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Online since: May 2013
Authors: Liang Jiang, Tao Chen, Zhi Cheng He
Modeling and Simulation Basic Modeling.
The flow line toward simulation and wind tunnel tests are basically the same.Table2 shows drag coefficient values calculated during simulation and wind tunnel test.
Combined the wind tunnel test and CFD analysis, some changes have been done to get better aerodynamic characteristic shape.
The results showed that: (1) The flow field information obtained by CFD simulation and test results can match well.
On comparisons between CFD methods and wind tunnel tests on a bluff body, SAE1999- 01 -0805 [3] Menter F R, Multiscale Model for Turbulent Flows.
Online since: October 2010
Authors: Hai Yong Liu, Hong Fu Qiang
Numerical Simulation of Heat Transfer Characteristics for Two Metallic TPS Structures Haiyong Liu1,a , Hongfu Qiang2,b 1201 Section , Xi’an High-Tech Institute, Xi’an, China 2201 Section , Xi’an High-Tech Institute, Xi’an, China ahelian_xicheng@163.com, bQiang@263.net Keywords: Numerical simulation; Heat transfer characteristics; TPS; CFD software; Heat conductivity.
Numerical simulations were conducted on the three-dimensional TPS models using CFD software of Gambit and Fluent.
The results of simulation investigation showed that: The metallic layer had poor capability to restrict the heat conductivity.
That would be helpful to optimize the design of the TPS, extent the understanding of the CFD software, and improve and modify the heat transfer models for suitable utilization in the simulation under extremely high temperature.
This could be validated in further simulation with taking thermal radiation effect into consideration.
Online since: June 2014
Authors: Xiang Yao Meng, Zhi Ming Qiu, Peng Zhang
A new discrete chemical plume model based on CFD was established, which avoids the shortcomings of the current model.
Tianjin University, 2007. ] using Computational Fluid Dynamics (CFD), all are simplied to be easier sloved.
Three-dimensional simulation of pollutant dispersion in coastal waters[D].
Numerical simulation analysis of chemical plume Applying the discrete chemical plume model based on CFD, the turbulent flow was computed in the software FLUENT, while the final concentration distribution was computed using MATLAB.
The simulation results can serve as the basis of plume tracking algorithm research and simulation platform, which provides backgound for further research on chemical plume tracking.
Online since: August 2011
Authors: Michael C. Weismiller, Ioan Marinescu, Stefan Mihić, Sorin Cioc
The results agree well with experimental global flow rates and temperature values and show the feasibility of 3-D CFD-based simulations in grinding applications.
The fluid used in numerical simulation is water, with viscosity that linearly depends on temperature: 0.001002 Pa∙s at 20oC, and 0.000282 Pa∙s at 100oC.
Conclusions 3-D models created in this study proved the practicability of CFD based simulations in grinding.
Simulations using the proposed numerical models yielded detailed data and realistic fluid behavior.
The results of simulations matched useful flow rates, temperature, and pressure experimental data.
Online since: July 2011
Authors: Jung Hua Chou, Hsien Te Lin, Tzu Ching Su, Chun Han Chien
D student, Department of Architecture, National Cheng-Kung University, Tainan, Taiwan an78981133@mail.ncku.edu.tw, blinsiraya@yahoo.com.tw, cjungchou@mail.ncku.edu.tw, dneverending1984@hotmail.com Keywords: Buoyancy-driven ventilation, Cross ventilation, Passive solar chimney, CFD simulation Abstract.
Buoyancy-driven ventilation is designed in the conference hall of MSGT Fig.1 CFD simulation in the conference hall of MSGT A naturally ventilated conference hall in MSGT is used by designed utilizing a passive solar chimney.
Data from the MSGT meteorological station on the outdoor temperature, outdoor wind speed, outdoor wind direction, solar radiation, and relative humidity were used in the CFD simulation (Table 1).
Boundary conditions in terms of thermal comfort simulation CFD simulation results The experimental results and those obtained using the numerical model under the same climatic conditions indicates that the air exchange rate was 5.15 ACH (left side of Fig.2).
