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Online since: June 2013
Authors: Radu D. Rugescu, Alina Bogoi, Radu Cirligeanu
Computational efficiency is demonstrated by CFD simulation of the starting transients in ADDA solid rocket engines and in the SEATTLER solar mirror tower.
The code is exclusively directed to unsteady flow simulations in slender channels.
Still the 1D CFD approach is well justified in both applications – the RE and the ST –mainly due to the slender aspect of the channels in both ingredients.
The simulation of tower’s unsteady behaviour is based on the unsteady equations of the gas (air) flow.
D., “Technology of CFD in space engines and solar-gravitational power plants”, International Journal on Energy Technology and Policies, ISSN 1472-8923, On-line ISSN 1741-508X, 6, 1-2(2008), p.124-142.
The code is exclusively directed to unsteady flow simulations in slender channels.
Still the 1D CFD approach is well justified in both applications – the RE and the ST –mainly due to the slender aspect of the channels in both ingredients.
The simulation of tower’s unsteady behaviour is based on the unsteady equations of the gas (air) flow.
D., “Technology of CFD in space engines and solar-gravitational power plants”, International Journal on Energy Technology and Policies, ISSN 1472-8923, On-line ISSN 1741-508X, 6, 1-2(2008), p.124-142.
Online since: August 2013
Edited by: Dashnor Hoxha
The 127 papers are grouped as follows:
Chapter 1: Aerodynamics and Aeronautic;
Chapter 2: Fluid Dynamics, CFD and other Computational Methods;
Chapter 3: Computational Techniques, Simulation and Numerical Analysis;
Chapter 4: Dynamics and Vibration;
Chapter 5: Motors, Combustion, Propulsion, Fuel and Emission Control;
Chapter 6: Instrumentation and Measurement, Control Systems and Automation;
Chapter 7: Trajectory Design, Navigation and Control;
Chapter 8: Materials Characterization and Technologies;
Chapter 9: Design, Industry and Manufacturing Technologies;
Chapter 10: Thermal Analysis Technologies, Heat Exchange Engineering and Applications.
Online since: October 2010
Authors: Wei Xing Xu, Shou Qi Yuan
The flow formulation was founded as console formulation, and with the body-fitted
coordinate system and standard k - ε turbulent model, the numerical analysis of the internal 3-D
incompressible turbulent flow of the agitated flow field was carried out by CFD software Fluent.
With the development of computer technology, CFD technology is playing a more and more important role in the development and design of the mixing equipment for its speed and economy.
This paper deals with the numerical simulation analysis on the agitated flow field of the submersible mixer (its diameter is 360mm, and its rotational speed is 1430r/min) by CFD software Fluent.
Control Equations The 3-D incompressible Reynolds time-averaged equations are adopted and enclosed by the standard ε−k turbulence model in the numerical simulation of the agitated flow field.
With the development of computer technology, CFD technology is playing a more and more important role in the development and design of the mixing equipment for its speed and economy.
This paper deals with the numerical simulation analysis on the agitated flow field of the submersible mixer (its diameter is 360mm, and its rotational speed is 1430r/min) by CFD software Fluent.
Control Equations The 3-D incompressible Reynolds time-averaged equations are adopted and enclosed by the standard ε−k turbulence model in the numerical simulation of the agitated flow field.
Online since: April 2014
Authors: Kun Ru Ma, Xin Wang
The Numerical Simulation and Research and Application of Energy-Saving Effect of Hot Air Curtain Jet Velocity of The Dining Room
Kunru Ma1, a, Xin Wang2,b
1,2,the Civil Engineering College, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050000, China
amakunru@163.com, bwangxinlove7@163.com
Keywords: Dining Room Door, Air Curtain, Jet Velocity, Numerical Simulation, Energy-Saving
Abstract:There are often people and goods in and out of the dinning room door, so the door is often open.
