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Online since: July 2023
Authors: Elizaldo Domingues dos Santos, Liércio André Isoldi, Luiz Alberto Oliveira Rocha, Giovanni Antonio Vielma Vivas, Michel Kepes Rodrigues, Ruth da Silva Brum
However, a small increase in the values of the liquid
fraction at 48 h was observed, that is, at the end of the simulation, when compared to those reached
at 24 h.
The simulations carried out for this work represent a time interval of 2 years.
Here we used the same configuration in Fluent described in section 2.3, with the exception that the simulation time was 15 and a half days.
Santos, Thermal performance simulations of Earth-Air Heat Exchangers for different soils of a coastal city using in-situ data, Sustain.
Wilcox, Turbulence Modeling For CFD, third ed., DCW Industries, California, 2006
The simulations carried out for this work represent a time interval of 2 years.
Here we used the same configuration in Fluent described in section 2.3, with the exception that the simulation time was 15 and a half days.
Santos, Thermal performance simulations of Earth-Air Heat Exchangers for different soils of a coastal city using in-situ data, Sustain.
Wilcox, Turbulence Modeling For CFD, third ed., DCW Industries, California, 2006
Online since: February 2015
Authors: E.M.A. Pereira, J.V. Silva, T.H.F. Andrade, S.R. de Farias Neto, A.G. Barbosa de Lima
Table 1 - Physical and geometrical parameters used in the simulations of the rough rice grain drying.
The mesh representing the bean grain was generated by using the ICEM CFD software.
Figure 3 - (a) Numerical mesh of the bean and (b) details of the mesh used in the simulation.
Table 2 - Physical and geometrical parameters used in the simulations of the “mulatinho” bean grains drying.
Somchart, Simulation and grain quality for in-store drying of paddy, J.
The mesh representing the bean grain was generated by using the ICEM CFD software.
Figure 3 - (a) Numerical mesh of the bean and (b) details of the mesh used in the simulation.
Table 2 - Physical and geometrical parameters used in the simulations of the “mulatinho” bean grains drying.
Somchart, Simulation and grain quality for in-store drying of paddy, J.
Online since: September 2013
Authors: Rui Nie, Da Wei Li, Jin Hao Qiu, Hong Li Ji
The amplitude is ranged from 0.0005c to 0.003c in the simulation.
The pressure distribution is another parameter to verify the method of simulation.
Simulation of two dimension model 4.1.
The simulation method can be using to study the effect of active control
The CFD results predicted that the drag coefficient is increased when the vibrational amplitude A+ exceed 2.4.
The pressure distribution is another parameter to verify the method of simulation.
Simulation of two dimension model 4.1.
The simulation method can be using to study the effect of active control
The CFD results predicted that the drag coefficient is increased when the vibrational amplitude A+ exceed 2.4.
Online since: January 2019
Authors: E.A. Bonifaz
The current status of FSW research has been well summarized by Mishra and Ma [2], but despite of significant advances the basic knowledge is not sufficient to achieve reliable simulations.
Fourment, A 3D numerical simulation of different phases of friction stir welding, Modelling Simul.
Nelson, Friction model for friction stir welding process simulation: Calibrations from welding experiments, International Journal of Machine Tools & Manufacture 50 (2010) 143–155
Shercliff, 3-Dimensional CFD modeling of flow round a threaded friction stir welding tool profile, J.
Failla II, Friction Stir Welding and Microstructure Simulation of HSLA-65 and Austenitic Stainless Steels, Welding Engineering MS Thesis at the Ohio State University, 2009
Fourment, A 3D numerical simulation of different phases of friction stir welding, Modelling Simul.
Nelson, Friction model for friction stir welding process simulation: Calibrations from welding experiments, International Journal of Machine Tools & Manufacture 50 (2010) 143–155
Shercliff, 3-Dimensional CFD modeling of flow round a threaded friction stir welding tool profile, J.
Failla II, Friction Stir Welding and Microstructure Simulation of HSLA-65 and Austenitic Stainless Steels, Welding Engineering MS Thesis at the Ohio State University, 2009
Online since: October 2013
Authors: Yuan Tong Gu, Prasad K.D.V. Yarlagadda, Beat Schmutz, Michael Schuetz, Javad Malekani
This paper discusses about the parameters affecting simulation of deforming a distal tibial orthopedic bone plate.
But inaccuracy of the results can be under %2 which is excellent for most of numerical simulations
Also less computational time is needed for 2D simulations.
[28] Ferziger, Joel H and Peric, Milovan, Further discussion of numerical errors in CFD.
[34] Bernstein, Joshua, Higher Returns on the Simulation Investment.
But inaccuracy of the results can be under %2 which is excellent for most of numerical simulations
Also less computational time is needed for 2D simulations.
[28] Ferziger, Joel H and Peric, Milovan, Further discussion of numerical errors in CFD.
[34] Bernstein, Joshua, Higher Returns on the Simulation Investment.
Online since: October 2013
Authors: Xiao Rui Cheng, Wei Li Guo, Nan Zhang, Yang Gao, Ren Nian Li
The numerical simulation and experimental research of the transient flow in centrifugal pump start-up process [D].
CFD-Driving Pump Design Forward [J].World Pumps, 2002,18-22
The two-dimensional numerical simulation of internal transient flow in centrifugal pump start-up process[J].
The vane pump start-up characteristic simulation based on bond graph method [J].
Numerical simulation of centrifugal pump start-up process[J].
CFD-Driving Pump Design Forward [J].World Pumps, 2002,18-22
The two-dimensional numerical simulation of internal transient flow in centrifugal pump start-up process[J].
The vane pump start-up characteristic simulation based on bond graph method [J].
