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Online since: October 2010
Authors: Andreas Ludwig, Meng Huai Wu, Jing Hao, Monika Grasser
The so defined thermodynamic information is coupled with solidification simulation.
For this, CFD calculations are done with a two phase solidification model including mass, momentum, energy and concentration transfer and applied to semi-continuous casting of technical Bronze alloys.
The validated thermodynamic information is included in CFD calculations for solidification simulation based on the multiphase model published by the authors [6-9] and applied to Bronze semi-continuous casting.
Simulation Results.
The ternary thermodynamics is coupled to solidification simulation [11].
For this, CFD calculations are done with a two phase solidification model including mass, momentum, energy and concentration transfer and applied to semi-continuous casting of technical Bronze alloys.
The validated thermodynamic information is included in CFD calculations for solidification simulation based on the multiphase model published by the authors [6-9] and applied to Bronze semi-continuous casting.
Simulation Results.
The ternary thermodynamics is coupled to solidification simulation [11].
Online since: October 2011
Authors: Xiu Ling Ji, Hai Peng Wang, Shi Ming Zeng, Chen Yang Jia
Computational Fluid Dynamics (CFD) modeling and analysis of the spinning projectile with fixed canard are conducted to determine the lateral-directional aerodynamic coefficients at three supersonic speeds and various angles of attack.
Numerical simulations have the potential of greatly reducing design costs while providing a detailed understanding of the complex aerodynamics associated with each change.
The complete set of 3-D time-dependent Navier-Stokes equations is solved for the simulations of unsteady flows associated with spinning motion of projectiles.
Canard configuration The calculation region is shown in Figure 6, and the grid used in the simulations were structured meshes generated using ICEM.
Computational Fluid Dynamics (CFD) modeling and analysis of the spinning projectile with fixed canard have been conducted to determine the lateral-directional aerodynamic coefficients.
Numerical simulations have the potential of greatly reducing design costs while providing a detailed understanding of the complex aerodynamics associated with each change.
The complete set of 3-D time-dependent Navier-Stokes equations is solved for the simulations of unsteady flows associated with spinning motion of projectiles.
Canard configuration The calculation region is shown in Figure 6, and the grid used in the simulations were structured meshes generated using ICEM.
Computational Fluid Dynamics (CFD) modeling and analysis of the spinning projectile with fixed canard have been conducted to determine the lateral-directional aerodynamic coefficients.
Online since: October 2010
Authors: Jun Yao, Ye Feng Liu, Hua Zhang, Huan Huan Zhao, Yu Lin Cai, Hai Tao Huang
So the
temperature field was simulated by the application of the CFD software, as shown in Fig.2, Which
the actual temperature field was measured by the infrared imaging system.
Table 1 lists the results of simulation and measurement temperature field.
Comparing between simulation and measurement temperature data, it shows that simulation results are in good agreement with experimental data.
CFD method can solve the steady heat transfer.
The results demonstrate effectiveness of the simulation results.
Table 1 lists the results of simulation and measurement temperature field.
Comparing between simulation and measurement temperature data, it shows that simulation results are in good agreement with experimental data.
CFD method can solve the steady heat transfer.
The results demonstrate effectiveness of the simulation results.
Online since: November 2012
Authors: Chao Luo, Xiao Gang Yi, Dong Li, Zuo Liang Zhang
Generally, a steady solution of pressure information can be obtained based on traditional CFD simulation if the inlet velocity of pipe is time independent.
In the field of CFD, it is easy to result in numerical instability given the strong oscillation of fluid velocity.
Similarly, the simulation of amplitude 3.65m/s lasted 8.5s only (Fig. 8-c).
It is found that the residual of simulation with cavitation model is much lower than that of simulation without cavitation model (Fig. 10).
Besides, simulations with and without cavitation model are tested.
In the field of CFD, it is easy to result in numerical instability given the strong oscillation of fluid velocity.
Similarly, the simulation of amplitude 3.65m/s lasted 8.5s only (Fig. 8-c).
It is found that the residual of simulation with cavitation model is much lower than that of simulation without cavitation model (Fig. 10).
Besides, simulations with and without cavitation model are tested.
Online since: October 2011
Authors: Ali Sarosh, Dong Yun Feng, Muhammad Adnan
Numerical simulations of mixing enhancement have been studied by Mekkes et al [9], and results of numerical simulations of constant-area combustion by In-Seuck Jeung et al [10,11] are also important in this regard.
