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Kwang-yong Kim - One of the best experts on this subject based on the ideXlab platform.

  • Original Paper Numerical Investigation on Aerodynamic Performance of a Centrifugal Fan with Splitter Blades
    2016
    Co-Authors: Jin-hyuk Kim, Kwang-yong Kim, Kyung-hun Cha, Choon-man Jang
    Abstract:

    This paper presents a numerical investigation on the aerodynamic performance according to the application of splitter blades in an impeller of a Centrifugal Fan used for a refuse collection system. Numerical analysis of a Centrifugal Fan was carried out by solving three-dimensional Reynolds-averaged Navier-Stokes equations with the shear stress transport turbulence model. A validation of numerical results was conducted by comparison with experimental data for the pressure and efficiency. From analyses of the internal flow field of the reference Fan, the losses by the reverse-flows were observed in the region of the blade passage. In order to reduce these losses and enhance Fan performance, two splitter blades were applied evenly between the main blades, and Centrifugal impellers having the different numbers of the main blades were tested with their application. Throughout the numerical analyses of the Centrifugal Fan with splitter blades, it was found that the reverse-flow regions in the blade passage can be reduced by controlling the main blade numbers with splitter blades. The application of splitter blades in a Centrifugal Fan leads to significant improvement in the overall Fan performance

  • Design Optimization of a Centrifugal Fan with Splitter Blades
    International Journal of Turbo & Jet-engines, 2015
    Co-Authors: Man-woong Heo, Jin-hyuk Kim, Kwang-yong Kim
    Abstract:

    AbstractMulti-objective optimization of a Centrifugal Fan with additionally installed splitter blades was performed to simultaneously maximize the efficiency and pressure rise using three-dimensional Reynolds-averaged Navier-Stokes equations and hybrid multi-objective evolutionary algorithm. Two design variables defining the location of splitter, and the height ratio between inlet and outlet of impeller were selected for the optimization. In addition, the aerodynamic characteristics of the Centrifugal Fan were investigated with the variation of design variables in the design space. Latin hypercube sampling was used to select the training points, and response surface approximation models were constructed as surrogate models of the objective functions. With the optimization, both the efficiency and pressure rise of the Centrifugal Fan with splitter blades were improved considerably compared to the reference model.

  • Parametric Study on Aerodynamic Performance of a Centrifugal Fan with Additionally Installed Splitter Blades
    Volume 1B Symposia: Fluid Machinery; Fluid Power; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in , 2013
    Co-Authors: Man-woong Heo, Jin-hyuk Kim, Kyung-hun Cha, Kwang-yong Kim
    Abstract:

    Aerodynamic Performance of a Centrifugal Fan with additionally installed splitter blades in the impeller has been investigated numerically using three-dimensional Reynolds-averaged Navier-Stokes equations. The shear stress transport turbulence model and hexahedral grids system were used to analyze the flow in the Centrifugal Fan. From results of the flow analysis, considerable energy loss by flow separation was observed in the blade passages. Splitter blades were applied between the main blades to reduce the loss and enhance Fan performance. The chord length ratio of splitter to main blade, the angle between splitter and main blade, and the height ratio of outlet and inlet of impeller were selected as the geometric parameters, and their effects on the aerodynamic performance of the Centrifugal Fan have been investigated. The performance of the Centrifugal Fan with added splitter blades was improved conspicuously compared to the Centrifugal Fan without splitter blades. It was found that the installation of splitter blades in the impeller is effective to improve the aerodynamic performance of a Centrifugal Fan by reducing the flow separation generated between main blades in the impeller.Copyright © 2013 by ASME

  • Parametric study on a forward-curved blades Centrifugal Fan with an impeller separated by an annular plate
    Journal of Mechanical Science and Technology, 2013
    Co-Authors: Jin-hyuk Kim, Kyung-hun Cha, Kwang-yong Kim
    Abstract:

    A parametric study on the geometry of an impeller in a forward-curved blades Centrifugal Fan for residential ventilation has been carried out in this work. Numerical analysis of a forward-curved blades Centrifugal Fan was carried out by solving three-dimensional Reynolds-averaged Navier-Stokes equations with the shear stress transport turbulence model. A validation of numerical results was conducted by comparison with experimental data for the pressure and efficiency. The impeller separated by an annular plate was employed, and the annular plate height and the angle between the upper and lower impellers were selected as the geometric parameters to investigate their effects on the efficiency of the forward-curved blades Centrifugal Fan. Additionally, the impeller geometry having the highest efficiency was tested with the number and exit angle of blades. The results show that the impeller with properly installed annular plate improves the aerodynamic performance of the forward-curved blades Centrifugal Fan.