Numerical simulation of centrifugal pump start-up process[J].
Online since: April 2016
Authors: Oliver Sommer, Günter Wozniak
Abstract
In our study we examined the behaviour of thin liquid layers at curved solid edges experimentally and numerically by coating investigations based on the laser-induced fluorescence technique (LIF) and by numerical film simulations based on the Volume-of-Fluid multiphase flow model (VOF), respectively.
The corresponding numerical flow simulation was based on the Volume-of-Fluid multiphase flow model using the commercially available CFD-program STAR-CCM+® from cd-adapcoTM.
This quite similar geometrical setup to the experimental investigation resulted in an optimal simulation time effort for the whole parameter study.
One reason for that is that the simulation does not take into account influencing effects like Rayleigh-Bénard- or Marangoni-convections mentioned in the introduction.
Eventually, an effect of dewetting within the curved surface area of the substrate was observed when the substrate edge radius of curvature was too small in the experimental coating investigations as well as in the numerical film simulations, respectively.
The corresponding numerical flow simulation was based on the Volume-of-Fluid multiphase flow model using the commercially available CFD-program STAR-CCM+® from cd-adapcoTM.
This quite similar geometrical setup to the experimental investigation resulted in an optimal simulation time effort for the whole parameter study.
One reason for that is that the simulation does not take into account influencing effects like Rayleigh-Bénard- or Marangoni-convections mentioned in the introduction.
Eventually, an effect of dewetting within the curved surface area of the substrate was observed when the substrate edge radius of curvature was too small in the experimental coating investigations as well as in the numerical film simulations, respectively.
Online since: March 2022
Authors: Fayçal Bouzit, Mohamed Bouzit, Mourad Mokeddem
The two studies [10,11] were completed by Mokaddem et al. [25] by performing 3D numerical simulations to properly analyze the effect of thermal buoyancy and Dean's number on Dean vortices, fluid flow and heat transfer at a 180 ° curved pipe with a square cross section.
Validation test The Simulation was realized by using the commercial CFD package called ANSYS-CFX.
Fig. 2: Typical grid used for simulation.
Simulation of power-law fluids and mixed convection heat transfer inside of curved duct.
[25] Mourad Mokeddem, Houssem Laidoudi, Mohamed Bouzit, 3D Simulation of Dean Vortices at 30°Position of 180°Curved Duct of Square Cross-Section under Opposing Buoyancy, Defect and Diffusion Forum, 389 (2018) 153-163
Validation test The Simulation was realized by using the commercial CFD package called ANSYS-CFX.
Fig. 2: Typical grid used for simulation.
Simulation of power-law fluids and mixed convection heat transfer inside of curved duct.
[25] Mourad Mokeddem, Houssem Laidoudi, Mohamed Bouzit, 3D Simulation of Dean Vortices at 30°Position of 180°Curved Duct of Square Cross-Section under Opposing Buoyancy, Defect and Diffusion Forum, 389 (2018) 153-163
Online since: August 2013
Authors: Mazlan A. Wahid, Hussein A. Mohammed, Nur Irmawati Om
For the radiation model, P1 method is used in the simulation and it is based on the expansion of the radiation intensity.
Hexagonal elements grid and non-uniform system are utilized in the simulations.
Simulations are performed for different Rayleigh numbers in the range of 2×106 ≤ Ra ≤ 2 × 107 and different Reynolds numbers in the range of 100 ≤ Re ≤ 1000.
Combined heat and mass transfer for laminar flow of moist air in a 3D rectangular duct: CFD simulation and validation with experimental data.
Direct numerical simulation of three-dimensional flow and augmented heat transfer in a grooved channel.
Hexagonal elements grid and non-uniform system are utilized in the simulations.
Simulations are performed for different Rayleigh numbers in the range of 2×106 ≤ Ra ≤ 2 × 107 and different Reynolds numbers in the range of 100 ≤ Re ≤ 1000.
Combined heat and mass transfer for laminar flow of moist air in a 3D rectangular duct: CFD simulation and validation with experimental data.
Direct numerical simulation of three-dimensional flow and augmented heat transfer in a grooved channel.
Online since: September 2011
Authors: Guo Zhong Wu, Jing Wang, Dong Li, Yan Zhao
The two-dimensional unsteady heat transfer models of common roof, insulation roof and phase change roof were established, and the thermal characteristics of common roof, insulation roof and phase change roof with different phase transition temperature were analyzed based on CFD software, the hourly average temperature distribution of their top and bottom surface from initial stage to steady stage and 24-hour hourly average temperature distribution of and average heat flux of bottom surface in steady stage were also attained.
Ding Li Feng[10] and others processed unsteady state heat transfer simulation on the roof which were added with phase change material or insulating material on outer and inner surface in hot summer and cold winter zone, and found whatever under the constant temperature or the cool storage mode, the effect of insulation material on reducing air conditioning energy consumption was better than the phase change material.
As the phase change heat transfer process was strongly nonlinear, the solution of the superposition principle could not be used, so we used FLUENT software to achieve the numerical simulation of heat transfer process of various roofs.
Simulation and Designing of PCM Wallboard Rooms Combined with Night Ventilation.
Ding Li Feng[10] and others processed unsteady state heat transfer simulation on the roof which were added with phase change material or insulating material on outer and inner surface in hot summer and cold winter zone, and found whatever under the constant temperature or the cool storage mode, the effect of insulation material on reducing air conditioning energy consumption was better than the phase change material.
As the phase change heat transfer process was strongly nonlinear, the solution of the superposition principle could not be used, so we used FLUENT software to achieve the numerical simulation of heat transfer process of various roofs.
Simulation and Designing of PCM Wallboard Rooms Combined with Night Ventilation.