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Online since: October 2013
Authors: Zhe Zhang, Jin Jin Tian, Yong Gang Guo, Bing Bing Sun
System simulation
After being conducted components of the simulation, through the ethylene glycol import and export temperature and relations of flow rate, the air cooler and cold quantity recovery device will link up parts together composing system simulation model [8-9].
By analyzing the simulation result, it offers design reference for LNG refrigerated truck.
Simulation of LNG refrigerated truck’s cold energy recovery system, J.
Numerical Simulation of Header Construction of Plate-Fin Heat Exchanger, J.
CFD simulation on inlet configuration of plate-fin heat exchanger, J.
By analyzing the simulation result, it offers design reference for LNG refrigerated truck.
Simulation of LNG refrigerated truck’s cold energy recovery system, J.
Numerical Simulation of Header Construction of Plate-Fin Heat Exchanger, J.
CFD simulation on inlet configuration of plate-fin heat exchanger, J.
Online since: January 2016
Authors: K.A. Ong, Mohd Zulkifly Abdullah
aoka18usmmech@gmail.com, bmezul@usm.my
Keywords: Thermal Simulation, Convergence Study, Thermal Resistance, Mass Equation, Momentum Equation, Energy Equation.
Few approaches were used to ensure the accuracy of the thermal simulation method, ranging from the minimum number of simulation iterations required in the finite element analysis, to the residuals target in terms of the momentum, continuity and energy equations, the objective is to ensure the simulations are converged and provide the reasonable results, which is also an indication of how the partial equations have successfully been solved with analytic method.
The analysis of CPU with variable heat sink base plate thickness using CFD addressed the convergence issue with the simulation data, the study converged at 10-4 and 10-8 for flow and energy equations respectively[3].
Thermal Simulation A full 3D thermal model has been developed in the Ansys software [10], which consists of a fan to act as the forced air cooling device, together with a heat sink which is attached with an IC Package, the simulation was performed with the different heat source and the corresponding monitor point is measured to represent the response of the junction temperature.
Govindarajan, Thermal Analysis of CPU with variable Heat Sink Base Plate Thickness using CFD, 2010 [4] Darwin Edwards, Semiconductor and IC Package Thermal Metrics [5] Pelham, Simplified Method for Estimating Heat Sink Thermal Resistance, Forced Convection [6] VA.
Few approaches were used to ensure the accuracy of the thermal simulation method, ranging from the minimum number of simulation iterations required in the finite element analysis, to the residuals target in terms of the momentum, continuity and energy equations, the objective is to ensure the simulations are converged and provide the reasonable results, which is also an indication of how the partial equations have successfully been solved with analytic method.
The analysis of CPU with variable heat sink base plate thickness using CFD addressed the convergence issue with the simulation data, the study converged at 10-4 and 10-8 for flow and energy equations respectively[3].
Thermal Simulation A full 3D thermal model has been developed in the Ansys software [10], which consists of a fan to act as the forced air cooling device, together with a heat sink which is attached with an IC Package, the simulation was performed with the different heat source and the corresponding monitor point is measured to represent the response of the junction temperature.
Govindarajan, Thermal Analysis of CPU with variable Heat Sink Base Plate Thickness using CFD, 2010 [4] Darwin Edwards, Semiconductor and IC Package Thermal Metrics [5] Pelham, Simplified Method for Estimating Heat Sink Thermal Resistance, Forced Convection [6] VA.
Online since: August 2013
Authors: Shao Wen Shang, He Feng Wang, Xing Yu Lu
The CFD method has the advantages of low cost, fast speed, complete data and simulated various conditions.
This paper takes this method to calculate the numerical simulation of plant airflow, to study the basic law of air flow under certain conditions, and to select a reasonable scheme of air supply. 2 Simulation conditions 2.1 Physical model The hull painting plant is located in the north of China.
The K-ε equation model is adopted for the numerical simulation.
During numerical simulation, the wall is adiabatic.
Therefore, the future simulation is supposed to add air dynamic characteristics during the process of calculation by cooperation with the manufacturers to improve the simulation accuracy Reference: [1] Li ming,Li minggao,et al.
This paper takes this method to calculate the numerical simulation of plant airflow, to study the basic law of air flow under certain conditions, and to select a reasonable scheme of air supply. 2 Simulation conditions 2.1 Physical model The hull painting plant is located in the north of China.
The K-ε equation model is adopted for the numerical simulation.