A numerical simulation (CFD) approach is applied whereby the total combustor length is constrained by the conditions that 80% or more of the combustion product species are formed, 90% or more of the maximum static pressure rise has occurred and temperature is no more than 2500K.
CFD Approach.
Aerothermodynamic-CFD Design Results Total Combustor Length.
Numerical simulations are carried out for reduction of scramjet combustor length.
A numerical simulation (CFD) approach is applied whereby the total combustor length is constrained by the conditions that 80% or more of the combustion product species are formed, 90% or more of the maximum static pressure rise has occurred and temperature is no more than 2500K.
CFD Approach.
Aerothermodynamic-CFD Design Results Total Combustor Length.
Numerical simulations are carried out for reduction of scramjet combustor length.
Online since: January 2016
Authors: Zainol Abidin Awang Sa, Aya Hagishima, Sheikh Ahmad Zaki, Azli Abd Razak
Zhang et al.[11] carried out a computational fluid dynamics (CFD) simulation and a wind tunnel experiment to examine pedestrian wind fields around three types of building arrays under 2 conditions of wind direction.
Hu & Yoshie[12] carried out CFD study on idealized urban block arrays based on typical residential area in Shanghai to evaluate the effects of building arrangement on ventilation efficiency indices under three wind directions.
Numerical simulation of the wind field around different building arrangements.
CFD simulation of airflow over a regular array of cubes.
Part I: Three-dimensional simulation of the flow and validation with wind-tunnel measurements.
Hu & Yoshie[12] carried out CFD study on idealized urban block arrays based on typical residential area in Shanghai to evaluate the effects of building arrangement on ventilation efficiency indices under three wind directions.
Numerical simulation of the wind field around different building arrangements.
CFD simulation of airflow over a regular array of cubes.
Part I: Three-dimensional simulation of the flow and validation with wind-tunnel measurements.
Online since: October 2014
Authors: Hai Jun Tian, Cun Yi Song, Zhen Song Tong
By using the turbulence model in Fluent.14 software, three-dimensional numerical simulation of dense phase in different flue gas entrance tower height of internal flow field.
It has made great economic benefits for using CFD to simulate and calculate numerical desulfurization reactor design , and according to the numerical results of desulfurization reactor optimization, Numerical simulation of rational use of CFD desulfurization system, not only can shorten the design cycle, reduce design cost, and can obviously improve the design quality, and its superiority is the traditional experimental methods are incomparable [1,2].
The simulation boundary conditions is entrance velocity and Pressure outlet.
Optimization Design of Semi-dry Flue Gas Desulphurization Reactor Based on The CFD.
Hydrodynamic Simulation and Optimized Design of a Large sized Flue Gas Desulfurizer.
It has made great economic benefits for using CFD to simulate and calculate numerical desulfurization reactor design , and according to the numerical results of desulfurization reactor optimization, Numerical simulation of rational use of CFD desulfurization system, not only can shorten the design cycle, reduce design cost, and can obviously improve the design quality, and its superiority is the traditional experimental methods are incomparable [1,2].
The simulation boundary conditions is entrance velocity and Pressure outlet.
Optimization Design of Semi-dry Flue Gas Desulphurization Reactor Based on The CFD.
Hydrodynamic Simulation and Optimized Design of a Large sized Flue Gas Desulfurizer.
Online since: January 2012
Authors: Esmail Poursaeidi, Maryam Mohammadi, Seyed Sina Khamesi
Effect of Flow Exit Angle and Blade Height on the Temperature Distribution of a Typical Gas Turbine Rotor Blade
Esmail Poursaeidi1,a, Maryam Mohammadi2,b ,Seyed Sina Khamesi3,c
1 Department of Mechanical Engineering, Zanjan University, Zanjan, Iran
2 Department of Mechanical Engineering, Zanjan University, Zanjan, Iran
3 Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Khorasan Razavi, Neyshabur, Iran
a epsaeidi@znu.ac.ir ,b mohammadi88.maryam@gmail.com, c sina.khamesi@gmail.com
Keywords: gas turbine blade, temperature distribution, blade height, flow exit angle, CFD analysis.