  • Numerical Investigation on Aerodynamic Performance of a Centrifugal Fan with Splitter Blades
    International Journal of Fluid Machinery and Systems, 2012
    Co-Authors: Jin-hyuk Kim, Kwang-yong Kim, Kyung-hun Cha, Choon-man Jang
    Abstract:

    This paper presents a numerical investigation on the aerodynamic performance according to the application of splitter blades in an impeller of a Centrifugal Fan used for a refuse collection system. Numerical analysis of a Centrifugal Fan was carried out by solving three-dimensional Reynolds-averaged Navier-Stokes equations with the shear stress transport turbulence model. A validation of numerical results was conducted by comparison with experimental data for the pressure and efficiency. From analyses of the internal flow field of the reference Fan, the losses by the reverse-flows were observed in the region of the blade passage. In order to reduce these losses and enhance Fan performance, two splitter blades were applied evenly between the main blades, and Centrifugal impellers having the different numbers of the main blades were tested with their application. Throughout the numerical analyses of the Centrifugal Fan with splitter blades, it was found that the reverse-flow regions in the blade passage can be reduced by controlling the main blade numbers with splitter blades. The application of splitter blades in a Centrifugal Fan leads to significant improvement in the overall Fan performance.

Li Xiang Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Parameterized Drafting System for Main Parts of Centrifugal Fan
    Applied Mechanics and Materials, 2011
    Co-Authors: Yan Gui, Di Lin Pan, Li Xiang Zhang
    Abstract:

    The parameterized drafting technology an database, which is used in diagram drafting of Centrifugal Fan, is introduced in this paper. The parameterized drafting system for main parts of Centrifugal Fan is developed by VBA under the circumstances of AutoCAD 2000. The paper introduced the realizing process of drafting principle and system function in detail.

  • Study on CAD System of Centrifugal Fan
    Advanced Materials Research, 2011
    Co-Authors: Yan Gui, Di Lin Pan, Li Xiang Zhang
    Abstract:

    The paper develops a special CAD system for the Centrifugal Fan. The system can realize the automatic selection,aerodynamic design calculation,main parts parameterized drawing and other functions of the Fan. It avoids the repetition of the manual labor and enhances the working efficiency and the cartography quality. On the base of the research on the selecting method and regularity of the main parameters of a large number of existing high performance Centrifugal Fans, the paper provides a new method, which determines the main geometric parameters of Centrifugal impeller.

Jin-hyuk Kim - One of the best experts on this subject based on the ideXlab platform.

  • Original Paper Numerical Investigation on Aerodynamic Performance of a Centrifugal Fan with Splitter Blades
    2016
    Co-Authors: Jin-hyuk Kim, Kwang-yong Kim, Kyung-hun Cha, Choon-man Jang
    Abstract:

    This paper presents a numerical investigation on the aerodynamic performance according to the application of splitter blades in an impeller of a Centrifugal Fan used for a refuse collection system. Numerical analysis of a Centrifugal Fan was carried out by solving three-dimensional Reynolds-averaged Navier-Stokes equations with the shear stress transport turbulence model. A validation of numerical results was conducted by comparison with experimental data for the pressure and efficiency. From analyses of the internal flow field of the reference Fan, the losses by the reverse-flows were observed in the region of the blade passage. In order to reduce these losses and enhance Fan performance, two splitter blades were applied evenly between the main blades, and Centrifugal impellers having the different numbers of the main blades were tested with their application. Throughout the numerical analyses of the Centrifugal Fan with splitter blades, it was found that the reverse-flow regions in the blade passage can be reduced by controlling the main blade numbers with splitter blades. The application of splitter blades in a Centrifugal Fan leads to significant improvement in the overall Fan performance

  • Design Optimization of a Centrifugal Fan with Splitter Blades
    International Journal of Turbo & Jet-engines, 2015
    Co-Authors: Man-woong Heo, Jin-hyuk Kim, Kwang-yong Kim
    Abstract:

    AbstractMulti-objective optimization of a Centrifugal Fan with additionally installed splitter blades was performed to simultaneously maximize the efficiency and pressure rise using three-dimensional Reynolds-averaged Navier-Stokes equations and hybrid multi-objective evolutionary algorithm. Two design variables defining the location of splitter, and the height ratio between inlet and outlet of impeller were selected for the optimization. In addition, the aerodynamic characteristics of the Centrifugal Fan were investigated with the variation of design variables in the design space. Latin hypercube sampling was used to select the training points, and response surface approximation models were constructed as surrogate models of the objective functions. With the optimization, both the efficiency and pressure rise of the Centrifugal Fan with splitter blades were improved considerably compared to the reference model.

  • Parametric Study on Aerodynamic Performance of a Centrifugal Fan with Additionally Installed Splitter Blades
    Volume 1B Symposia: Fluid Machinery; Fluid Power; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in , 2013
    Co-Authors: Man-woong Heo, Jin-hyuk Kim, Kyung-hun Cha, Kwang-yong Kim
    Abstract:

    Aerodynamic Performance of a Centrifugal Fan with additionally installed splitter blades in the impeller has been investigated numerically using three-dimensional Reynolds-averaged Navier-Stokes equations. The shear stress transport turbulence model and hexahedral grids system were used to analyze the flow in the Centrifugal Fan. From results of the flow analysis, considerable energy loss by flow separation was observed in the blade passages. Splitter blades were applied between the main blades to reduce the loss and enhance Fan performance. The chord length ratio of splitter to main blade, the angle between splitter and main blade, and the height ratio of outlet and inlet of impeller were selected as the geometric parameters, and their effects on the aerodynamic performance of the Centrifugal Fan have been investigated. The performance of the Centrifugal Fan with added splitter blades was improved conspicuously compared to the Centrifugal Fan without splitter blades. It was found that the installation of splitter blades in the impeller is effective to improve the aerodynamic performance of a Centrifugal Fan by reducing the flow separation generated between main blades in the impeller.Copyright © 2013 by ASME