During numerical simulation, the wall is adiabatic.
Therefore, the future simulation is supposed to add air dynamic characteristics during the process of calculation by cooperation with the manufacturers to improve the simulation accuracy Reference: [1] Li ming,Li minggao,et al.
Online since: November 2017
Authors: Min Tang, Zheng Wei Guo, Xiang Li Liu, Xin Ju Guo, Cun Kai Liu, Chuan Jing, Yong Li
An correlation of pressure relief area of the 220kV mail transformer room of indoor substation were presented based on the CFD tool FLACS modeling of the general designing schemes of the State Grid Corporation of China.
This can be done by applying the basic principle of the construction rules and the calculation of hydrodynamics, also through the investigation of indoor substation and the simulations on variety of explosions.
Explosion Simulation Analysis Explosive Pressure Selection.
By FLACS simulation, the local pressure can reach more than 27kPa which has a great destructive [10].
TNO multi-energy method in the application of steam cloud explosion simulation evaluation.
This can be done by applying the basic principle of the construction rules and the calculation of hydrodynamics, also through the investigation of indoor substation and the simulations on variety of explosions.
Explosion Simulation Analysis Explosive Pressure Selection.
By FLACS simulation, the local pressure can reach more than 27kPa which has a great destructive [10].
TNO multi-energy method in the application of steam cloud explosion simulation evaluation.
Online since: December 2013
Authors: Sheam Chyun Lin, Te Yen Huang, Song Chiang Shen, Shao Yu Hsu
In order to investigate the pressure distribution in the air gap, the CFD software, FLUENT, was employed to simulate the operation of the porous aerostatic conveyor bearing during the feeding process.
The CFD software, FLUENT, was used to simulate the operation of the conveyor bearing and analyzed its load capacity.
For the purpose of numerical simulation, the flow field was simplified by the following assumptions: (1).
Simulation model and techniques In this study, the New Way S22100C750 transition zone air bar was analyzed.
The CFD software, FLUENT, was used to simulate the operation of the conveyor bearing and analyzed its load capacity.
For the purpose of numerical simulation, the flow field was simplified by the following assumptions: (1).
Simulation model and techniques In this study, the New Way S22100C750 transition zone air bar was analyzed.
Online since: March 2012
Authors: Balan Radu, Donca Radu, Vlad Muresan, Laura Pacurar
Another method is the use of CFD (Computational Fluid Dynamics) simulation software.
A mathematical model and a CFD method are used to analyze the effects of different tube shapes on the radiant system performance.
The utilization of a large number of control volumes used in the simulation will have a proportional effect on the simulation time.
The file has 8760 time steps corresponding to each time step of the simulation.
A greater number of nodes have been tried in some simulations but the simulation time of the model increases proportionally with the complexity of the model.
A mathematical model and a CFD method are used to analyze the effects of different tube shapes on the radiant system performance.
The utilization of a large number of control volumes used in the simulation will have a proportional effect on the simulation time.
The file has 8760 time steps corresponding to each time step of the simulation.
A greater number of nodes have been tried in some simulations but the simulation time of the model increases proportionally with the complexity of the model.
Online since: August 2013
Authors: Mazlan Abdul Wahid, Aminuddin Saat, Mohsin Mohd Sies, A. Mohd Ibthisham, Amer Nordin Darus, Srithar Rajoo
Simulation of Corrected Mass Flow and Non-Adiabatic Efficiency on a Turbocharger
Ibthisham A.
Holset H3B nozzles turbine geometry was used as the simulation model.
Simulation from Case 2 predicts the heat loss approximately 68.7% on average.
Sies, Numerical Simulation of Confined Vortex Flow Using a Modified k-epsilon Turbulence Model.
CFD Letters, 2009. 1(2): p. 87-94
Holset H3B nozzles turbine geometry was used as the simulation model.
Simulation from Case 2 predicts the heat loss approximately 68.7% on average.
Sies, Numerical Simulation of Confined Vortex Flow Using a Modified k-epsilon Turbulence Model.
CFD Letters, 2009. 1(2): p. 87-94
Online since: May 2012
Authors: Y. L. Liu, B. Lv, W.L. Wei
Wei
Institute of Hydraulic Engineering ,Xi’an University of Technology,Xi’an, China
Liuyuling_2@126.com
Keywords: oxidation ditch; non-equal thickness diversion wall; numerical simulation; flow field
Abstract:Diversion wall can improve bend flow patterns in an oxidation ditch.
