FAVOR METHOD AND WENO SCHEME

2018 ◽  
pp. 71
Author(s):  
Yuki Kajikawa ◽  
Masamitsu Kuroiwa ◽  
Naohiro Otani
Keyword(s):  
Flow Field ◽  
Large Scale ◽  
Three Dimensional ◽  
Weno Scheme ◽  
Scale Model ◽  
Governing Equations ◽  
3D Flow ◽  
Complex Boundaries ◽  
Cartesian Coordinate ◽  
Fifth Order

In this paper, a three-dimensional (3D) tsunami flow model was proposed in order to predict a 3D flow field around a harbor accurately when tsunami strikes. In the proposed numerical model, the Cartesian coordinate system was adopted, and the Fractional Area/Volume Obstacle Representation (FAVOR) method, which has the ability to impose boundary conditions smoothly at complex boundaries, was introduced into the governing equations in consideration of applying the estimation to actual harbors with complex shape in the future. Moreover, the fifth-order Weighted Essentially Non- Oscillatory (WENO) scheme, which is a technique for achieving high accuracy even if the calculation mesh is coarse, was applied to discretization of the convection terms of the governing equations. In order to verify the validity of the model, it was applied to a large-scale laboratory experiment with a scale model of harbor. Comparisons between the simulated and experimental results showed that the model was able to reproduce the time variation of the flow field with sufficient accuracy. Moreover, the simulated results showed that a complex 3D flow field with some vertical vortex flows was generated around a harbor when tsunami struck.

3D Flow Field Analysis for a Traditional II+ PWR Containment Under Normal Condition

2014 ◽  
Author(s):  
Maolin Tian ◽  
Wenxi Tian ◽  
Guanghui Su ◽  
Suizheng Qiu
Keyword(s):  
Flow Field ◽  
Normal Condition ◽  
Ventilation System ◽  
Field Analysis ◽  
3D Flow ◽  
Ansys Fluent ◽  
Geometry Model ◽  
Flow Field Analysis ◽  
Actual Geometry ◽  
Ventilation Systems

Flow field analysis is a foundation to many thermal-dynamic phenomena in the nuclear containment. There are several ventilation systems under normal condition to assure the proper environment for staff and facilities, and the two main ventilation systems are the Reactor Pit Ventilation system (EVC) and the Containment Continuous Ventilation system (EVR). The fans of the ventilation systems recycle the air in the containment to various rooms, and cooling coils are cooled by the Nuclear Island Chilled Water system (DEG). In this paper, we simulated the 3D flow field in a Chinese traditional generation II+ PWR reactor containment under normal conditions with a commercial CFD software ANSYS FLUENT. According the actual geometry data of the reactor plant, we built the geometry model, including the EVC and EVR system, and they were checked by plant experts to assure authenticity. Proper maximum mesh sizes were set for different parts at the ICEM CFD, and the grid number was about ten millions. We used the fan model in the ANSYS FLUENT to simulate fans in the ventilations. The calculated values of flow rate in ventilation systems were in good agreement with the design values.

A method for dynamic simulation of rigid and flexible fibers in a flow field

1993 ◽  
Vol 98 (1) ◽  
pp. 644-650 ◽  
Author(s):  
Satoru Yamamoto ◽  
Takaaki Matsuoka
Keyword(s):  
Flow Field ◽  
Dynamic Simulation ◽  
Flexible Fibers

A Method for Predicting Inlet Temperature Distortion Caused by Missile Plumes

1995 ◽  
Author(s):  
Wang Shuo ◽  
Huang Xijun ◽  
Cui Jiya ◽  
Luo Changtian
Keyword(s):  
Flow Field ◽  
Total Pressure ◽  
Inlet Temperature ◽  
Quasi Steady State ◽  
3D Flow ◽  
External Compression ◽  
Inlet System ◽  
Pressure Distributions ◽  
Variation Rate ◽  
Total Temperature

In this paper we provide information for the design of a 3D external compression inlet system which is affected by the exhaust plume of a missile. The inlet 3D flow field has been simulated by 3D time dependent Euler equations and solved using the J. D. Denton scheme. The total temperature and total pressure distributions are obtained for a quasi–steady state and the temperature increment (DT) and its variation rate (RDT) are calculated. Two definitions of DT and RDT are given and a simple condition has been put forward for calculating the inlet flow field with serious upstream distortion. Finally, an attenuation law is presented which estimates the temperature distortion in the inlet duct from the inlet entrance to the exit for different conditions and different intervals.

FlowVisual: A Visualization App for Teaching and Understanding 3D Flow Field Concepts

2016 ◽  
Vol 2016 (1) ◽  
pp. 1-10
Author(s):  
Man Wang ◽  
Jun Tao ◽  
Jun Ma ◽  
Yang Shen ◽  
Chaoli Wang
Keyword(s):  
Flow Field ◽  
3D Flow
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