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Online since: June 2017
Authors: Iveta Skotnicova, Vladimira Michalcova, Lenka Lausova, Sergej Kuznetsov
It is solved numerically using CFD (Computational Fluid Dynamics) codes in the Ansys Fluent software.
The results of solving the SST Transition model are verified with experimental measurements, and other selected types of models based on the direct simulation of large vortices (LES (Large eddy simulation) method) are subsequently tested.
Sousa, Experimental and numerical simulation of flow around two-dimensional hills, J.
Harms, CFD investigation of the atmospheric boundary layer under different thermal stability conditions, J.
Journal of Mathematics and Computers in Simulation. 8 (2014) 135-140
The results of solving the SST Transition model are verified with experimental measurements, and other selected types of models based on the direct simulation of large vortices (LES (Large eddy simulation) method) are subsequently tested.
Sousa, Experimental and numerical simulation of flow around two-dimensional hills, J.
Harms, CFD investigation of the atmospheric boundary layer under different thermal stability conditions, J.
Journal of Mathematics and Computers in Simulation. 8 (2014) 135-140
Online since: November 2018
Authors: Mekki Larabi, Salah Mebarki, Abdel Hakem Belaghit, Benaoumeur Aour
In general, a computational fluid dynamics (CFD) study provides quantitative global flow data away from the wall or simply qualitative data [24].
It is interesting to note that the models developed as part of this CFD work could be a fondamental tool for vascular surgery during pre- and post-surgery.
Lee, P.Ho, Investigation of hemodynamics in the development of dissecting aneurysm within patient-specific dissecting aneurismal aortas using computational fluid dynamics (CFD) simulations, Journal of Biomechanics. 44 (2011) 827-836
Ramos, Aorta Ascending Aneurysm Analysis Using CFD models towards Possible Anomalies, fluids. 2, 31 (2017) 1-15
Geest, Simulation and probabilistic failure prediction of grafts for aortic aneurysm, Engineering Computations. 27 (2010) 84–105
It is interesting to note that the models developed as part of this CFD work could be a fondamental tool for vascular surgery during pre- and post-surgery.
Lee, P.Ho, Investigation of hemodynamics in the development of dissecting aneurysm within patient-specific dissecting aneurismal aortas using computational fluid dynamics (CFD) simulations, Journal of Biomechanics. 44 (2011) 827-836
Ramos, Aorta Ascending Aneurysm Analysis Using CFD models towards Possible Anomalies, fluids. 2, 31 (2017) 1-15
Geest, Simulation and probabilistic failure prediction of grafts for aortic aneurysm, Engineering Computations. 27 (2010) 84–105
Online since: August 2013
Authors: Bo Feng, Guang Xiao Kou, Hang Qing Wang, Liang Liang Hu
Simulation and Optimization on Outlet Velocity of Industrial Plant
Air Supply Cylinder
Guang-xiao Kou1,a, Hang-qing Wang2, b, Bo Feng3,c and Liangliang Hu
1,2,3 Hunan University of Technology, China
a 443849697@qq.com ,b1260016137@qq.com
Keywords: numerical simulation, air supply cylinder, flow field analysis, outlet velocity
Abstract: By using numerical simulation method,the three-dimensional flow field of air supply cylinder using for displacement ventilation in industrial plant is analyzed.
MaGuoBin studied the size, the location of the heat source and the relative position of the tuyere on the influence of displacement ventilation airflow organization by using CFD method [7, 8].
ASHRAE Transaction, 1998,104(IA): 78-90 [5] Hee-Jin Park, Dale Holland.The effect of lacation of a convective heat source on displacement ventilation: CFD study.Energy and Buildings, 2001, Vol.36:883-889 [6] Wang Xiaotong.
Numerical simulation of displacement ventilation with many pollution sources.
Displacement ventilation effect of suspended particle distribution of the numerical simulation.
MaGuoBin studied the size, the location of the heat source and the relative position of the tuyere on the influence of displacement ventilation airflow organization by using CFD method [7, 8].
ASHRAE Transaction, 1998,104(IA): 78-90 [5] Hee-Jin Park, Dale Holland.The effect of lacation of a convective heat source on displacement ventilation: CFD study.Energy and Buildings, 2001, Vol.36:883-889 [6] Wang Xiaotong.
Numerical simulation of displacement ventilation with many pollution sources.
