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Online since: December 2014
Authors: Jian Qiao Yu, Yuan Chuan Shen, Rui Guang Yang
This paper is based on a preliminary design and modeling of a 2-D CFD-based model of a generic vehicle.
Simulations The feature point which selected in this paper is shown in Table 2[8].
Simulations The feature point which selected in this paper is shown in Table 2[8].
Online since: June 2012
Authors: Chao Heng Chien, Yung Chou Chen, Yu Sz Lin
Simulation
The CFD-ACE is applied to simulate the relationship between the electrodes and the field in a DEP chip.
Online since: November 2003
Authors: Bo Young Hur, Xiangying Zhu
With the rapid development of computer technology in recent decades, applications of
computational fluid dynamics (CFD) have been speeding up in a variety of industries.
Simulations with different conditions were performed as shown in Table 2.
Performed simulations with different conditions.
The results of computer simulations.
Compared with simulation 3, infiltration time is reduced with 17.6%.
Simulations with different conditions were performed as shown in Table 2.
Performed simulations with different conditions.
The results of computer simulations.
Compared with simulation 3, infiltration time is reduced with 17.6%.
Online since: February 2013
Authors: Jin Fa Xie, Hong Chao Wang
At present, the structural analysis on the noise barrier of high-speed railway at home and abroad have been developed very well, including the theoretical researches and numerical simulations.
To increase the simulation efficiency, the model must be simplified to some extent, such as getting rid of the pantograph and shortening the body-length.
Analysis Procedure This simulation need to transfer the result of fluid analysis as load to the structural analysis module, however, the structural deformation is so little compared to the whole computed field that the influence to fluid can be neglected, so this simulation belongs to the one-way FSI.
Secondly, the simulation could be carried on followed the constraints and loads are applied on the model of noise barrier, after the dynamic analysis finished, the simulation will step into the modal analysis to solve the modal distribution of noise barrier. 3.
Numerical Simulation and Analysis of High-Speed Railway Noise Barrier Aerodynamic Pressure.
To increase the simulation efficiency, the model must be simplified to some extent, such as getting rid of the pantograph and shortening the body-length.
Analysis Procedure This simulation need to transfer the result of fluid analysis as load to the structural analysis module, however, the structural deformation is so little compared to the whole computed field that the influence to fluid can be neglected, so this simulation belongs to the one-way FSI.
Secondly, the simulation could be carried on followed the constraints and loads are applied on the model of noise barrier, after the dynamic analysis finished, the simulation will step into the modal analysis to solve the modal distribution of noise barrier. 3.
Numerical Simulation and Analysis of High-Speed Railway Noise Barrier Aerodynamic Pressure.
Online since: January 2016
Authors: Miloš Kalousek, Martin Němeček
Comparative numerical simulation was also carried out.
Comparative simulation of the summer thermal stability The experimental measurements in the house at Moravany served as a basis for comparative numerical simulation within the validation procedure of computer software.
Results and evaluation of simulation The resulting values of internal air temperatures in the executed simulation, as compared with the actually measured data, appear to be satisfactory.
In the case of both studios 1.04 the difference between simulation and measurement is larger.
Opening the windows was not part of the simulation model; the simulation tool Energy Plus does not provide any simulation of air flow (CFD).
Comparative simulation of the summer thermal stability The experimental measurements in the house at Moravany served as a basis for comparative numerical simulation within the validation procedure of computer software.
Results and evaluation of simulation The resulting values of internal air temperatures in the executed simulation, as compared with the actually measured data, appear to be satisfactory.
In the case of both studios 1.04 the difference between simulation and measurement is larger.
Opening the windows was not part of the simulation model; the simulation tool Energy Plus does not provide any simulation of air flow (CFD).
Online since: September 2013
Authors: Xu Dong Zeng, Jing Yang Wang, Xin Sun
With the help of BIM technology, we can simulation analysis of the ambient temperature, the age of air, wind speed and wind pressure, soughting to a method of quantitative analysis of mountain traditional houses, and the design of ecological energy-saving.
The most critical step is to translate model informations into identified eco-energy saving software (CFD, EnergyPlus, dest, Doe-plus ,Ecotect etc.).
After the simulation, architects apply the final data to optimize and reflected in the BIM models.
According to the meteorological data of Chongqing, simulation analysis of wind environment (air age, velocity and wind pressure) and get the flow pattern of air, then adjust.
Its powerful information management capabilities provide a methodological foundation for a variety of related simulation and analysis.
The most critical step is to translate model informations into identified eco-energy saving software (CFD, EnergyPlus, dest, Doe-plus ,Ecotect etc.).
After the simulation, architects apply the final data to optimize and reflected in the BIM models.