Then set up physical model for wind pressure, multiply of hot pressure and the local hot pressure at the dinning room door of the air curtain air flow in CFD method.
To adopt finite volume method, use CFD software fluent.This paper selects the second order wind format to discrete partial differential equation, solution of the stress field adopt SIMPLE algorithm proposed by Spalding and Patankar[4].
The numerical simulation of the hot air curtain energy saving effect of the dining door Simulation conditions:30°,=40˚C,the other conditions same as above.
Conclusion Through establish the mathematical physics model of the hot air curtain, and the numerical simulation, this paper analysis the air curtain velocity field, temperature field, heat loss, calculation heat load parameters ,etc.
Then set up physical model for wind pressure, multiply of hot pressure and the local hot pressure at the dinning room door of the air curtain air flow in CFD method.
To adopt finite volume method, use CFD software fluent.This paper selects the second order wind format to discrete partial differential equation, solution of the stress field adopt SIMPLE algorithm proposed by Spalding and Patankar[4].
The numerical simulation of the hot air curtain energy saving effect of the dining door Simulation conditions:30°,=40˚C,the other conditions same as above.
Conclusion Through establish the mathematical physics model of the hot air curtain, and the numerical simulation, this paper analysis the air curtain velocity field, temperature field, heat loss, calculation heat load parameters ,etc.
Online since: December 2013
Authors: Tian Long Mei, Jing Ping Wu, Ling Xu, Shuai Yi, Li Qun Wang
This paper tries to simulate a numerical wave tank by FLUENT CFD software using k-ω turbulence model in a two-dimensional domain.
The simulations show that the amplitude of the transient wave decreases while the relative breadth increases.
Here, the numerical wave tank is simulated by FLUENT CFD software in a two-dimensional domain.
The simulations show that the amplitude of transition wave decreases with the relative length increase.
Then this time step is chosen for next numerical wave tank simulation.
The simulations show that the amplitude of the transient wave decreases while the relative breadth increases.
Here, the numerical wave tank is simulated by FLUENT CFD software in a two-dimensional domain.
The simulations show that the amplitude of transition wave decreases with the relative length increase.
Then this time step is chosen for next numerical wave tank simulation.
Online since: October 2011
Authors: He Quan Lu, Jie Gang Mu, Shui Hua Zheng, Jin Jing Zhao, Hui Wang
In this paper, the method of balancing the axial force with balance hole is studied based on the combination of CFD and experimental research.
Simulation Settings.
Selecting separation solver for simulation, assuming steady flow in centrifugal pumps.
The test the value of axial force is a little larger than numerical simulation, due to the simulation process in a better state, and the measurement process in test may have deviation.
Performance Prediction of Centrifugal Pump Based on the Method of Numerical Simulation [J].
Simulation Settings.
Selecting separation solver for simulation, assuming steady flow in centrifugal pumps.
The test the value of axial force is a little larger than numerical simulation, due to the simulation process in a better state, and the measurement process in test may have deviation.
Performance Prediction of Centrifugal Pump Based on the Method of Numerical Simulation [J].
Online since: June 2013
Authors: Jian Feng Wu, Cai Hua Wang, Wei Ling Wang
CFD Numerical Simulation
Control equations.
In the case of numerical simulation calculation the selected vector high is 10m.
In order to analyze the effect of the turbulence models selection on the numerical simulation, the numerical simulation used RNGk -ε model.
[2] Wang, F.J., Computational fluid dynamics analysis of CFD software theory and application [M].
“Numerical Simulation of architectural shape coefficient of wind load .”J.
In the case of numerical simulation calculation the selected vector high is 10m.
In order to analyze the effect of the turbulence models selection on the numerical simulation, the numerical simulation used RNGk -ε model.
[2] Wang, F.J., Computational fluid dynamics analysis of CFD software theory and application [M].
“Numerical Simulation of architectural shape coefficient of wind load .”J.
