Study of the Performance Characteristics of an Axial Flow Fan Using CFD PDF Download
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Author: Rama S. Akula
Publisher:
ISBN:
Category : Axial flow
Languages : en
Pages : 152
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Book Description
Author: Rama S. Akula
Publisher:
ISBN:
Category : Axial flow
Languages : en
Pages : 152
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Book Description
Author: A. B. McKenzie
Publisher: Ashgate Publishing
ISBN:
Category : Science
Languages : en
Pages : 290
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Book Description
Provides readers with an understanding of aerodynamic design and performance of fans and compressors. The book includes practical emphasis on design problems, experimental facilities and data analysis, together with some design examples and novel concepts.
Author: Shine Jude Hamilton Antony
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659455049
Category :
Languages : en
Pages : 104
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Book Description
Axial fans are extensively used in industries for various applications such as mine ventilation, air conditioning system, heat exchangers, and so forth. In the view of low head produced by an axial flow impeller, drag acquires greater importance in axial flow impellers than that of centrifugal and mixed flow impellers. The axial fan performance strongly linked to aerodynamic properties of the blades, so the main objective is to analyze the fluid flow through an axial fan impeller with aerofoil cross-section. This project work presents the Modeling and CFD (Computational Fluid Dynamics) analysis of 2-D and 3-D flow field through an axial flow fan rotor. The aim of the project is to find the aerodynamic performance and analysis of fluid flow through an axial flow fan. The main purpose of this work is to analyze the nature of fluid flow through an axial flow fan at designed and off designed conditions using turbulence model. Here, k-turbulence model is used for CFD analysis.
Author: R. A. Wallis
Publisher: Academic Press
ISBN: 1483274225
Category : Technology & Engineering
Languages : en
Pages : 381
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Book Description
Axial Flow Fans: Design and Practice focuses on the design of axial flow fans and the practices involved in their applications. The manuscript first offers information on the fluid mechanics of ducted fans, boundary layer and skin friction relations, and aerofoil data for blade design. Discussions focus on flow deflection in cascade of aerofoils, pitching moment, lift, surface roughness in turbulent boundary layers, turbulent boundary layers in pressure gradients, laminar skin friction, viscosity and boundary layers, and similarity and non-dimensional numbers. The text then ponders on vortex flows in ducting and fan, ducts, and introduction to fan design methods. The book takes a look at the momentum and blade element considerations on free vortex flow of rotor and rotor losses. Topics include momentum considerations, profile drag, tip clearance losses, optimum conditions in terms of the flow and swirl coefficients, pressure relations and velocity vectors, and thrust and torque gradients. Tail fairing design and associated losses, overall efficiencies, torque, thrust, and power, and the design of fan unit with arbitrary vortex flow are also discussed. The publication is a dependable source of information for engineers and readers interested in the design of axial flow fans and practices involved in their operation.
Author: Curt Keller
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 166
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Book Description
Author: R. A. Wallis
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 464
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Book Description
Covers the theory, design, analysis, testing, and research of axial flow fans. Contains up-to-date data on recent developments in the field. Interrelates fan and duct design techniques. Discusses commercial and product development test procedures. Covers future experimental research objectives. Includes a reference section on F-series of airfoils.
Author: IMechE (Institution of Mechanical Engineers)
Publisher: John Wiley & Sons
ISBN: 9781860584756
Category : Technology & Engineering
Languages : en
Pages : 390
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Book Description
Fans are probably the most commonly used machines – from computers to power station boilers, they come in all shapes and sizes. In today’s ever more demanding marketplace companies are evolving fans that are more efficient, quieter, and cheaper to run. These IMechE event transactions bring together international authors presenting their latest research and development. With significant developments, such as the impact of CFD on fan design and the increasingly common application of variable speed, International Conference on Fans provides a unique opportunity for both manufacturers and users of fans to share their experience and findings. Topics include: Noise and vibration Small fans and motors Computational fluid dynamics Cooling applications Operation and maintenance Impact of technology, legislation, and testing Fan design International Conference on Fans is vital reading for fan users, installers, consultants, and manufacturers and everyone concerned with power generation, industrial processes, commercial ventilation, air conditioning, tunnel and mine ventilation.