In the next section a CFD analysis based on finite volume method (FVM) is presented by using the real operational conditions of the turbine.
Flowchart computations Step II Geometry and mesh For exact and real simulation of the gas turbine moving blade at the first step, the general geometry of the design was characterized by using the industrial plans and gas turbine moving blade.
For simulation and perform the finite volume computations a proper mesh is required, that Gambit 2.3 software was used for this purpose.
Heat transfer rate of blades Blade height [m] Heat transfer rate[w] Optimized blade (0.212 m) 934568.5 Real blade (0.220m) 933865.3 References [1] POURSAIDI, E., KHAMESI, S.S., AND MOHAMMADI, M., 2011: “DESIGN A TYPICAL GAS TURBINE BASED ON THERMODYNAMIC RELATIONS AND CFD ANALYSIS OF ITS ROTOR BLADE”, ASME-JSME-KSME JOINT FLUIDS ENGINEERING CONFERENCE 2011, 24-29 JULY, HAMAMATSU, JAPAN
In the next section a CFD analysis based on finite volume method (FVM) is presented by using the real operational conditions of the turbine.
Flowchart computations Step II Geometry and mesh For exact and real simulation of the gas turbine moving blade at the first step, the general geometry of the design was characterized by using the industrial plans and gas turbine moving blade.
For simulation and perform the finite volume computations a proper mesh is required, that Gambit 2.3 software was used for this purpose.
Heat transfer rate of blades Blade height [m] Heat transfer rate[w] Optimized blade (0.212 m) 934568.5 Real blade (0.220m) 933865.3 References [1] POURSAIDI, E., KHAMESI, S.S., AND MOHAMMADI, M., 2011: “DESIGN A TYPICAL GAS TURBINE BASED ON THERMODYNAMIC RELATIONS AND CFD ANALYSIS OF ITS ROTOR BLADE”, ASME-JSME-KSME JOINT FLUIDS ENGINEERING CONFERENCE 2011, 24-29 JULY, HAMAMATSU, JAPAN
Online since: October 2021
Authors: Akii Okonigbon Akaehomen Ibhadode, Abhulimhen Solomon Okouzi, Albert Imuetinyan Obanor
Presenting a numerical simulation of the airflow inside a hybrid solar-electrical dryer, [12] used ANSYS-CFX 11 software package, which is a general purpose CFD package that includes a solver based on the finite volumes method for structured and unstructured grids.
The numerical simulations were implemented using the Reynolds-Averaged Navier-Stokes (RANS) equations.
[16] employed CFD to perform simulations of steady state forced and natural convection greenhouse dryer with modifications to identify the temperature distribution with variation in wind velocity.
Mujumdar, Basic process calculations and simulations in drying, Fundamental aspects, in: A.S.
Sun, Applications of computational fluid dynamics (CFD) in the food industry: A review, Computers and Electronics in Agriculture. 34 (2002) 5–24
The numerical simulations were implemented using the Reynolds-Averaged Navier-Stokes (RANS) equations.
[16] employed CFD to perform simulations of steady state forced and natural convection greenhouse dryer with modifications to identify the temperature distribution with variation in wind velocity.
Mujumdar, Basic process calculations and simulations in drying, Fundamental aspects, in: A.S.
Sun, Applications of computational fluid dynamics (CFD) in the food industry: A review, Computers and Electronics in Agriculture. 34 (2002) 5–24
Online since: June 2022
Authors: Ajaya Bharti, G. Naga Srinivasulu, Naveen Kumar, Devendra Prasad, Venkateswarlu Velisala, Akhilesh Kumar Chauhan
SOLIDWORKS produces a 3-D numerical CFD design for four new flow field pattern designs: leaf design, lung design, single-serpentine, and triple-serpentine.
Computational fluid mobility (CFD) is used to analyze many bipolar plate patterns.
Numerical simulation results showed high performance compared to experimental results.
Meshing After the geometry construction, the ANSYS 15.0 ICM CFD programme was used to do the discretization.
Passed standards were accepted for simulation from previous literature.
Computational fluid mobility (CFD) is used to analyze many bipolar plate patterns.
Numerical simulation results showed high performance compared to experimental results.
Meshing After the geometry construction, the ANSYS 15.0 ICM CFD programme was used to do the discretization.
Passed standards were accepted for simulation from previous literature.