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Online since: January 2014
Authors: Y.A. Sabtalistia, S.N.N. Ekasiwi, B. Iskandriawan
It can be done by analyzing ADPI (Air Diffusion Performance Index), the distribution of air temperature, wind speed, RH (Relative Humidity), and DR (Draft Risk) to change the position of the AC supply supported by CFD (Computational Fluid Dynamics) simulation.
Outside conditions and in the Research Sample No. 29 floor 16 (South Facade) Simulation experiments by CFD (Computational Fluid Dynamics) Gambit program FLUENT version 2.2.30 and version 12.12 Anysys used in this research model and simulate the calculation of air temperature, wind speed, air pressure, and turbulence intensity.
Modeling in CFD Post Table 1.
AC position on the AC system: (a) AC Position 1 (Experiment) and (b) AC Position 2 (Experiment) Tables 1 and 2 show the thermal properties and boundary condition on CFD simulation.
Selection of AC position based on the possibility of AC position and when simulated in the CFD simulations can convergen.
Outside conditions and in the Research Sample No. 29 floor 16 (South Facade) Simulation experiments by CFD (Computational Fluid Dynamics) Gambit program FLUENT version 2.2.30 and version 12.12 Anysys used in this research model and simulate the calculation of air temperature, wind speed, air pressure, and turbulence intensity.
Modeling in CFD Post Table 1.
AC position on the AC system: (a) AC Position 1 (Experiment) and (b) AC Position 2 (Experiment) Tables 1 and 2 show the thermal properties and boundary condition on CFD simulation.
Selection of AC position based on the possibility of AC position and when simulated in the CFD simulations can convergen.
Online since: November 2017
Authors: R.S. Santos, R. Moura da Silva, Morgana Vasconcellos Araújo, A.G. Barbosa de Lima
The Computational Fluid Dynamics (CFD) can be described in a generalized way as the numerical simulation of all those physical and / or physic-chemical processes that have flow.
There are some researches about drying brick using CFD; however, the works involving industrial hollow ceramic brick are scarce [8-11].
Both geometry and mesh were constructed using ICEM CFD 15.0 software.
This behavior is due to the low convective heat transfer coefficient obtained in the simulations.
Simulation and experimentation of the drying of drained ceramic bricks.
There are some researches about drying brick using CFD; however, the works involving industrial hollow ceramic brick are scarce [8-11].
Both geometry and mesh were constructed using ICEM CFD 15.0 software.
This behavior is due to the low convective heat transfer coefficient obtained in the simulations.
Simulation and experimentation of the drying of drained ceramic bricks.
Online since: July 2013
Authors: Sheng Long Wang, Wen Hao Li, Yin Hai Ge
The subcooled boiling phase transformation of ammonia in a horizontal pipe tube was simulated through the application of the CFD fluid computational platform, the fluid state parameters in the tube were given at the same time.
Model For the simulation phase change boiling, the key is establishing the correct model.
Set the solution conditions Using CFD computational fluid dynamics software to achieve the numerical simulation of liquid ammonia in a horizontal circular tube which occur phase transition.
A length of 24m, a radius of 10mm circular tube, simulation of liquid ammonia in the mobile phase transition.
The simulation results and analysis The variation of the tube velocity.
Model For the simulation phase change boiling, the key is establishing the correct model.
Set the solution conditions Using CFD computational fluid dynamics software to achieve the numerical simulation of liquid ammonia in a horizontal circular tube which occur phase transition.
A length of 24m, a radius of 10mm circular tube, simulation of liquid ammonia in the mobile phase transition.
The simulation results and analysis The variation of the tube velocity.
Online since: January 2016
Authors: Khalid M. Saqr, Ahmed el Gibaly, Omar Diaa, Tamer Hassan, Omar A. El-Bassiouny, Ali I. Shehata
The blood flow model used in CFD studies of cerebral aneurysms is a controversial topic.
The governing equations that was used to build the CFD model are the conservation equations for mass and momentum.
The general purpose CFD solver FLUENT by ANSYS was used to perform the numerical analysis presented herein.
Direct simulations of transitional flow in a patient-specific carotid bifurcation with stenosis. 2008.
Takao, H., et al., Analysis of cerebral aneurysms using Computational Fluid Dynamics (CFD).
The governing equations that was used to build the CFD model are the conservation equations for mass and momentum.
