Author: Klaus Oswatitsch
Publisher:
ISBN:
Category : Nozzles
Languages : en
Pages : 42
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Book Description
The present report describes a new method for the prediction of the flow pattern of a gas in the two-dimensional and axially symmetrical case. It is assumed that the expansion of the gas is adiabatic and the flow stationary. The several assumptions necessary of the nozzle shape effect, in general, no essential limitation on the conventional nozzles. The method is applicable throughout the entire speed range; the velocity of sound itself plays no singular part. The principal weight is placed on the treatment of the flow near the throat of a converging-diverging nozzle. For slender nozzles formulas are derived for the calculation of the velocity components as function of the location.
Author: K. Oswatitsch
Publisher: BiblioGov
ISBN: 9781289104917
Category :
Languages : en
Pages : 46
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Book Description
The present report describes a new method for the prediction of the flow pattern of a gas in the two-dimensional and axially symmetrical case. It is assumed that the expansion of the gas is adiabatic and the flow stationary. The several assumptions necessary of the nozzle shape effect, in general, no essential limitation on the conventional nozzles. The method is applicable throughout the entire speed range; the velocity of sound itself plays no singular part. The principal weight is placed on the treatment of the flow near the throat of a converging-diverging nozzle. For slender nozzles formulas are derived for the calculation of the velocity components as function of the location.
Author: Hai-Tien Loh
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 254
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Book Description
Author: Joseph A. Vogrin
Publisher:
ISBN:
Category : Flow meters
Languages : en
Pages : 270
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Book Description
A discussion is presented of an investigation of the flow characteristics in a horizontal, converging-diverging nozzle for a two-phase, air- water system. The primary consideration, to determine the effects of accelerating the liquid phase by the gaseous phase, was measured in terms of nozzle exit water velocity, exit slip ratio, and exit acceleration factor. A gamma-ray-attenuation technique was used to determine these values by determining the average cross-sectional void fraction, the ratio of gas volume to total volume, for the air-water mixture.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 55
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Book Description
Author: Arthur Kantrowitz
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Book Description
Author: David W. Netzer
Publisher:
ISBN:
Category :
Languages : en
Pages : 74
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Book Description
An analytical method is presented for determining the flow characteristics of a two-phase flow of liquid drops in a gas stream as the mixture expands through an annular converging-diverging nozzle. The subject analysis can be utilized to predict the liquid velocity, gas velocity, static pressure, and droplet diameter as a function of AXIAL DISTANCE ALONG THE NOZZLE FOR A TWO-PHASE FLOW THAT CONTAINS APPROXIMATELY 10 TIMES AS MUCH LIQUID AS GAS BY WEIGHT. Two nozzle configurations were investigated. Both had the same converging angle of 20 degrees, throat radius of 1 in., inlet area of 3.287 sq. in., throat area of 0.267 sq. in. and exit area of 2.450 sq. in. One nozzle had a total diverging angle of 7 degrees and the other had a total diverging angle of 21 degrees. Flow rates of between 8 and 11 lb/sec of water and between 1.0 and 1.3 lb/sec of air were utilized. The liquid and gas were expanded from a low velocity and a pressure of 500 psig to ambient pressure. The theoretical and experimental pressure profiles matched closely for both nozzles investigated. The thrust was predicted to an accuracy of approximately 3% for the short nozzle, but to an accuracy of only approximately 20% for the long nozzle.
Author: Richard Joseph Smutny
Publisher:
ISBN:
Category :
Languages : en
Pages : 74
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Book Description
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 422
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Book Description
Chiefly translations from foreign aeronautical journals.