  • Parametric study on a forward-curved blades Centrifugal Fan with an impeller separated by an annular plate
    Journal of Mechanical Science and Technology, 2013
    Co-Authors: Jin-hyuk Kim, Kyung-hun Cha, Kwang-yong Kim
    Abstract:

    A parametric study on the geometry of an impeller in a forward-curved blades Centrifugal Fan for residential ventilation has been carried out in this work. Numerical analysis of a forward-curved blades Centrifugal Fan was carried out by solving three-dimensional Reynolds-averaged Navier-Stokes equations with the shear stress transport turbulence model. A validation of numerical results was conducted by comparison with experimental data for the pressure and efficiency. The impeller separated by an annular plate was employed, and the annular plate height and the angle between the upper and lower impellers were selected as the geometric parameters to investigate their effects on the efficiency of the forward-curved blades Centrifugal Fan. Additionally, the impeller geometry having the highest efficiency was tested with the number and exit angle of blades. The results show that the impeller with properly installed annular plate improves the aerodynamic performance of the forward-curved blades Centrifugal Fan.

  • Numerical Investigation on Aerodynamic Performance of a Centrifugal Fan with Splitter Blades
    International Journal of Fluid Machinery and Systems, 2012
    Co-Authors: Jin-hyuk Kim, Kwang-yong Kim, Kyung-hun Cha, Choon-man Jang
    Abstract:

    This paper presents a numerical investigation on the aerodynamic performance according to the application of splitter blades in an impeller of a Centrifugal Fan used for a refuse collection system. Numerical analysis of a Centrifugal Fan was carried out by solving three-dimensional Reynolds-averaged Navier-Stokes equations with the shear stress transport turbulence model. A validation of numerical results was conducted by comparison with experimental data for the pressure and efficiency. From analyses of the internal flow field of the reference Fan, the losses by the reverse-flows were observed in the region of the blade passage. In order to reduce these losses and enhance Fan performance, two splitter blades were applied evenly between the main blades, and Centrifugal impellers having the different numbers of the main blades were tested with their application. Throughout the numerical analyses of the Centrifugal Fan with splitter blades, it was found that the reverse-flow regions in the blade passage can be reduced by controlling the main blade numbers with splitter blades. The application of splitter blades in a Centrifugal Fan leads to significant improvement in the overall Fan performance.

Wang Rong - One of the best experts on this subject based on the ideXlab platform.

  • Experiment Study on the Suction Characteristic of Serial Centrifugal Fan
    Journal of Agricultural Mechanization Research, 2006
    Co-Authors: Wang Rong
    Abstract:

    Centrifugal Fan is one of the most familiar Fans; it applies broadly in the field of country economy. Based on the test of the single Centrifugal Fan, suction characteristic of the Centrifugal Fan in series is carried out. The work conditions for the Centrifugal Fan in series and the relationship between the single Fan and Fans in series are pointed out .References are given for selecting the parameters of Fans in series.

  • Experiment Study on the Critical Point of Serial Centrifugal Fan
    Journal of Henan University of Science & Technology, 2006
    Co-Authors: Wang Rong
    Abstract:

    Based on the standard test rig,experiments on the suction characteristic of single Centrifugal Fan and the critical point of the serial Centrifugal Fan are carried out.The critical curves of serial Fan are drawn.The results show that critical curves of serial Fan will decline when the speed of the stationary Fan is increased.As the speed of one Fan is increased,the performances of serial Fan can not always be improved.This paper offers experiential evidence for select parameters of the serial Centrifugal Fan.

Yan Gui - One of the best experts on this subject based on the ideXlab platform.

  • Parameterized Drafting System for Main Parts of Centrifugal Fan
    Applied Mechanics and Materials, 2011
    Co-Authors: Yan Gui, Di Lin Pan, Li Xiang Zhang
    Abstract:

    The parameterized drafting technology an database, which is used in diagram drafting of Centrifugal Fan, is introduced in this paper. The parameterized drafting system for main parts of Centrifugal Fan is developed by VBA under the circumstances of AutoCAD 2000. The paper introduced the realizing process of drafting principle and system function in detail.

  • Study on CAD System of Centrifugal Fan
    Advanced Materials Research, 2011
    Co-Authors: Yan Gui, Di Lin Pan, Li Xiang Zhang
    Abstract:

    The paper develops a special CAD system for the Centrifugal Fan. The system can realize the automatic selection,aerodynamic design calculation,main parts parameterized drawing and other functions of the Fan. It avoids the repetition of the manual labor and enhances the working efficiency and the cartography quality. On the base of the research on the selecting method and regularity of the main parameters of a large number of existing high performance Centrifugal Fans, the paper provides a new method, which determines the main geometric parameters of Centrifugal impeller.