Author: John G. Purnell
Publisher:
ISBN:
Category : Fans (Machinery)
Languages : en
Pages : 86
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Book Description
Two digital computer programs have been formulated for predicting performance characteristics of centrifugal and axial fans which may be used to provide lift air for large surface effect vehicles. Pressure rise and flow characteristics of forwardly curved, radial, and backwardly curved centrifugal fans can be evaluated. Axial fans having either inlet flow prerotators or exit flow straighteners can also be handled in the program. Sample results are presented to illustrate the method of calculation and the nature of the results. (Author).
Author: Seppo A. Korpela
Publisher: John Wiley & Sons
ISBN: 1119518083
Category : Science
Languages : en
Pages : 592
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Book Description
A newly updated and expanded edition that combines theory and applications of turbomachinery while covering several different types of turbomachinery In mechanical engineering, turbomachinery describes machines that transfer energy between a rotor and a fluid, including turbines, compressors, and pumps. Aiming for a unified treatment of the subject matter, with consistent notation and concepts, this new edition of a highly popular book provides all new information on turbomachinery, and includes 50% more exercises than the previous edition. It allows readers to easily move from a study of the most successful textbooks on thermodynamics and fluid dynamics to the subject of turbomachinery. The book also builds concepts systematically as progress is made through each chapter so that the user can progress at their own pace. Principles of Turbomachinery, 2nd Edition provides comprehensive coverage of everything readers need to know, including chapters on: thermodynamics, compressible flow, and principles of turbomachinery analysis. The book also looks at steam turbines, axial turbines, axial compressors, centrifugal compressors and pumps, radial inflow turbines, hydraulic turbines, hydraulic transmission of power, and wind turbines. New chapters on droplet laden flows of steam and oblique shocks help make this an incredibly current and well-rounded resource for students and practicing engineers. Includes 50% more exercises than the previous edition Uses MATLAB or GNU/OCTAVE for all the examples and exercises for which computer calculations are needed, including those for steam Allows for a smooth transition from the study of thermodynamics, fluid dynamics, and heat transfer to the subject of turbomachinery for students and professionals Organizes content so that more difficult material is left to the later sections of each chapter, allowing instructors to customize and tailor their courses for their students Principles of Turbomachinery is an excellent book for students and professionals in mechanical, chemical, and aeronautical engineering.
Author: Racheet Matai
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This work was aimed at improving the efficiency and decrease the noise generated by a cooling fan used by GE transportation to cool a row of resistor networks which dissipate excess energy generated by regenerative power in an inverter application. The first part of study focused on determining the effect of various parameters on the performance of the fan quantitatively by using FLUENT, a general purpose CFD code. The effects of parameters such as hub to tip ratio, chord length/thickness and solidity/number of blades was studied. Once the effect of these parameters was found a new fan was designed which increased the efficiency at the operating point from 73% to 77%. This new fan had a longer blade (increased by 0.75 inches), less number of blades (24 reduced to 18) and a larger chord length (the airfoil scaled by 1.5 time). The hub shape was also modified to reduce separation at the hub. Although a more efficient design, this new fan was found to make more noise with the peak dB levels increasing from 89dB to 110dB due to a higher rate of change of axial force on blades which is proportional to the sound pressure level. Thus a different approach was adopted, an inlet guide vane (IGV) with different lean angles were experimented with. It was seen that a 6 degree lean angle eliminated the peak at the first harmonic of the blade pass frequency (2400Hz) and a 15 degree lean angle eliminated the first and the second harmonic of the blade pass frequency (2400Hz and 3600Hz). The first peak at the blade passing frequency remained approximately the same (~89dB) with the IGV lean.