Displacement ventilation effect of suspended particle distribution of the numerical simulation.
Online since: November 2014
Authors: R. Rajeswari, R. Jothilakshmi
Computational fluid dynamics (CFD) is widely used to solve continuum scale equations.
CFD enables us to qualitatively and quantitatively predict the fluid flows through mathematical modeling and numerical methods.
With regard to MNP based targeted drug delivery, CFD has been combined with in vitro release profile of drug transport [45].
A number of modeling techniques such as ab initio methods, MD simulation and MC simulation are available to model the MNP structure and their properties.
They have used time dependent CFD simulations to study the salient features of MCNP deposition mechanism.
CFD enables us to qualitatively and quantitatively predict the fluid flows through mathematical modeling and numerical methods.
With regard to MNP based targeted drug delivery, CFD has been combined with in vitro release profile of drug transport [45].
A number of modeling techniques such as ab initio methods, MD simulation and MC simulation are available to model the MNP structure and their properties.
They have used time dependent CFD simulations to study the salient features of MCNP deposition mechanism.
Online since: November 2012
Authors: Hao Zhang, Zi Li Chen
Further Exploring CFD-Based Gust Response of the Powered Parachute
Hao Zhang, Zi-li Chen
Department of Optics and Electronics Engineering Ordnance Engineering College,Shijiazhuang, 050003,China
zhanghao6681@sina.com
Keywords: Powered Parachute; Gust Response; Numerical Simulation
Abstract:Researched the longitudinal model of the powered parachute , and dynamic numerical simulated the entire gust response in FLUENT .
The simulation show that: the active exercise of reasonable design parafoil can inhibit the unsteady aerodynamic interference caused by the gust.
Due to the simulation process is two-dimensional unsteady problem, the dynamic simulation of two-dimensional unsteady mode is used[6]l.
The simulation result of the powered parachute combined with actual control needs to be further studied and discussed.
Computer Simulation. 2010.07, 27 (7) : 56-60, In Chinese
The simulation show that: the active exercise of reasonable design parafoil can inhibit the unsteady aerodynamic interference caused by the gust.
Due to the simulation process is two-dimensional unsteady problem, the dynamic simulation of two-dimensional unsteady mode is used[6]l.
The simulation result of the powered parachute combined with actual control needs to be further studied and discussed.
Computer Simulation. 2010.07, 27 (7) : 56-60, In Chinese
Online since: July 2011
Authors: Feng Ling Yang, Shen Jie Zhou, Gui Chao Wang
In this work, the numerical simulation method of the eccentric agitation was established based on the detached eddy simulation (DES) model to study the MI in an eccentric stirred tank.
Modeling approach Computational model was solved using the commercial CFD solver Fluent 6.3.26 (ANSYS, USA).
The standard wall functions were used for the simulations.
The time step adopted was for all the simulations.
All the simulations were conducted by a parallel version of Fluent on a HP workstation XW6200.
Modeling approach Computational model was solved using the commercial CFD solver Fluent 6.3.26 (ANSYS, USA).
The standard wall functions were used for the simulations.
The time step adopted was for all the simulations.
All the simulations were conducted by a parallel version of Fluent on a HP workstation XW6200.
Online since: September 2013
Authors: Bo Zhang, Shu Shan Wang, Meng Yu Cao, Yu Xin Xu
The simulation of flow in a wind tunnel is based on the airflow around model and prototype has dynamic similarity.
Fig.4 Pressure Nephogram of CFX Simulation Conclusion Wind tunnel test have been carried out on a personal RAP with a deflectable nose.
The experiment results can be applied to further research, such as numerical simulation of aerodynamic effects of deflectable nose and trajectory control.
Viscous CFD analysis of a deflected nose axisymmetric projectile at high speeds.
CFD Analysis of a supersonic projectile with deflectable nose control.
Fig.4 Pressure Nephogram of CFX Simulation Conclusion Wind tunnel test have been carried out on a personal RAP with a deflectable nose.
The experiment results can be applied to further research, such as numerical simulation of aerodynamic effects of deflectable nose and trajectory control.
Viscous CFD analysis of a deflected nose axisymmetric projectile at high speeds.
CFD Analysis of a supersonic projectile with deflectable nose control.
Online since: August 2020
Authors: Alaa A. Ibrahim, Mona G. Ibrahim, Hassan E.S. Fath
Numerical Simulation for Falling Film Thickness around Horizontal Tube in MVC and MED Evaporators
Alaa A.
