Numerical Simulation and Experiment Research of the Whole Flow Field inside a Multi-Blade Centrifugal Fan

2012 ◽  
Vol 468-471 ◽  
pp. 2255-2258
Author(s):  
Feng Gao ◽  
Wei Yan Zhong
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Field Model ◽  
Pressure Field ◽  
Internal Flow ◽  
Centrifugal Fan ◽  
Simulation And Experiment ◽  
Overall Performance ◽  
Unsteady Numerical Simulation ◽  
Cfd Method

The full flow field model of a widely used multi-blade centrifugal was built, using the CFD method, the steady and unsteady numerical simulation of the inner flow in the fan at different working conditions are presented. The numerical simulation results were validated by contrasting to the experiment results. The results displayed the characteristics of the velocity field, pressure field and pressure fluctuate in the centrifugal fan. The results can provide basis for optimizing the fan design and the internal flow, and have important value of engineering applications in the increase of the overall performance in operation.

scholarly journals The Unsteady Numerical Simulation and Fluid-Structure Interaction Analysis of TLB600-700 Desulphurization Pump

2014 ◽  
Vol 6 ◽  
pp. 191697
Author(s):  
Xiaoke He ◽  
Jianrui Liu ◽  
Dengpeng Fu
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Design Method ◽  
Fluid Structure Interaction ◽  
Three Dimensional ◽  
Internal Flow ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Design Requirements ◽  
Unsteady Numerical Simulation

Based on the design theory of liquid-solid two-phase flow centrifugal pump, a new type TLB600-700 desulphurization pump was designed with huge distortions blades design method and impeller inlet super long extension blades design method. Three-dimensional model of internal flow field in TLB600-700 desulphurization pump was built by software PROE5.0, and the three-dimensional unsteady numerical simulation of the internal flow field was calculated, which revealed that the rotor-stator interaction between rotating impeller and volute is the reason why unstable flow generated. Statics analysis was carried out on the impeller in the stationary flow state with the method of fluid-structure interaction, and results indicated that the impeller strength and stiffness meet the design requirements. External characteristic test results of TLB600-700 desulphurization pump showed that all parameters of desulphurization pump designed by innovative method meet design requirements; especially the pump efficiency was increased by 4.15% higher than Chinese national standard.

The Numerical Simulation Research on Garbage Particles in Airflow Field of Horizontal Air-Separator under Different Conditions

2012 ◽  
Vol 518-523 ◽  
pp. 2263-2266
Author(s):  
Xin Le Yang ◽  
Shuo Yang
Keyword(s):  
Numerical Simulation ◽  
Velocity Field ◽  
Flow Field ◽  
Pressure Field ◽  
Internal Flow ◽  
Simulation Method ◽  
Separation Principle ◽  
Simulation Research ◽  
Airflow Field ◽  
Back Mixing

In air-separator’s operating condition, separation trajectory of air-separator’s internal garbage particles was obtained through comparison of ordinary and improved air-separator’s internal flow field in the numerical was simulated by FLUENT soft software and garbage particles’ flow rules and separation principle was revealed. The results show that velocity field and pressure field of improved horizontal air-separator’s changes smoothly and phenomenon of chaos and back-mixing can be avoided, furthermore, it realizes effective sorting for three different quality garbage particles. The numerical simulation method in this paper provides theoretical and technical way for optimizing the air-separator’s internal structure and improving air-separator’s performance.

Numerical Simulation of the 3D Turbulent Flow Field in a Cross-Flow Fan Used in the Air Conditioner

2012 ◽  
Vol 538-541 ◽  
pp. 462-465 ◽  
Author(s):  
Yong Chao Zhang ◽  
Qing Guang Chen ◽  
Wei Bin Wang ◽  
Bin Xie
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Turbulent Flow ◽  
3D Model ◽  
Cross Flow ◽  
Internal Flow ◽  
Air Conditioner ◽  
Full Field ◽  
Overall Performance ◽  
Cross Flow Fan

Aiming at a cross-flow fan used in some kind of air conditioner, the full field 3D model was built, and the numerical simulation of the inner turbulent flow under design condition is resented. The results display the characteristics of flow field in the cross-flow fan, especially the velocity field, pressure field and the velocity distributing before the evaporator. The results can provide basis for optimizing the fan design and the internal flow, and have important value of engineering applications in the increase of the overall performance in operation.