This value is very close to the simulated air exchange rate of 5.15 ACH, and within the instrumental error, proving that results of the CFD simulation of conference hall ventilation were accurate.
Online since: July 2015
Authors: Walter Berger, Robert Breyner, Hermann Maier
Detailed Heat Transfer Modelling & Optimisation of a Forced-Convection Kiln using CFD methods H.
Considering the real flow conditions in the kiln the simulation goal was to examine the flow conditions in the heating zone at the wire’s plane with respect to the key parameters gas velocity and temperature.
The CFD modelling of the kiln is based on a finite volume approach.
Regarding the computations the commercial CFD code AVL Fire was used which is well appropriated for the simulation & analysis of complicated flow phenomena considering complex flow domains [8].
A smoother distribution of the key parameters velocity and temperature could be found in the simulation of the final kiln design for both kiln units.
Online since: August 2015
Authors: R. Meenakshi Reddy, C. Uma Maheswari
CFD Analysis of a Solar Parabolic Dish C.
Simulation of the structural, thermal and CFD analysis of the dish with varying metallic properties (Aluminium, Copper and Stainless Steel) under different wind conditions was compared.
The results of our CFD analysis can also be verified by experimental investigation.
CFD analysis varies for the different fluid material according to their properties.
All of the simulations done in this study shows that solar parabolic dish has promise to compete with current solar technologies.
Online since: May 2012
Authors: Daryanto Daryanto
Software CFD simulations which is used to obtain a picture of heat transfer and air flow behavior in double envelope.
Tests performed on the CFD program models in simpler and smaller volumes to anticipate the failures in the process of CFD simulation software due to the large volume of buildings on the actual buildings.
Simulation Results Before performing the CFD simulations program on the research building objects, first of all the simulation is conducted on a simpler model and a smaller volume to anticipate the failures in the process of CFD simulation software, due to the large volume of the actual building.
The use of CFD simulation program provides more efficient DSF performance.
By field measurements and CFD simulation, there is a correlation of wind effect with heat transfer onto the building.
Online since: July 2014
Authors: Yan Ying Xing
Diffusion path.CFD.
This paper analysis gas diffusion path between two adjacent tunnels, using CFD (Ansys Fluent).
Tunnel exit section length 100m, width 80m, 50m high cubes simulation outside atmosphere.
By analyzing the simulation results, CO concentrations of upstream and downstream tunnel entrance tunnel exit were 150ppm, 55.3pmm.
After analyzing the results of numerical simulation, concentration of CO is 150ppm on tunnel exit portal, and concentration of CO is 23.6ppm on adjacent tunnel entrance. 
Online since: February 2018
Authors: Jang Youl You, Doo Kie Kim, Sun Young Paek, Ki Pyo You
The Wind Flow Characteristics Measuring Simulations of Soundproof Tunnels on Expressways Jang-Youl You1,a, Sun-Young Paek2,b, Doo-Kie Kim3,c and Ki-Pyo You4,d* 1Department of Architecture Engineering Songwon University, Gwangju, Korea 2Department of Architecture Engineering Chonbuk National University, Jeonju, Korea 3Department of Civil and Environmental Engineering, Kunsan National University, Kunsan, Korea 4Department of Architecture Engineering Chonbuk National University, Jeonju, Long-Span Steel Frame System Research Center Korea(Corresponding Author) ayou1877@songwon.ac.kr, bmsdona@jbnu.ac.kr, ckim2kie@kunsan.ac.kr, d,*youkp@jbnu.ac.kr Keywords: Wind flow, Soundproof Tunnel, Expressway, Measuring Simulation, CFD Abstract.
CFD Analysis CFD analysis was conducted to examine the wind velocity changes in apartments around the soundproof tunnels to be constructed on expressways.
Table 1 shows the boundary conditions of the CFD analysis.
Boundary conditions for CFD analysis.
Figs. 4 and 5 show the CFD analysis results pre- and post-installation.
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