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Online since: August 2015
Authors: T. Micha Premkumar, T. Mohan, N.N.P. Saran Reddy, Sivamani Seralathan
atmichamech@gmail.com, bsiva.seralathan@gmail.com
Keywords: CFD, vertical axis wind turbine, self starting, NACA profile
Abstract.
The commercial CFD code, ANSYS CFX 13.0© was used for the present studies.
The rotating reference frame method is effective and simple for the steady-state simulations [8].
Three dimensional computational domains are modeled to perform the simulation.
ANSYS ICEM CFD 13.0© is used to generate unstructured grid with tetrahedral elements in the computational domain.
The commercial CFD code, ANSYS CFX 13.0© was used for the present studies.
The rotating reference frame method is effective and simple for the steady-state simulations [8].
Three dimensional computational domains are modeled to perform the simulation.
ANSYS ICEM CFD 13.0© is used to generate unstructured grid with tetrahedral elements in the computational domain.
Online since: October 2014
Authors: Marius Costel Balan, Bogdan Andrei Tofan, Dragos Pastrav, Cătălin George Popovici, Marina Verdeș, Vasilică Ciocan, Andrei Burlacu
Numerical simulations are performed using the commercial computer program Ansys Fluent ® CFD (Computational Fluid Dynamics).
Another study comparing experimental results with those of numerical simulations is [4] and uses the same boundary conditions.
Numerical simulations are realized using the commercial software Ansys Fluent ® CFD (Computational Fluid Dynamics).
Numerical simulations are performed using the commercial software ANSYS Fluent ® CFD.
Chereches, Numerical simulation of dynamical aspects of natural convection flow in a double-skin façade, Energy and Buildings, pp. 229-233, (2012)
Another study comparing experimental results with those of numerical simulations is [4] and uses the same boundary conditions.
Numerical simulations are realized using the commercial software Ansys Fluent ® CFD (Computational Fluid Dynamics).
Numerical simulations are performed using the commercial software ANSYS Fluent ® CFD.
Chereches, Numerical simulation of dynamical aspects of natural convection flow in a double-skin façade, Energy and Buildings, pp. 229-233, (2012)
Online since: February 2014
Authors: Li Sheng Zhang, Jin Jiang, Zhi Huai Xiao, Yan Hui Li
In this paper, the relationship between impeller design parameters and performance of a partial emission pump is studied by numerical simulation.
All the numerical simulations were carried out by using the commercial software FLUENT V12.1 based on the Realizable k-ε turbulent model.
Partial Emission Pump Geometry and Numerical Simulation Model Pump Geometry.
Unstructured tetrahedral meshes were generated by using the ICEM-CFD software.
The simulation results of head and efficiency are compared, as shown in Fig2 and Fig3, respectively.
All the numerical simulations were carried out by using the commercial software FLUENT V12.1 based on the Realizable k-ε turbulent model.
Partial Emission Pump Geometry and Numerical Simulation Model Pump Geometry.
Unstructured tetrahedral meshes were generated by using the ICEM-CFD software.
The simulation results of head and efficiency are compared, as shown in Fig2 and Fig3, respectively.
Online since: May 2014
Authors: Chang Yan Lin, Xiu Jian Liu, Yu Yang Liu, Chuang Ye Xu, Guang Hui Wu
Risk forecast of in-stent restenosis by CFD method
LIN Changyan1,2a, LIU Xiujian1,2b, LIU Yuyang1c, XU Chuangye1,2,
WU Guanghui1,2
1Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
2Beijing Institute of Heart Lung & Blood Vessel Diseases, Beijing 100029, China
allbl@sina.coml, bliuxjian146120@gmail.com, cliuyy803803@163.com
Keywords: coronary bifurcation; in-stent restenosis; hemodynamics; wall shear stress; CFD
Abstract.
Based on patient-specific pre-interventional and virtual stented geometries from CTA images, numerical simulation indicated that the wall shear stress (WSS) in stented segments, where the ISR occurred in one year, was lower than those without ISR, however.
It is worth noting that the estimation of WSS is best done with medical image-based computational fluid dynimics(CFD), rather than direct measurement of fluid velocities.
Investigation of blood flow patterns has benefited from recent advances in CFD software, while the solid mechanical stresses in the artery wall can be modeled with finite element analysis (FEA).
Fluid dynamic simulations were carried out through solving the continuity and momentum conservation equations, based on a finite volume method.