The general purpose CFD solver FLUENT by ANSYS was used to perform the numerical analysis presented herein.
Direct simulations of transitional flow in a patient-specific carotid bifurcation with stenosis. 2008.
Takao, H., et al., Analysis of cerebral aneurysms using Computational Fluid Dynamics (CFD).
Online since: March 2010
Authors: Shi Lin Yan, Hang Lu, Hua Tan, Zhong Qi Qiu
The
key of success of simulation of the process of LCM technology is the veracity of materiel parameters,
which are used for the simulation [3, 4].
Costing much time is the disadvantage of the experimental methods, so computational fluid dynamics (CFD) technology is used by some scholars for measuring permeability.
Through using the FLOTRAN CFD module of ANSYS, the simulation of porous medium property of each fiber bundle can be implemented.
The permeability of fiber bundle is given in the process of the simulation.
It is very useful for the further research of the simulation of the LCM process.
Costing much time is the disadvantage of the experimental methods, so computational fluid dynamics (CFD) technology is used by some scholars for measuring permeability.
Through using the FLOTRAN CFD module of ANSYS, the simulation of porous medium property of each fiber bundle can be implemented.
The permeability of fiber bundle is given in the process of the simulation.
It is very useful for the further research of the simulation of the LCM process.
Online since: July 2013
Authors: Tiina M. Pääkkönen, Ulla Ojaniemi, Carey J. Simonson, Markus Riihimäki, Esa Muurinen, Riitta L. Keiski
CFD modelling is used to study hydrodynamic and thermal conditions near surfaces with different patterns.
Modeling CFD Model.
CFD simulations of the pattern C showed that fouling seems to be reduced at the convex areas of the studied surface pattern due to increased shear forces and lowered surface temperature.
In addition, numerical simulation of particulate resuspension showed that removal from the pattern C is more efficient.
Therefore, the reduced fouling rate seen in the experimental results of the pattern C may be explained by the simulation results.
Modeling CFD Model.
CFD simulations of the pattern C showed that fouling seems to be reduced at the convex areas of the studied surface pattern due to increased shear forces and lowered surface temperature.
In addition, numerical simulation of particulate resuspension showed that removal from the pattern C is more efficient.
Therefore, the reduced fouling rate seen in the experimental results of the pattern C may be explained by the simulation results.
Online since: October 2014
Authors: Shahrum Abdullah, Che Husna Azhari, Mohd Rasidi Rasani, Mariyam Jameelah Ghazali, Zambri Harun, Wan Mohd Faizal Wan Mahmood, Rozli Zulkifli, Muhammad Syafiq, Mohd Radzi Abu Mansor, Zulkhairi Zainol Abidin, Ashraf Amer Abbas
CFD simulation was done using STAR CCM+7.04.006 (64-bit version) software.
Table 2 summarizes the properties of mesh used in author’s CFD analysis.
The skin friction coefficient is obtained from CFD analysis.
For example, Ref. [2] shows that their APG flow has the least skin friction, however the APG section in this simulation has the largest skin friction.
Acknowledgements The authors would like to thank UKM-Perodua grant for the development of the car and FRGS/1/2013/TK01/UKM/03/1 for detailed CFD simulations.
Table 2 summarizes the properties of mesh used in author’s CFD analysis.
The skin friction coefficient is obtained from CFD analysis.
For example, Ref. [2] shows that their APG flow has the least skin friction, however the APG section in this simulation has the largest skin friction.
Acknowledgements The authors would like to thank UKM-Perodua grant for the development of the car and FRGS/1/2013/TK01/UKM/03/1 for detailed CFD simulations.
Online since: November 2014
Authors: Dominicus Danardono, Ki Seong Kim
Mixing Quality Improvement of a Coaxial Syngas Mixer by Adding Optimized Mechanical Tabs Using Three-Dimensional CFD Modeling
Dominicus Danardono1,a*, Ki-Seong Kim1,b
1Department of Mechanical Design Engineering, Chonnam National University, Jeonnam 550-749, Korea
adanar1405@uns.ac.id , bsngkim@chonnam.ac.kr
Keywords: Air-fuel ratio; pressure loss; mixing quality; mechanical tabs; coaxial syngas mixer; CFD.
Numbers of iteration were conducted by refining the mesh in every stage of simulation.
