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Online since: January 2013
Authors: Ji Wu Yuan, Zheng Wang, Xiang Di Zhao
With the Computational Fluid Dynamics analysis techniques become more sophisticated, the study on the application for explosion based on CFD have increasingly gained wide attention in industry and academia.
P.Hoorelbeke et al. got a summary analysis for the commonly used in explosion risk assessment techniques, and gave the latest research on risk assessment of explosion using CFD technology [9].
However, there is only a little study on numerical simulation model of explosion mitigation with water spray.
The total size of simulation is 100m × 80m × 40m.
Shapes of the equipment were modified according to the need for simulation.
P.Hoorelbeke et al. got a summary analysis for the commonly used in explosion risk assessment techniques, and gave the latest research on risk assessment of explosion using CFD technology [9].
However, there is only a little study on numerical simulation model of explosion mitigation with water spray.
The total size of simulation is 100m × 80m × 40m.
Shapes of the equipment were modified according to the need for simulation.
Online since: June 2014
Authors: Shu Zhong Wang, Lin Chen, Hai Yu Meng, Zhi Qiang Wu, Jun Zhao, Lu Zhou
In order to get insights into the heat transfer of supercritical LNG, numerical simulations were carried out in this paper for investigating heat transfer of LNG in horizontal circular tubes under supercritical pressure.
The accuracy of numerical simulations of heat transfer in supercritical fluid may depend on turbulence models.
Previous CFD study [1] using the Fluent code revealed the RNG turbulence model gives reasonable results in predicting heat transfer of supercritical water, therefore the RNG turbulence model was used in this study. u is the velocity vector, while is velocity component in special direction .
Numerical computations were carried out using the popular CFD package Fluent 6.3.26 [3].
Fig. 3 Velocity distributions on the tube symmetric plane Fig. 4 Pressure distributions on the tube symmetric plane Conclusions Three-dimensional computational fluid dynamics (CFD) based modeling and simulation have been conducted to investigate the heat transfer and flow performances of supercritical LNG in the horizontal circular tubes for application in LNG vaporization.
The accuracy of numerical simulations of heat transfer in supercritical fluid may depend on turbulence models.
Previous CFD study [1] using the Fluent code revealed the RNG turbulence model gives reasonable results in predicting heat transfer of supercritical water, therefore the RNG turbulence model was used in this study. u is the velocity vector, while is velocity component in special direction .
Numerical computations were carried out using the popular CFD package Fluent 6.3.26 [3].
Fig. 3 Velocity distributions on the tube symmetric plane Fig. 4 Pressure distributions on the tube symmetric plane Conclusions Three-dimensional computational fluid dynamics (CFD) based modeling and simulation have been conducted to investigate the heat transfer and flow performances of supercritical LNG in the horizontal circular tubes for application in LNG vaporization.
Online since: August 2010
Authors: Da Min Cao, Hong Yang Lv, Xing Yuan Zhang, Sheng Bin Hu
The 2-D internal steady flow of the scramjet inlet-isolator was numerically simulated by
the CFD method.
The numerical simulation results of two kinds of reasons which make the inlet un-start are obtained.
Abundant of flow simulation and experimental research work of the inlet-isolator has been done at home and abroad.
By experimental data and numerical simulation results to the comparison, using the numerical simulation method can better capture the inlet - shock isolator system structure, indicating consistent with the experimental results.
Two-Dimensional Viscous Simulation of a Inlet-isolator flows at Mach Number 4.
The numerical simulation results of two kinds of reasons which make the inlet un-start are obtained.
Abundant of flow simulation and experimental research work of the inlet-isolator has been done at home and abroad.
By experimental data and numerical simulation results to the comparison, using the numerical simulation method can better capture the inlet - shock isolator system structure, indicating consistent with the experimental results.
Two-Dimensional Viscous Simulation of a Inlet-isolator flows at Mach Number 4.
Online since: September 2012
Authors: Jun Wang, Cui Lian Che, Chuan Zhen Huang, Zhe Lv, Hong Tao Zhu
In addition, an experiment under the similar conditions of the simulation is conducted and the results are compared with that of the simulation.
Simulation procedure The simulation is performed with the FLUENT 6.3 package.
The simulation starts from where the jet exits the nozzle.