Based on patient-specific pre-interventional and virtual stented geometries from CTA images, numerical simulation indicated that the wall shear stress (WSS) in stented segments, where the ISR occurred in one year, was lower than those without ISR, however.
It is worth noting that the estimation of WSS is best done with medical image-based computational fluid dynimics(CFD), rather than direct measurement of fluid velocities.
Investigation of blood flow patterns has benefited from recent advances in CFD software, while the solid mechanical stresses in the artery wall can be modeled with finite element analysis (FEA).
Fluid dynamic simulations were carried out through solving the continuity and momentum conservation equations, based on a finite volume method.
Online since: January 2012
Authors: Hui Yang, Ke Qing Sun
The CFD model was created on the basis of the experiment, and the results were basically accord with the experimental results.
In addition, CFD simulation of tunnel fire can also provide reference data measurement, and it is easy to change the conditions in the experiment.
Comparison of simulate results with experimental results.CFD method was used to study this ventilation mode; the results of numerical simulation and experiment was shown in Table 3.
Britter.CFD Simulations of a Tunnel Fire-Part I.
Britter.CFD Simulations of a Tunnel Fire-Part II.Fire Safety Journal 26 (1996)
In addition, CFD simulation of tunnel fire can also provide reference data measurement, and it is easy to change the conditions in the experiment.
Comparison of simulate results with experimental results.CFD method was used to study this ventilation mode; the results of numerical simulation and experiment was shown in Table 3.
Britter.CFD Simulations of a Tunnel Fire-Part I.
Britter.CFD Simulations of a Tunnel Fire-Part II.Fire Safety Journal 26 (1996)
Online since: December 2014
Authors: Shu Cai Wang, Shuo Li, Fang Cheng, Gao Bing Xia
Only the reasonable gas flow ensures the uniform temperature field.The paper uses the technique of computational fluid dynamics (CFD) to conduct the numerical simulation of the flow field and finds out the law of the distribution of the temperature field,on the basis of which the numerical simulation of non steady state of the freezing process of the frozen products is carried out.The experiments prove that the simulation results can better reflect the reality,and show that CFD tools can play an important role in the design and optimization of cold storages.
Because the process of freezing is a process in which the temperature changes over time, you need to set the unsteady method of research method of unsteady.Therefore, its computation is more complex, the simplified grid model iterates more than 3000 steps.[6] Fig 8 Division of the grid of frozen goods Fig 9 The final temperature field distribution 2.3 Numerical simulation computation After the physical materials of frozen goods are set,by the simulation computation,the distribution of the final temperature field is obtained,which is shown in Figure 9.The figure clearly shows that the temperature in the center of the frozen goods is the highest,and the effect of freezing lasts longes. 2.4 the analysis simulation results Based on successfully simulating the flow field in cold storages,the goods model is created.The freezing process of numerical value is calculated.The results show that the temperature of goods at the beginning falls rapidly because of the
JAKUBOWSKI:CFD Simulations as a Supporting Tool for Process and Construction optimization in Food Industry Production Practice: A Case Study of a Single Truck Smoking Chamber[J].Italian Journal of Food Science, Vol. 11(2013),P.251 [3] Foster A M, Barrett R, James S J: Measurement and prediction of air movement through doorways in refrigerated rooms [J] .
The numerical simulation and validation of the gas flow field in cold storages [J].
Journal of agricultural engineering, Vol. 2(2005)P. 11 [5] Xie Jing, Wu Tian The numerical simulation of the temperature field of small cold storages in the process of opening and closing doors [J].
Because the process of freezing is a process in which the temperature changes over time, you need to set the unsteady method of research method of unsteady.Therefore, its computation is more complex, the simplified grid model iterates more than 3000 steps.[6] Fig 8 Division of the grid of frozen goods Fig 9 The final temperature field distribution 2.3 Numerical simulation computation After the physical materials of frozen goods are set,by the simulation computation,the distribution of the final temperature field is obtained,which is shown in Figure 9.The figure clearly shows that the temperature in the center of the frozen goods is the highest,and the effect of freezing lasts longes. 2.4 the analysis simulation results Based on successfully simulating the flow field in cold storages,the goods model is created.The freezing process of numerical value is calculated.The results show that the temperature of goods at the beginning falls rapidly because of the
JAKUBOWSKI:CFD Simulations as a Supporting Tool for Process and Construction optimization in Food Industry Production Practice: A Case Study of a Single Truck Smoking Chamber[J].Italian Journal of Food Science, Vol. 11(2013),P.251 [3] Foster A M, Barrett R, James S J: Measurement and prediction of air movement through doorways in refrigerated rooms [J] .