In this paper, a non-equal thickness diversion wall was proposed, and studied by numerical simulation method.
This paper focuses on a diversion wall of an oxidation ditch by the simulation method.
The flow field in the oxidation ditch is simulated by computational fluid dynamics (CFD).The simulated velocity field of the new shape of oxidation ditch diversion wall was compared with that of the common shape diversion wall under the same boundary conditions.
Conclusions The numerical simulation method is used to study the diversion wall body of oxidation ditch .the simulation results show that, the proposed non-equal thickness guiding wall can improve bend flow pattern, increase the bend flow velocity, improve the flow pattern on the exit section of the bend ; and also can effectively reduce the size of recirculation zone , improve the total channel velocity greater than 0.3m/s .
In this paper, a non-equal thickness diversion wall was proposed, and studied by numerical simulation method.
This paper focuses on a diversion wall of an oxidation ditch by the simulation method.
The flow field in the oxidation ditch is simulated by computational fluid dynamics (CFD).The simulated velocity field of the new shape of oxidation ditch diversion wall was compared with that of the common shape diversion wall under the same boundary conditions.
Conclusions The numerical simulation method is used to study the diversion wall body of oxidation ditch .the simulation results show that, the proposed non-equal thickness guiding wall can improve bend flow pattern, increase the bend flow velocity, improve the flow pattern on the exit section of the bend ; and also can effectively reduce the size of recirculation zone , improve the total channel velocity greater than 0.3m/s .
Online since: August 2011
Authors: Xu Dong Yang, Chun Lin Ma, Shi Qiu, Tao Chen, Dan Yang, Huan Yang, Si Lin Chen
The numerical simulation of flow field of a new rectangular suction inlet installing guide plates with different rake angles was carried out by means of the K-ε turbulence model based on the Fluent hydromechanics calculation software.
The numerical simulations of flow field for this suction inlet were carried out by using K-ε turbulence model based on Fluent hydromechanics calculation software.
Sucktion inlet Simulated surface (a) Physical model (b) gridded model Fig.1 The dimensions of physical model and its gridded model Flow analysis and structure optimization Computational Fluid Dynamics (CFD) is a combination of modern fluid mechanics, numerical analysis and computer science.
It is possible for some physical phenomenon, such as fluid flow and heat transfer, to get system analysis by using the computer simulation and image display of CFD.
Fig.6 Experimental result Summary The numerical simulation of flow field of the rectangular suction inlet installing guide plates with different rake angles was carried out by using the K-ε turbulence model based on Fluent.
The numerical simulations of flow field for this suction inlet were carried out by using K-ε turbulence model based on Fluent hydromechanics calculation software.
Sucktion inlet Simulated surface (a) Physical model (b) gridded model Fig.1 The dimensions of physical model and its gridded model Flow analysis and structure optimization Computational Fluid Dynamics (CFD) is a combination of modern fluid mechanics, numerical analysis and computer science.
It is possible for some physical phenomenon, such as fluid flow and heat transfer, to get system analysis by using the computer simulation and image display of CFD.
Fig.6 Experimental result Summary The numerical simulation of flow field of the rectangular suction inlet installing guide plates with different rake angles was carried out by using the K-ε turbulence model based on Fluent.
Online since: September 2011
Authors: Song Bai Li, Yi Lun Liu
Simulation results show that the performance of oil lubricated screw pair is the best at the radial clearance of 0.10 mm.
Application of CFD analysis for rotating machinery-Part I: hydrodynamic, hydrostatic bearings and squeeze film damper [J].
CFD analysis of journal bearing hydrodynamic lubrication by Bingham lubricant [J].Tribology International, 2008(41):1190-1204
[6] J.J.Wang, P.F.Zhang, L.X.Huang, Numerical simulation of flow around cylinder with an upstream rod in tandem at low Reynolds numbers [J].
Numerical simulation study on water-lubricated hydrostatic journal bearings [J].
Application of CFD analysis for rotating machinery-Part I: hydrodynamic, hydrostatic bearings and squeeze film damper [J].
CFD analysis of journal bearing hydrodynamic lubrication by Bingham lubricant [J].Tribology International, 2008(41):1190-1204
[6] J.J.Wang, P.F.Zhang, L.X.Huang, Numerical simulation of flow around cylinder with an upstream rod in tandem at low Reynolds numbers [J].
Numerical simulation study on water-lubricated hydrostatic journal bearings [J].