2 edition of Application of finite element analysis to rotating fan impellers. found in the catalog.
Application of finite element analysis to rotating fan impellers.
Muhsin Jaber Juleeg
by University of Aston. Department of Mechanical Engineering in Birmingham
Written in English
Thesis (PhD) - University of Aston in Birmingham, 1983.
A finite element based method has been developed for computing time-averaged fluid-induced radial excitation forces and rotor dynamic forces on a two-dimensional centrifugal impeller rotating . The study on the fan impeller of the wind fire extinguisher, describes the type and structure of the fan impeller, and static strength and modal analysis are applied on the impeller by using the finite element method, replacing the traditional calculation method of strength and stiffness. The total deformation, stress distribution and vibration characteristics of the fan impeller are .
This will require a finite element analysis. Note with an older constant speed fan the life could be considerably reduced by using variable speed control and new impellers may be required. Carry out either a bump test of the existing impeller or an engineering analysis to determine impeller natural frequencies and ensure no dynamics problems. The air passes the blades twice at the inlet and the outlet of the impeller while a large vortex is noticeable inside the impeller which is located in the blading near the stabilizer. The numerical results are compared to Laser Doppler Velocity measurements and to steady calculations obtained by replacing the blades by a rotating force field.
J. Mackerle / Finite element computational dynamics of rotating systems  J. Mackerle, An information retrieval system for ﬁnite element and boundary element literature and software, Eng. Analysis with Boundary Elements 11 (), –  J. Mackerle, Finite Element Methods, A Guide to Information Sources, Elsevier, Amsterdam, The paper deals with determination of modal parameters of exhaust fan impeller. The aim of performed analysis was to investigate whether resonance is the cause of excessive operational vibration of the fan. The paper describes results of experimental measurement by which the natural frequencies of non-rotating impeller were determined. The resonance frequencies .
FREQUENCY ANALYSIS OF CENTRIFUGAL FAN IMPELLERS P. BALASUBRAMANIAN and V. RAMAMURTI Department 0/ Applied Mechanics, Indian Institute of Technology, MadrasIndia (Received 25 Novemberand in reuisedform 17 April ) The geometric periodicity is utilizedto determine the natural frequencies of centrifugal fan by: 9.
Effect of friction stir welding parameters (rotation and transverse) speed on the transient temperature distribution in friction stir welding of AA T53 Jweeg ‘Application of finite element analysis to rotating fan impellers’ Doctoral Thesis. J Muhsin.
Aston University, Analysis of friction stir welds. Part I. A centrifugal pump is a rot dynamic pump that uses a rotating impeller to increase the pressure of a fluid. Centrifugal pumps are ordinarily used to move liquids through a piping system.
The fluid enters the pump impeller on or almost the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute. Selection of types of blade are restricted to type of applications.
Design section of the blade provides the better performance of the pump. Composed of hub, hub plate, leading edge, shroud plate, impeller blade, trailing edge as shown in the Fig. 3 each component works accordingly to increase the pressurised output of the fluid.
Impeller bearing is the supporting Author: P. Prithvi Raj, P. Suresh Kumar Gupta, P. Praveen Kumar, G. Paramesh, K. Rohit. Result of variable thickness impeller with different angular velocity can also be brought in from external finite element analysis for post processing which is shown in figure 4.
Mohammed Mohaideen / Procedia Engineering 38 () â€“ Fig (4) Optimized fan impeller deflection; (5) Optimized fan impeller stress plot From Cited by: 7.
Representative finite element structural analysis results are shown in Figures and are seen to agree well with those given elsewhereII. A semi-loof element~3 was used.
A simplified fan impeller A simplified radial fan impeller consisting of a backsheet and blades was modelled and analysed. To improve the impeller safety and reliability of extractable explosion-proof contra-rotating axial fan for mine local ventilation, Extractable Fan FBDC№/2×30 was taken as the research object, and an approximate three-dimensional finite element computation model was built by using ANSYS software.