The numerical simulation and validation of the gas flow field in cold storages [J].
Journal of agricultural engineering, Vol. 2(2005)P. 11 [5] Xie Jing, Wu Tian The numerical simulation of the temperature field of small cold storages in the process of opening and closing doors [J].
Online since: June 2012
Authors: Qing Long An, Ming Chen, Li Jiang, Zhi Qiang Liu, Bo Wen Shi
This paper applied computational fluid dynamics (CFD) to analyze flow field of MQL in thread turning.
Angulo [6] found MQL can reduce tool wear by experiments and simulation techniques.
Different compressed air flow rates will affect performance of MQL, which has been investigated in CFD simulation.
This paper utilized FLUENT (CFD analysis software, ANSYS Inc.) to analyze flow field of MQL.
In the simulation, SIMPLE solver was the solution method.
Angulo [6] found MQL can reduce tool wear by experiments and simulation techniques.
Different compressed air flow rates will affect performance of MQL, which has been investigated in CFD simulation.
This paper utilized FLUENT (CFD analysis software, ANSYS Inc.) to analyze flow field of MQL.
In the simulation, SIMPLE solver was the solution method.
Online since: August 2023
Authors: Gerardo Sanjuan-Sanjuan, Itzel Jazmín Ramirez-Calera, Ángel Enrique Chavez-Castellanos, Arturo Galindo-Solano
a*sanjuan_ges@quimica.unam.mx, barturocdg@gmail.com, citzel.calera@gmail.com, dangelencc@quimica.unam.mx
Keywords: Non-Newtonian, Simulation, Rheology, Semisolid alloys, CFD.
In order to study and A356 aluminum semisolid alloy flow, a Computational Fluid Dynamics (CFD) software (ANSYS) is used to simulate the die filling process in a rectangular mold.
Simulation was run without considering energy transfer.
Parameters used for the simulations of each constitutive model.
In general, simulations obtained in present work by using ANSYS software, have correspondence with other simulations [7-10].
In order to study and A356 aluminum semisolid alloy flow, a Computational Fluid Dynamics (CFD) software (ANSYS) is used to simulate the die filling process in a rectangular mold.
Simulation was run without considering energy transfer.
Parameters used for the simulations of each constitutive model.
In general, simulations obtained in present work by using ANSYS software, have correspondence with other simulations [7-10].
Online since: June 2009
Authors: An Shik Yang, Jing Chuen Lin, Li Yu Tseng
The predictions by the computational fluid dynamics (CFD) code
ACE+
®
were compared with measured transient phase-averaged velocities of Rumsey et al. for
software validation.
For a synthetic jet under the crossflow condition, the transient velocities measured near a circular orifice were obtained specifically for CFD code validation [6].
For prediction of such complicated flow problems, a computational fluid dynamics based computer code can be very useful as a simulation tool to optimize the control parameters.
In this research, simulations using CFD code ACE+® were performed to investigate the flowfield structure induced by the interaction of a single synthetic jet with a crossflow.
Conclusions In this study, the flow simulations using the k-ε model were generally more accurate than those by the RNG k-ε model in determining the temporary velocity profiles.
For a synthetic jet under the crossflow condition, the transient velocities measured near a circular orifice were obtained specifically for CFD code validation [6].
For prediction of such complicated flow problems, a computational fluid dynamics based computer code can be very useful as a simulation tool to optimize the control parameters.
In this research, simulations using CFD code ACE+® were performed to investigate the flowfield structure induced by the interaction of a single synthetic jet with a crossflow.
Conclusions In this study, the flow simulations using the k-ε model were generally more accurate than those by the RNG k-ε model in determining the temporary velocity profiles.
Online since: January 2015
Authors: Ji Yong Liu, Qing Wen Kong, Da Ming Sun
A S60 CB=0.6 ship model is taken as an example to the numerical simulation.
Unsteady RANS simulation of a surface combatant with roll motion[J].
CFD simulation of 3-dimensional motion of a ship in waves: application to an advancing ship in heading waves[J].
CFD calculation for resistance of a ship moving near the critical speed in shallow water[J].
Numerical simulation of free ship model towed in still water[J].
Unsteady RANS simulation of a surface combatant with roll motion[J].
CFD simulation of 3-dimensional motion of a ship in waves: application to an advancing ship in heading waves[J].
CFD calculation for resistance of a ship moving near the critical speed in shallow water[J].
Numerical simulation of free ship model towed in still water[J].