Engineer, Environmental Engineering Department, Egypt Japan University of Science & Technology (E-JUST), Alexandria (Egypt) 2Professor in Desalination, Environmental Engineering Department, Egypt Japan University of Science & Technology (E-JUST), Alexandria (Egypt) 3Dean of school of Energy Resources, Environment, Chemical and Petrochemical Engineering, Egypt Japan University of Science & Technology (E-JUST), Alexandria (Egypt) aalaa.adel@ejust.edu.eg, bhassan.fath@ejust.edu.eg, cmona.gamal@ejust.edu.eg Keywords: Computational Fluid Dynamics (CFD), Mechanical Vapor Compression (MVC), Multi-Effect Distillation (MED), Falling film evaporation, Film thickness, Heat Transfer.
The study is based on computational fluid dynamics (CFD) using volume of fraction (VOF) as a multi-phase technique in ANSYS Fluent.
Four CFD study cases are developed to simulate the falling film behaviour at circumferential angle range from 15⁰ to 165⁰ with inter-tube spacing of 10 mm, 16 mm, 33 mm and 40 mm and for constant value of flow rate and at the same surrounding conditions.
Simulations are conducted using a domain of only two tubes with 20 mm outer diameter.The results from the numerical models are compared with the published experimental correlations, showing a comparatively reasonable agreement.
Engineer, Environmental Engineering Department, Egypt Japan University of Science & Technology (E-JUST), Alexandria (Egypt) 2Professor in Desalination, Environmental Engineering Department, Egypt Japan University of Science & Technology (E-JUST), Alexandria (Egypt) 3Dean of school of Energy Resources, Environment, Chemical and Petrochemical Engineering, Egypt Japan University of Science & Technology (E-JUST), Alexandria (Egypt) aalaa.adel@ejust.edu.eg, bhassan.fath@ejust.edu.eg, cmona.gamal@ejust.edu.eg Keywords: Computational Fluid Dynamics (CFD), Mechanical Vapor Compression (MVC), Multi-Effect Distillation (MED), Falling film evaporation, Film thickness, Heat Transfer.
The study is based on computational fluid dynamics (CFD) using volume of fraction (VOF) as a multi-phase technique in ANSYS Fluent.
Four CFD study cases are developed to simulate the falling film behaviour at circumferential angle range from 15⁰ to 165⁰ with inter-tube spacing of 10 mm, 16 mm, 33 mm and 40 mm and for constant value of flow rate and at the same surrounding conditions.
Simulations are conducted using a domain of only two tubes with 20 mm outer diameter.The results from the numerical models are compared with the published experimental correlations, showing a comparatively reasonable agreement.
Online since: February 2006
Authors: C.J.B. Dicken, W. Mérida
A CFD model
has been created that spatially discretizes the cylinder in order to predict the gas
temperature distribution.
The boundary and initial conditions for the simulation are listed in table 1 below.
Table 1: Boundary and initial conditions for the fast filling model simulation.
The results of those experiments will be used to validate the CFD model.
The model simulation presented in this study shows a significant increase in the average gas temperature within the cylinder in the first 10 seconds of a 60 second fill.
The boundary and initial conditions for the simulation are listed in table 1 below.
Table 1: Boundary and initial conditions for the fast filling model simulation.
The results of those experiments will be used to validate the CFD model.
The model simulation presented in this study shows a significant increase in the average gas temperature within the cylinder in the first 10 seconds of a 60 second fill.
Online since: August 2013
Authors: Chong Wang, Zhi Hong Zhang, Bao Ren Li, Lei Gao, Qi Jie Li, Jian Nong Gu
Via analysis and calculation by CFD software, the results show that the pump can improve the glider’s resultant velocity and its horizontal velocity effectively.
Via analysis and calculation by CFD software, the following coefficients have been fitted.
Simulation and experiment results The simulation results are shown in the Fig.4, Fig.5 and Fig.6 respectively.
The experiment results are consistent with the simulation results in Fig.6.
It has been confirmed the simulation method is accurate.
Via analysis and calculation by CFD software, the following coefficients have been fitted.
Simulation and experiment results The simulation results are shown in the Fig.4, Fig.5 and Fig.6 respectively.
The experiment results are consistent with the simulation results in Fig.6.
It has been confirmed the simulation method is accurate.