After several simulations, it was found that the model would have consistency in result if the mesh consist grid cells more than about 480,000 cells.
In this study, the grid cell volume used in the CFD simulation was set for about 500,000 cells.
Chung, Investigation on hydrodynamics and mass transfer characteristics of a gas-liquid ejector using three-dimensional CFD modeling, Journal of Mechanical Science and Technology. 22 (2008) 1821-1829
Numbers of iteration were conducted by refining the mesh in every stage of simulation.
After several simulations, it was found that the model would have consistency in result if the mesh consist grid cells more than about 480,000 cells.
In this study, the grid cell volume used in the CFD simulation was set for about 500,000 cells.
Chung, Investigation on hydrodynamics and mass transfer characteristics of a gas-liquid ejector using three-dimensional CFD modeling, Journal of Mechanical Science and Technology. 22 (2008) 1821-1829
Online since: December 2014
Authors: Jue Ding, Zhong Jie Wang, Pei Feng Weng
The Numerical Prediction and Safety Analysis of Alternative Fuels Leakage Accident during Storage and Transportation
Zhongjie Wang1,a, Jue Ding1,b and Peifeng Weng1,c
1Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai, China
awzj630@163.com , bdingjue_lu@shu.edu.cn, cpfweng@mail.shu.edu.cn
Keywords: Alternative Fuels, Leakage Accident, Fuel Diffusion, CFD, Safety Analysis
Abstract.
By using the methods which combines safety system engineering and Computational Fluid Dynamics (CFD), the diffusion process of fuels leakage, and the damage area were analyzed quantitatively.
According to the CFD method and the safety engineering theory, the mathematical and physical models are established.
The processes of fuel leakage and diffusion are predicted by CFD method, then the damage area assessment is used to analyze fireball's heat radiation and the explosion risk of vapor cloud.
China Engineering Science. 2006, 8(4): 46-47 (In Chinese) [3] State Administration of Production Safety Supervision, in: Safety Assessment, edited by Coal Industry Publisher ( 2005) [4] Lixing Zhou, in: Turbulence Two Phase Flow and Numerical Simulation of Combustion, edited by Tsinghua University Press (1991) [5] Ping Li, Jue Ding.
By using the methods which combines safety system engineering and Computational Fluid Dynamics (CFD), the diffusion process of fuels leakage, and the damage area were analyzed quantitatively.
According to the CFD method and the safety engineering theory, the mathematical and physical models are established.
The processes of fuel leakage and diffusion are predicted by CFD method, then the damage area assessment is used to analyze fireball's heat radiation and the explosion risk of vapor cloud.
China Engineering Science. 2006, 8(4): 46-47 (In Chinese) [3] State Administration of Production Safety Supervision, in: Safety Assessment, edited by Coal Industry Publisher ( 2005) [4] Lixing Zhou, in: Turbulence Two Phase Flow and Numerical Simulation of Combustion, edited by Tsinghua University Press (1991) [5] Ping Li, Jue Ding.
Online since: September 2014
Authors: Kian Meng Yap, Tiam Hee Tee, Kok Seng Eu
In order to make sure the quadrotor based flying sniffer robot can perform well in odor plumes tracking, we have carried out a detail study in airflow simulation analysis by using Computational Fluid Dynamics (CFD) software.
A thorough study on aerodynamics and airflow analysis of a quadrotor in simulation has been carried out.
Computational Fluid Dynamics (CFD) software has been used to get the simulation results of the airflow analysis.
Fig. 5. 3D model of a quadrotor with exact dimension Discussion of Results The airflow analysis simulation results are shown in Fig 6 (a)-(e).
Odorant concentration (%) VS distance D, height ΔH, & Angle θ Conclusions The detail study in airflow simulation analysis by using Computational Fluid Dynamics (CFD) software has been carried out.
A thorough study on aerodynamics and airflow analysis of a quadrotor in simulation has been carried out.
Computational Fluid Dynamics (CFD) software has been used to get the simulation results of the airflow analysis.
Fig. 5. 3D model of a quadrotor with exact dimension Discussion of Results The airflow analysis simulation results are shown in Fig 6 (a)-(e).
Odorant concentration (%) VS distance D, height ΔH, & Angle θ Conclusions The detail study in airflow simulation analysis by using Computational Fluid Dynamics (CFD) software has been carried out.