The Performance of an Axial-flow Fan Designed by Computer PDF Download
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Author: J. E. Hesselgreaves
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Book Description
Author: J. E. Hesselgreaves
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722676032
Category :
Languages : en
Pages : 96
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Book Description
An off-design axial-flow compressor code is presented and is available from COSMIC for predicting the aerodynamic performance maps of fans and compressors. Steady axisymmetric flow is assumed and the aerodynamic solution reduces to solving the two-dimensional flow field in the meridional plane. A streamline curvature method is used for calculating this flow-field outside the blade rows. This code allows for bleed flows and the first five stators can be reset for each rotational speed, capabilities which are necessary for large multistage compressors. The accuracy of the off-design performance predictions depend upon the validity of the flow loss and deviation correlation models. These empirical correlations for the flow loss and deviation are used to model the real flow effects and the off-design code will compute through small reverse flow regions. The input to this off-design code is fully described and a user's example case for a two-stage fan is included with complete input and output data sets. Also, a comparison of the off-design code predictions with experimental data is included which generally shows good agreement. Schmidt, James F. Unspecified Center...
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: D.J. Myles
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
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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: Curt Keller
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 170
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Book Description
Author: David James Myles
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Author: Marc de Piolenc
Publisher: Lulu.com
ISBN: 0359104908
Category :
Languages : en
Pages : 182
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Book Description
Author: Laura M. Powers
Publisher:
ISBN:
Category : Turbomachines
Languages : en
Pages : 370
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Book Description
Author: James F. Schmidt
Publisher:
ISBN:
Category :
Languages : en
Pages : 98
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Book Description