The stress and displacement were calculated, too. Combescure and A. Lazarus, “Refined finite element modelling for the vibration analysis of large rotating machines: application to the gas turbine modular helium reactor power conversion unit,” Journal of Sound and Vibration, vol.no.pp.
–, Finite element analysis is done on impeller for investigation of stresses and natural frequency. Keywords: within a fluid, typically a gas such as air. A fan consists of a rotating arrangement of vanes or blades which act on the air.
The axial flow fans Applications (IJERA) ISSN: Vol. 3, Issue 1, January. results by using ANSYS FLUENT (Finite Element Analysis Software).
The material of the fan impeller was specified as ALUMINIUM. Boundary conditions on the Centrifugal fan are taken from the reference. The flow distribution across the fan is. A finite element approach for three-dimensional analysis of potential flow through centrifugal pump impellers is presented.
Laplace equation is solved with proper boundary conditions. A technique to satisfy Kutta condition at the blade trailing edge is also described. segments in the analysis. Finite element Modeling: The problem of stress analysis in a centrifugal fan impeller can be accurately carried out through the use of finite element method, which is a powerful tool in modeling a fan structure and predicting its response [1,2].
4. CENTRIFUGAL FAN IMPELLER STRESS ANALYSIS This method is extended to the fat impeller stress analysis. The impeller is described in Fig. 5 and the 0 2 4 6 8 10 12 Fig. Comparison of radial displacements.
Fig. One sector of the fan impeller. Steady state stress analysis of centrifugal fan impellers Fig. Finite Element Methods (FEM) have become a key tool to predict stresses, deformations, eigenfrequencies and eigenmodes in centrifugal impellers under centrifugal loads. Accurate prediction of values of principal stresses and natural frequencies is critical to avoiding field failures of impellers.
velocity of fan when number of blades is taken as 10, 12 and 8. The design is to be changed to increase the efficiency of the fan and analysis is to be done on the fan by changing the materials Aluminum AlloyMild Steel and E Glass.
Analysis is done in finite element analysis. This paper is concerned with the finite element analysis and modal testing of an industrial radial flow impeller. The goal is to determine and verify the vibration characteristics of the impeller. METHODOLOGY: Modeling of pump impeller by using CATIA V5R20 ASSEMBLY Fig.
1 Assembly of Centrifugal Pump GEOMETRY Fig. 2 Geometry of Centrifugal Pump Impeller FEA MODEL: MESH GENERATION: In order to carry out a finite element analysis, the model we are using must be divided into a number of small pieces known as finite. The finite element method by ANSYS package was used to conduct the numerical analysis for this study, and a specific experimental test rig was built to verify the experimental results.
Results showed that increasing depth of the cracks will lead to reducing in the natural frequency and, as a result, increase instability in the shaft. describes results of experimental measurement by which the natural frequencies of non-rotating impeller were determined.
The resonance frequencies and mode shapes during the rotation were estimated by using Finite Element simulation. Keywords: modal analysis, excessive vibration, impeller, fan. Cite This Article. Our impeller design process relies on a combination of state-of-the-art fan engineering and grassroots experience in an array of industrial applications around the world.
That process includes Solid Works CAD system software, our Rapid Prototyping Machine, Finite Method Analysis, our Wind Tunnel, and generations of experience in impeller design.
The nominal rotation speed of the impeller is Concepts and Applications of Finite Element Analysis. dynamic displacement and stress of impellers. A finite element .CHAPTER 8 – FINITE ELEMENT ANALYSIS Finite Element Analysis (FEA) is a practical application of the Finite Element Method (FEM) for predicting the response behavior of structures or fluids to applied factors such as forces, pressures, heats, and vibrations.
Usually, the process starts with the creation of a geometric model. Then the.Design & Analysis of Centrifugal Pump Impeller by FEA Mane Pranav Rajanand, ME Student, Department of Mechanical Engineering V.V.P.
Institute of Engineering & Technology, Solapur, Maharashtra, India ***Abstract - A centrifugal pump is a rot dynamic pump that uses a rotating impeller to increase the pressure of a fluid.