Two-dimensional Compressible Flow in Centrifugal Compressors with Logarithmic-spiral Blades PDF Download
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Author: Gaylord O. Ellis
Publisher:
ISBN:
Category : Air flow
Languages : en
Pages : 54
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Book Description
Two numerical examples are presented for two-dimensional, compressible, nonviscous flow in centrifugal compressors with backward-curved, logarithmic-spiral blades. The two examples are for different blade angles and are compared with a third example for straight, radial blades. The numerical results are presented in tables of the stream-function distribution and in plots of the streamlines, constant Mach number lines, and constant-pressure-ratio lines. In addition, a simplified analysis for logarithmic-spiral blades is presented that can be used to determine flow conditions within the impeller except near the imperller tip and impeller inlet.
Author: Gaylord O. Ellis
Publisher:
ISBN:
Category : Air flow
Languages : en
Pages : 54
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Book Description
Two numerical examples are presented for two-dimensional, compressible, nonviscous flow in centrifugal compressors with backward-curved, logarithmic-spiral blades. The two examples are for different blade angles and are compared with a third example for straight, radial blades. The numerical results are presented in tables of the stream-function distribution and in plots of the streamlines, constant Mach number lines, and constant-pressure-ratio lines. In addition, a simplified analysis for logarithmic-spiral blades is presented that can be used to determine flow conditions within the impeller except near the imperller tip and impeller inlet.
Author: John D. Stanitz
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 712
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Book Description
Six numerical examples are presented for steady, two-dimensional, compressible, nonviscous flow in centrifugal compressors with straight blades. A seventh example is presented for incompressible flow. The solutions also applye to radial-flow turbines with rotation and flow direction reversed. The effects of variations in following parameters were investigated: (1) flow rate, (2) impeller-tip speed, (3) variation of passage height with radius, and (4) number of blades. The numerical results are presented in plots of the streamlines, constant Mach number lines, and constant pressure-ratio lines. Correlation equations are developed whereby the flow conditions in any impeller with straight blades can be determined for all operating conditions.
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 886
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Book Description
Author: Louis P. Tosti
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 692
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Book Description
An investigation of the take-off, landing, and hovering-flight characteristics of a four-engine-transport, vertical take-off airplane has been conducted with a remotely controlled free-flight model. The model had four propellers distributed along the wing with thrust axes parallel to the fuselage axis. In order to produce direct lift for hovering flight, the propeller slipstream was deflected downward about 70 degrees by a full-span 65-percent-chord flap deflected 90 degrees and eight extensible vanes arranged above the wing in a cascade relation.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 550
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 500
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Book Description
Author: Alois T. Sutor
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 706
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Book Description
Analytical expressions are derived to show the geometric, thermodynamic, and aerodynamic relations among compressor, turbine, and exhaust nozzle for a gas-turbine engine. For a known compressor performance map, a matching method is described to show some of the design compromises that must be made when the components are to be combined into a turbine-propeller engine. A method of predicting engine performance for a range of operating conditions from known component maps is presented. An illustrative example of the matching method and the performance analysis is presented, showing some of the practical limitations of engine operation.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1044
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Book Description
Author: Business and Defense Services Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 920
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Book Description
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1026
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Book Description
Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.