Study on Numerical Simulation of Internal Flow Field for the Multi Blade Centrifugal Fan

2014 ◽  
Vol 525 ◽  
pp. 251-255 ◽  
Author(s):  
Sheng Li Zhang ◽  
Hua Xing Li
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Design Theory ◽  
Design Method ◽  
Internal Flow ◽  
Numerical Results ◽  
Centrifugal Fan ◽  
Test Results ◽  
Traditional Design ◽  
Design Program

This paper points out that the traditional design method of multi blade centrifugal fan are great uncertainty in selecting the structure parameters: lead to many design results, do many tests. Internal flow field of multi blade centrifugal fan was simulated with the computational fluid dynamics software Fluent, and the numerical results are analyzed. Comparison of the numerical results with the test results shows that numerical simulation has good accuracy and reliability. The design program and a design example is gived according to the design theory of multi blade centrifugal fan. Method is verified by numerical simulation for the example. Test results show that the design program is reliable.

Numerical Simulation and Experiment Research on Aerodynamic Characteristics of a Multi-Blade Centrifugal Fan

2011 ◽  
Vol 317-319 ◽  
pp. 2157-2161
Author(s):  
Yong Chao Zhang ◽  
Qing Guang Chen ◽  
Yong Jian Zhang ◽  
Xiang Xing Jia
Keyword(s):  
Numerical Simulation ◽  
Stokes Equations ◽  
Three Dimensional ◽  
Simple Algorithm ◽  
Internal Flow ◽  
Aerodynamic Characteristics ◽  
Navier Stokes ◽  
Computational Domain ◽  
Centrifugal Fan ◽  
Cfd Method

The full flow field model of a widely used multi-blade centrifugal fan was built, and unstructured grids were used to discrete the computational domain. The moving reference frame is adopted to transfer data between the interfaces of the rotating field and the stationary field. Pressure boundary conditions are specified to the inlet and the outlet. The SIMPLE algorithm in conjunction with the RNG k-ε turbulent model was used to solve the three-dimensional Navier-Stokes equations. The steady and unsteady numerical simulations of the inner flow in the fan at different working conditions were presented using the CFD method. The numerical simulation results were validated by contrasting to the experiment results. The results displayed the characteristics of the velocity field, pressure field, pressure fluctuation at two monitoring points in the centrifugal fan. The results can provide basis for optimizing the fan design and the internal flow, and have important value of engineering applications in the increase of the overall performance in operation.

Analysis on Online Mixing Performance of Jet-Mixing Apparatus

2011 ◽  
Vol 347-353 ◽  
pp. 417-421
Author(s):  
Xi Chao Xu ◽  
Bai Jing Qiu ◽  
Bin Deng ◽  
Fang Wen Jia
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Design Method ◽  
Concentration Field ◽  
Internal Flow ◽  
Test Method ◽  
Jet Mixing ◽  
Mixing Performance ◽  
Simulation And Experiment ◽  
Interior Flow

Aimed at investigating the design method and test method of jet-mixing apparatus, numerical simulation and experiment research were both used to investigate the internal flow field of jet-mixing apparatus in this article. Numerical simulation scheme for interior flow field of jet-mixing apparatus was established, CFD software Fluent was used to investigate in concentration field of jet-mixing apparatus. The concept of IOS was brought forward to evaluate the homogeneity degree of pesticide and water. Investigation both carried on area ratio effect on the mix homogeneity of the jet-mixing apparatus and the distribution of pesticide concentration in the axial and radial of mixing tube.

scholarly journals The Internal Flow Field and Overall Performance of a Centrifugal Fan Impeller: Experiment and Prediction

1982 ◽  
Author(s):  
T. Wright ◽  
K. T. S. Tzou ◽  
K. W. Greaves ◽  
S. Madhavan
Keyword(s):  
Flow Field ◽  
Flow Behavior ◽  
Internal Flow ◽  
Inviscid Flow ◽  
Industrial Applications ◽  
Centrifugal Fan ◽  
Power Utility ◽  
Pressure Losses ◽  
Discharge Velocity ◽  
Overall Performance

Analytical and experimental procedures for determining the detailed internal flow behavior in the impeller of a centrifugal fan are presented. Predicted and measured values of both the detailed flow fields and overall performance of the impeller are shown to be in good agreement. The analytical procedures are based on a finite element method to predict the inviscid flow field, coupled to a semi-empirical determination of pressure losses in the impeller based on boundary layer calculations. The experimental work used to validate these predictions uses extensive surface pressure taps in the rotating impeller as well as information from inlet and discharge velocity traverses to determine overall performance. The purpose of this work is the development of accurate and reliable analytical tools for the design of air and gas moving equipment with improved performance and efficiency for the power utility market and heavy industrial applications.

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