Online since: September 2011
Authors: Yue Yin, Xi Liang Liu, Yue Ming Luo
In this paper, the numerical wind tunnel method (NWTM), based on the Computational Fluid Dynamics (CFD), is applied to study wind load.
Reliability of numerical wind tunnel method To verify the reliability of the NWTM, a CFD simulation was carried out with the full-scale model under the same conditions as those of the wind tunnel experiment.
The boundary conditions of the CFD simulation were also set identical to those of the wind tunnel experiment.
Conclusions The present CFD predictions have been found in fair agreement with WTT, a fact indicating the validity of the present model despite the different formulations.
Reliability of numerical wind tunnel method To verify the reliability of the NWTM, a CFD simulation was carried out with the full-scale model under the same conditions as those of the wind tunnel experiment.
The boundary conditions of the CFD simulation were also set identical to those of the wind tunnel experiment.
Conclusions The present CFD predictions have been found in fair agreement with WTT, a fact indicating the validity of the present model despite the different formulations.
Online since: November 2011
Authors: Ming Hua Bai, Yu Zhang, Qiu Fang Wang
Numerical Simulation of Flow Field in Burnt Lime Hydrator
Minghua Bai, Yu Zhang and Qiufang Wang
College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China
zhangyu1985725@163.com
Keywords: burnt lime hydrator; numerical simulation; stirring shaft; blade
Abstract.
The schematic diagram of slaker Conditions of Simulation Assumptions.
The level of mesh density has significant influence on the computing time and accuracy of the simulation results[5].
Wang, “Computational Fluid Dynamics Analysis-the management and application of CFD software,” BeingJing: Tsinghua University Press, 2004
Wan, “Finite Element Analysis of Stand Center Blender Based on Its CFD Numerical Simulation,” Oil Field Equipment, Vol. 37 No. 8, 2008, pp.52-55
The schematic diagram of slaker Conditions of Simulation Assumptions.
The level of mesh density has significant influence on the computing time and accuracy of the simulation results[5].
Wang, “Computational Fluid Dynamics Analysis-the management and application of CFD software,” BeingJing: Tsinghua University Press, 2004
Wan, “Finite Element Analysis of Stand Center Blender Based on Its CFD Numerical Simulation,” Oil Field Equipment, Vol. 37 No. 8, 2008, pp.52-55
Online since: November 2011
Authors: Suo Huai Zhang, Ming Wei Wan
In this paper, we study the temperature and pressure distribution within the tunnel oven by the commercial CFD software-fluent. while the temperature of the vials, the heating process of the bottles in the tunnel oven.
CFD simulation of tunnel oven The boundary conditions and parameters setting.
Conclusion Through simulation, verification laminar flow tunnel oven can satisfy the GMP requirements, while comparing multiple simulations under different wind speed, get a optimum speed range of hot air.
But the simulation of the tunnel oven is a very complex process, in this simulation, the model was simplified at some extent, without considering the greater impact of the cooling zone and the preheating zone to the sterilization section in the practical production; And the differences the conveyor belt and insulation material will certainly affect the results; some of the parameters in simulation are set some experience date from the practic production, we should to further improve in order to ensure data accuracy.
Multi-belt dryer CFD simulation and wind field test [J], Drying technology and equipment, 2007,5 (1) :15-21
CFD simulation of tunnel oven The boundary conditions and parameters setting.
Conclusion Through simulation, verification laminar flow tunnel oven can satisfy the GMP requirements, while comparing multiple simulations under different wind speed, get a optimum speed range of hot air.
But the simulation of the tunnel oven is a very complex process, in this simulation, the model was simplified at some extent, without considering the greater impact of the cooling zone and the preheating zone to the sterilization section in the practical production; And the differences the conveyor belt and insulation material will certainly affect the results; some of the parameters in simulation are set some experience date from the practic production, we should to further improve in order to ensure data accuracy.
Multi-belt dryer CFD simulation and wind field test [J], Drying technology and equipment, 2007,5 (1) :15-21