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Online since: January 2015
Authors: Hai Ying Wang, Liang Xu, Zhi Gang Song
Dynamic analysis of pedestrian bridges with pedestrian bridges with FEM and CFD [J].
Modelling and simulation of human-floor system under vertical vibration [C], in: Proceedings of SPIE, Smart Structures and Materials, Vol. 4327, March 5–8, Newport Beach, CA, USA, 2001, 513–520
[17] Quqiang Hu, Study of Crowd Load Model Based on Pedestrian Flow Simulation, Yunnan: A Dissertation Presented to Kunming University of Science and Technology for Master Degree of Engineering, 3-8
Simulation of pedestrian dynamics using a two-dimensional cellular automaton [J].
Online since: May 2014
Authors: N. Thai-Quang, C. D. Tran, T. Tran-Cong, C.M.T. Tien, N. Mai-Duy
Introduction In computational fluid dynamics (CFD), the velocity-pressure formulation can be discretized through the segregated and fully coupled approaches.
This paper presents a fully coupled approach for the fluid flow simulation with the field variables being approximated on uniform/non-uniform Cartesian grids by the CIRBF approximation scheme [2].
Conclusions In this paper, we introduce high-order compact integrated RBF approximations into a fully coupled approach for the numerical simulation of viscous flows governed by the velocity-pressure formulation.
Application to direct numerical simulations of compressible flows, Int.
Online since: August 2013
Authors: Ping Dai, Nai Yun Yu
Many studies have shown that aerodynamic loss of converging slot-hole is low, film covering a wide range in the upstream region, high cooling efficiency, but because of the existence of processing technology difficult problem, at present only at the simulation stage, has not yet formally put into use.
The cylindrical hole, forward diffused hole and the crescent hole are studied by numerical simulation in the use of commercial CFD software FLUENT at the blowing ratio of 0.5 and 1 of the cases.
Fig.4 Configurations of crescent hole Fig.5 Average film cooling effectiveness of different holes at downstream Research on other new film cooling structure With the development of new efficient gas film cooling holes extensively, Kusterer et al. [18] presents a double jet film cooling way in 2006, pass structure of double jet by two opposite circular composite angles and the numerical simulation results show that the arrangement of double jet special makes jet and mainstream interaction a pair of the reverse kidney shape vortex, inhibition of jet and the wall of separation, improve the film cooling effectiveness, as shown in figure 8.
Online since: September 2023
Authors: Ujjal Kalita, Rahul Singhal, Clevin Toppo, Rupak Biswakarma, Pratap Roy, Sristy Sahu
For simulation & analysis of the Impeller, a Large Eddy Simulation could be done to validate the flow in cavitating & non-cavitating conditions (Nobuhiro Yamanishi, 2003). 3.2 Pumps The pump is the assembly of the volute casing & the impeller inducer.
Cfd Simulation Of A Turbopump Inducer. 39th Aiaa/Asme/Sae/Asee Joint Propulsion Conference And Exhibit.
Online since: August 2013
Authors: Ping Dai, Nai Yun Yu
Numerical Study on Film Cooling Effectiveness from Converging Slot-hole Dai Ping1a, Yu Naiyun1b 1College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China aemail:daiping936@163.com, bemail:25352638@qq.com Keywords: Turbine blade; Converging slot-hole; Film cooling effectiveness; Turbulence model; Numerical simulation Abstract.
Numerical Simulation Methods Turbulence Models.
For the numerical investigation the commercial CFD software FLUENT is applied.
Online since: November 2017
Authors: Miguel Vaz Jr., L.H. Perão, Paulo S.B. Zdanski
Turbulent fluid flow and conjugate heat transfer are assumed in the simulations.
The present simulation shows good approximation in both regions; however the SST formulation was not able to capture the maximum values of k/(ut)2, as predicted by DNS [13].
For the range of number of elements studied, the simulations show very small variations of the maximum kinetic energy, k, and its corresponding dimensionless measure, k/(ut)2.
The simulations show that high blockage ratio leads to equally high local heat transfer across the solid-fluid interface at the upper and lower channel walls.
Wilcox, Turbulence Modeling for CFD, third ed., DCW industries, La Cañada, 2008
Online since: August 2019
Authors: Cicero C. de Escobar, Priscila M. Rodrigues, Elizaldo Domingues dos Santos, Liércio André Isoldi, Luiz Alberto Oliveira Rocha
Figure 2: Flowchart of performed simulations.
Numerical Modeling For the numerical simulations, all geometries and meshes were constructed with the open source program Gmsh 2.16.0, in which the domain is discretized in finite rectangular volumes.
The commercial CFD package FLUENT® [10 - 11] based on Finite Volume Method is used to solve Eqs. (1) – (4) for different fin configurations (H1/L1 and H2/L2) and fluid properties shown in Table 1.
Table 1: Fluid properties applied in simulations.
Online since: December 2010
Authors: Bor Jang Tsai, Koo David Huang, Chien Ho Lee
Then the analytic model of original ABE system has to be revised and analytic solution will be resulted and verified by the numerical solution of CFD.
This study has the simulation analysis and experimental proof by the reduced size model.
The model used is in a steady state condition in order to simplify the ABE system air-flow simulation procedure.
Fig.7 The numerical simulation of computational domains Verification of the numerical grids (Fig. 8, Fig. 9): in the same the settings conducted analysis of independent grid.
Temperature simulation results Fig. 11 is the comparison of temperature distribution for the fan was on (above) and off (below).
Online since: January 2015
Authors: Fu Qianag Cheng, Shuai Zhang, Guang Hong, Dong Yu Zhang
Fig. 5 shows their CFD and experimental results in which the oblique shocks moved towards lip with large scope obviously, after the MHD interactions.
Macheret’s simulation studies[17], Vatazhin’s theory analyses [18], Kuranov’s calculations [19], proved MHD control for improving shocks structure, enhancement of capturing and compression ratio under off-design Mach. 2.2 Near surface flow control When compared with large scale flow control, the near surface flow control aims at local issues, which is easy to demonstrate, and requires relatively low magnetic intensity, facility power and volume.
Online since: November 2010
Authors: Xu Yu, Biao Yuan
Simulation Analysis for Reasons of Energy Saving The conditions of the model are showed as follows: room 8×12×3m3, environment temperature 35°C, set temperature 26°C, 24 workers in the room.
Through CFD (Computational Fluid Dynamics) analysis, the layout of inner temperature fields of local air-conditioning and new air- conditioning systems in cooling conditions and with different numbers of workers can be obtained: Fig. 3.
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