Simulation results and discussions.
Conclusions In this paper, a 3D CFD simulation on fluid field at different impact angles has been undertaken.
Simulation procedure The simulation is performed with the FLUENT 6.3 package.
The simulation starts from where the jet exits the nozzle.
Simulation results and discussions.
Conclusions In this paper, a 3D CFD simulation on fluid field at different impact angles has been undertaken.
Online since: May 2013
Authors: Qi Dou Zhou, Xiao Jun Lv, Zhi Yong Xie
Using CFD software, the mean wake fraction and thrust deduction fraction are obtained by simulating the flow field around submarine with equally distributed body force adopted to simulate the affection of propeller.
With the development of computer technology, CFD simulation of submarine powering performance in the numerical towing tank has been developed and validated[1], and the three dimensional body forces were also adopted to model the affection of the guide vane and propeller[2].
The objective of this work is to study the numerical method for prediction of submarine powering performance without knowing propeller force by using CFD software.
Numerical simulation of submarine self-propulsion test In order to study the submarine powering performance, the propeller 4118[3] is installed to the stern hull of SUBOFF AFF-8[4] submarine model, as shown in Fig. 1, and the axial installation position is z/L=0.9639, where is the length of the submarine model.
With the development of computer technology, CFD simulation of submarine powering performance in the numerical towing tank has been developed and validated[1], and the three dimensional body forces were also adopted to model the affection of the guide vane and propeller[2].
The objective of this work is to study the numerical method for prediction of submarine powering performance without knowing propeller force by using CFD software.
Numerical simulation of submarine self-propulsion test In order to study the submarine powering performance, the propeller 4118[3] is installed to the stern hull of SUBOFF AFF-8[4] submarine model, as shown in Fig. 1, and the axial installation position is z/L=0.9639, where is the length of the submarine model.
Online since: December 2014
Authors: Xi Luo, Ming Li, Qiong Fen Yu, Yong Feng Xu, Cong Bin Leng, Yu Qiu
E-mall address: liming@ynnu.edu.cn(Ming Li)
Keywords: Phase change energy storage; Melting; numerical simulation.
The thermal storage process of new heat exchanger and shell-and-tube heat exchanger which use paraffin as phase change material and use water as heat-transfer fluid can be simulated by CFD software, respectively.
Conclusions A novel heat exchanger was designed, and its thermal performance was studied by CFD software in this paper.
(In Chinese) [4] Dongsheng Zhu, Ting Xu, Shuo Yang.numerical simulation of fin-tube heat pump with phase change thermal storage[J]. fluid machinery, 2011, 39(6):53-58.
[8] Weibiao Ye, Dongsheng Zhu, Nan Wang, Numerical simulation on phase-change thermal storage/release in a plate-fin unit[J], Applied Thermal Engineering, 2011, 31(17):3871-3884.
The thermal storage process of new heat exchanger and shell-and-tube heat exchanger which use paraffin as phase change material and use water as heat-transfer fluid can be simulated by CFD software, respectively.
Conclusions A novel heat exchanger was designed, and its thermal performance was studied by CFD software in this paper.
(In Chinese) [4] Dongsheng Zhu, Ting Xu, Shuo Yang.numerical simulation of fin-tube heat pump with phase change thermal storage[J]. fluid machinery, 2011, 39(6):53-58.
[8] Weibiao Ye, Dongsheng Zhu, Nan Wang, Numerical simulation on phase-change thermal storage/release in a plate-fin unit[J], Applied Thermal Engineering, 2011, 31(17):3871-3884.
Online since: May 2014
Authors: Hong Liang Yu, Feng Shuo Xing, Shu Lin Duan
Numerical Simulation of Diesel Ignited Natural Gas Engine Based on the Finite Volume Method
Yu Hongliang1, a *, Xing Fengsuo1, b,Duan Shulin2,c
1 Dalian Ocean University, Dalian, Liaoning, 116023, China
2 Dalian Maritime University, Dalian, Liaoning, 116026, China
ayuhongliang19852@163.com,bxingfengshuo@dlou.edu.cn,cduanshulin99@yahoo.com.cn
Keywords: the Finite Volume Method,Natural Gas Engine,Numerical Simulation,Diesel Ignited
Abstract.
