A Study of Penetration of a Liquid Injectant Into a Supersonic Flow PDF Download
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Author: Kenneth P. Horn
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 26
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Book Description
The paper reports a study of normal and lateral spray penetration for small diameter, high pressure, liquid jets issuing at an angle to a uniform supersonic stream. The experimental program described was carried out in a 4-in. by 4-in. blow down supersonic wind tunnel. The flow field is observed by means of a schlieren system, and the spray distribution is indicated by the light scattered by the liquid droplets. The data on normal penetration, in good agreement with data inferred from other investigations, indicate that a single-parameter correlation exists between the properly nondimensionalized penetration height and the injection pressure ratio. Injecting the coolant at a forward angle to the flow produces no substantial change in the penetration height. The data on lateral penetration show the spray width behind the jet to be proportional to the jet diameter with only a weak dependence on the injection pressure ratio. Analytical models proposed by previous investigators are critically examined in light of the results. No single model leads to a proper scaling law for both normal and lateral penetration. (Author).
Author: Kenneth P. Horn
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 26
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Book Description
The paper reports a study of normal and lateral spray penetration for small diameter, high pressure, liquid jets issuing at an angle to a uniform supersonic stream. The experimental program described was carried out in a 4-in. by 4-in. blow down supersonic wind tunnel. The flow field is observed by means of a schlieren system, and the spray distribution is indicated by the light scattered by the liquid droplets. The data on normal penetration, in good agreement with data inferred from other investigations, indicate that a single-parameter correlation exists between the properly nondimensionalized penetration height and the injection pressure ratio. Injecting the coolant at a forward angle to the flow produces no substantial change in the penetration height. The data on lateral penetration show the spray width behind the jet to be proportional to the jet diameter with only a weak dependence on the injection pressure ratio. Analytical models proposed by previous investigators are critically examined in light of the results. No single model leads to a proper scaling law for both normal and lateral penetration. (Author).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
The paper reports a study of normal and lateral spray penetration for small diameter, high pressure, liquid jets issuing at an angle to a uniform supersonic stream. The experimental program described was carried out in a 4-in. by 4-in. blow down supersonic wind tunnel. The flow field is observed by means of a schlieren system, and the spray distribution is indicated by the light scattered by the liquid droplets. The data on normal penetration, in good agreement with data inferred from other investigations, indicate that a single-parameter correlation exists between the properly nondimensionalized penetration height and the injection pressure ratio. Injecting the coolant at a forward angle to the flow produces no substantial change in the penetration height. The data on lateral penetration show the spray width behind the jet to be proportional to the jet diameter with only a weak dependence on the injection pressure ratio. Analytical models proposed by previous investigators are critically examined in light of the results. No single model leads to a proper scaling law for both normal and lateral penetration. (Author).
Author: S. I. Baranovsky
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
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Book Description
The main aim of this experimental work was a detailed study of the influence of injection angle on the penetration and break-up of liquid fuel jets in a supersonic air stream. A particular goal was to incorporate that variable into the penetration correlations previously developed at VPI. This was accomplished. A secondary aim of the work was to assess the performance of liquid fuel jet injection from the top of a slender strut that protrudes out into the flow. This is one method that has been suggested for the 'mechanical' enhancement of penetration. The penetration behavior was found to be similar to that associated with injection from a flat plate. A result of particular interest was the discovery of waves with amazingly sharp crests on the windward side of the jets for downstream angled injection.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 448
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Book Description
Author: William F. Hinson
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 50
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 400
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Book Description
Author: Mingbo Sun
Publisher: Springer
ISBN: 9811360251
Category : Technology & Engineering
Languages : en
Pages : 284
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Book Description
Based on research into jets in supersonic crossflow carried out by the authors’ team over the past 15 years, this book summarizes and presents many cutting-edge findings and analyses on this subject. It tackles the complicated mixing process of gas jets and atomization process of liquid jets in supersonic crossflow, and studies their physical mechanisms. Advanced experimental and numerical techniques are applied to further readers’ understanding of atomization, mixing, and combustion of fuel jets in supersonic crossflow, which can promote superior fuel injection design in scramjet engines. The book offers a valuable reference guide for all researchers and engineers working on the design of scramjet engines, and will also benefit graduate students majoring in aeronautical and aerospace engineering.
Author: P. Contensou
Publisher: Elsevier
ISBN: 1483146014
Category : Technology & Engineering
Languages : en
Pages : 1066
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Book Description
Proceedings of the XXth International Astronautical Congress compiles selected papers presented at the 20th International Astronautical Congress held in Mar del Plata, Argentina in 1969. This book is divided into five main topics—spacecraft engineering, astrodynamics, astrionics, bioastronautics, and problems of education. In these topics, this compilation specifically discusses the equatorial vibrations of a long flexible boom on a spin-stabilized satellite of non-zero radius; heat transfer to linear bodies in two-dimensional hypersonic low density; and limits of accuracy of general perturbations for satellites moving under constant forces. The rapid optimization of multiple-burn rocket flights; data transmission for planetary studies; and comparison of theoretical and experimental attitude data for the DODGE spacecraft are also elaborated. This text also covers the Apollo life-support and protective systems; bioastronautical aspects of Apollo biomedical operations; and development and applications of hot water rockets. This publication is recommended for astrophysicists and scientists of other disciplines related to astronomy.
Author: Kinya Aoyama
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Book Description
Author: Robert Wellington Castle
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Book Description
A study was conducted to determine the effects of varying the fluid properties of viscosity, surface tension, and density on liquid jet breakup, penetration, and spreading. Water, heptane, and a 58 per cent glycerin-42 per cent water mixture (by mass) were injected transversely into Mach 2.8 and 4.0 airstreams through various circular orifices located in the surface of a flat plate model. Experiments were performed with injector orifices varying in diameter from 0.0145 inches to 0.080 inches, using injectant total pressures ranging from 30 psia. to 3000 psia. Steady-state penetration and lateral spreading distances were measured from scattered light photographs, and qualitative analyses of shock waves induced by the liquid jet were made using schlieren photographs. (Author).