According to the meteorological data of Chongqing, simulation analysis of wind environment (air age, velocity and wind pressure) and get the flow pattern of air, then adjust.
Its powerful information management capabilities provide a methodological foundation for a variety of related simulation and analysis.
Online since: February 2014
Authors: Rui Qing Chen, Yi Wei Lu, Jiang Feng Mou
The experiment show that the direct injection engine lean burn limit can increase 1.8 ~ 2.5 AFR unit.
1 Calculation model
In order to verify the simulation accuracy, the combination of 3D simulation and steady flow test bench is shown in figure 1.
According to the GDI-4G15 gasoline engine meshing scheme, we use AVL-FIRE software to simulation the oil and gas mixing process in cylinder.
On the basis of the above boundary conditions, this paper develop the numerical simulation of the compound injection system.
New Approach to Turbocharger Optimization using 1-D Simulation Tools[C].
CFD Investigation of Wall Wetting in a GDI Engine under Low Temperature Cranking Operations[C].
According to the GDI-4G15 gasoline engine meshing scheme, we use AVL-FIRE software to simulation the oil and gas mixing process in cylinder.
On the basis of the above boundary conditions, this paper develop the numerical simulation of the compound injection system.
New Approach to Turbocharger Optimization using 1-D Simulation Tools[C].
CFD Investigation of Wall Wetting in a GDI Engine under Low Temperature Cranking Operations[C].
Online since: April 2022
Authors: Wawan Aries Widodo, Setyo S.P. Hariyadi, Bambang Junipitoyo, Imam Sonhaji, Fungky Dyan Pertiwi
This research was conducted with numerical simulations on wing airfoil NACA 43018.
Simulation Domain and Boundary Conditions.
Domain Simulation a.
One of the considerations in performing numerical simulations is the time and memory used, so the meshing used for the next simulation is Meshing A.
Badrya, Title of dissertation : CFD / Quasi-Steady Coupled Trim Analysis of Diptera -type Flapping Wing MAV in Steady Flight Department of Aerospace Engineering, (2016)
Simulation Domain and Boundary Conditions.
Domain Simulation a.
One of the considerations in performing numerical simulations is the time and memory used, so the meshing used for the next simulation is Meshing A.
Badrya, Title of dissertation : CFD / Quasi-Steady Coupled Trim Analysis of Diptera -type Flapping Wing MAV in Steady Flight Department of Aerospace Engineering, (2016)
Online since: May 2015
Authors: Nik Fazli Sapian, Ahmad Rasdan Ismail, Wan Azlina Wan Ismail, Khairul Azhar bin Mat Daud
As a result form the Computational Fluid Dynamic (CFD) simulation, shows that by maintaining a 2 m head, the cross-flow turbine power output can achieve 1700 watt at 50 L/s flow rate and 700 watt at 40 L/s for axial-flow turbine.
M. et al. (2011) Independent small reservoir 1700 watt Test-rig and CFD simulation Haidar, Ahmed et al. (2011) Headwater reservoir 2850 watt Installed at UMP H.
M. et al. (2011) Independent small reservoir 1700 watt Test-rig and CFD simulation Haidar, Ahmed et al. (2011) Headwater reservoir 2850 watt Installed at UMP H.
Online since: October 2014
Authors: Harijono Djojodihardjo, Fadilah Hasim, Surjatin Wiriadidjaja, Faizal Mustapha, Tabrej Khan, Azmin Shakrine Mohd Rafie
Figure 1: UPM - LST [1]
Figure 2: Layout of the new UPM Closed Circuit Wind Tunnel [2]
Methodology of the Wind Tunnel Design Analysis
Since the results of computational fluid dynamic calculation (CFD) would need validation, all design products in engineering sense would also require verification.
This question may be answered, for example, by carrying out the following simulation.
High-lift devices such as flaps are usually developed in wind tunnels and supplemented by extensive CFD’s works.
Table 1 shows a simulation that is made to calculate the Reynolds number of test models of the assumed LSA, where it is further assumed that the test would be conducted in two wind tunnels of different sizes, i.e. in 1´1 m2 and in 3´2 m2 at two different wind speeds, 50 m/s and 80 m/s, and on three different model types, i.e. 2-dimensional airfoil model, 3-dimensional half model and 3-dimensional full model.
This question may be answered, for example, by carrying out the following simulation.
High-lift devices such as flaps are usually developed in wind tunnels and supplemented by extensive CFD’s works.
Table 1 shows a simulation that is made to calculate the Reynolds number of test models of the assumed LSA, where it is further assumed that the test would be conducted in two wind tunnels of different sizes, i.e. in 1´1 m2 and in 3´2 m2 at two different wind speeds, 50 m/s and 80 m/s, and on three different model types, i.e. 2-dimensional airfoil model, 3-dimensional half model and 3-dimensional full model.