This paper built a finite volume combustion model of Diesel ignited natural gas engine by AVL FIRE software, based on the finite volume method and a natural gas engine emissions test data, then numerical simulation of the combustion process that the diesel ignited natural gas was carried and analyzed the combustion and emission characteristics of natural gas engines.
K-zeta-f two-equation turbulence model was selected to simulate cylinder flow field of the internal combustion engine in the CFD software[2,3].
In this paper, the object of simulation was a marine diese ignited natural gas engine.
CFD in IC- engine spray and combustion simulation: Current status and future development.
This paper built a finite volume combustion model of Diesel ignited natural gas engine by AVL FIRE software, based on the finite volume method and a natural gas engine emissions test data, then numerical simulation of the combustion process that the diesel ignited natural gas was carried and analyzed the combustion and emission characteristics of natural gas engines.
K-zeta-f two-equation turbulence model was selected to simulate cylinder flow field of the internal combustion engine in the CFD software[2,3].
In this paper, the object of simulation was a marine diese ignited natural gas engine.
CFD in IC- engine spray and combustion simulation: Current status and future development.
Online since: June 2014
Authors: Sheng Huang, Xiang Li, Chong Wang
Therefore, the numerical simulation of air-wake around decks is very important for the development of large warships during the war.
Introduction There are three ways to study the air-wake around ships, full scale measurement, wind tunnel test and numerical simulation.
CFD method has solved the drawbacks with the development of the computer technology.
In the study of the air-wake around large warship deck, the CFD method will be more and more widely used with the improvement of the counting ability.
Reference [1] Qu Fei, Lu Chao and Jiang Zhi-fang,CFD Numerical simulation of ship airwake, Chinese Journal of Ship Research, vol. 4., pp.23–27,October 2009
Introduction There are three ways to study the air-wake around ships, full scale measurement, wind tunnel test and numerical simulation.
CFD method has solved the drawbacks with the development of the computer technology.
In the study of the air-wake around large warship deck, the CFD method will be more and more widely used with the improvement of the counting ability.
Reference [1] Qu Fei, Lu Chao and Jiang Zhi-fang,CFD Numerical simulation of ship airwake, Chinese Journal of Ship Research, vol. 4., pp.23–27,October 2009
Online since: October 2013
Authors: Cun Ming Ma, Qing Song Duan
Based on FLUENT numerical simulation, the effect of windscreens on wind resistant capability of the running trains is studied and the economic and effective countermeasures of the wind-resistant problems are put forward.
Aerodynamic Optimization of the Bridge Windscreen Computational Analysis of the Two Dimensional CFD.
Only unilateral windscreen is studied in the three-dimensional simulation.
Fig. 7 Wind critical overturning speed of the train Conclusions Based on CFD simulation of the windscreen, it could be concluded as follows: (1) The drag coefficient and the moment coefficient are key parameters to estimate the stability of the train under the action of wind.
Computational fluid dynamics analysis-principle and application of CFD software [M].
Aerodynamic Optimization of the Bridge Windscreen Computational Analysis of the Two Dimensional CFD.
Only unilateral windscreen is studied in the three-dimensional simulation.
Fig. 7 Wind critical overturning speed of the train Conclusions Based on CFD simulation of the windscreen, it could be concluded as follows: (1) The drag coefficient and the moment coefficient are key parameters to estimate the stability of the train under the action of wind.
Computational fluid dynamics analysis-principle and application of CFD software [M].
Online since: September 2013
Authors: Johny Wahyuadi Soedarsono, Pur Wanto, Sudarsono Sudarsono
FLUENT is used to perform simulation of propeller at different wind speeds.
The simulation is done with MATLAB software.
This research used computational fluid dynamics (CFD) to simulate the performance of wind turbine propeller made with sandwich composite.
This length then divided into 20 elements for simulation purposes based on blade elements theory.
Model of Sandwich Composite Propeller Spallart-Almaras model performed on FLUENT simulation.
The simulation is done with MATLAB software.
This research used computational fluid dynamics (CFD) to simulate the performance of wind turbine propeller made with sandwich composite.
This length then divided into 20 elements for simulation purposes based on blade elements theory.
Model of Sandwich Composite Propeller Spallart-Almaras model performed on FLUENT simulation.