An Experimental Study of the Flow Field Surrounding a Subsonic Jet in a Cross Flow PDF Download
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Author: Robert Foster Dennis
Publisher:
ISBN:
Category : Jets
Languages : en
Pages : 296
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Author: Robert Foster Dennis
Publisher:
ISBN:
Category : Jets
Languages : en
Pages : 296
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
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Author: Juan Gabriel Santiago
Publisher:
ISBN:
Category :
Languages : en
Pages : 392
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Book Description
The design of a supersonic combustor which uses transverse jet injection into a supersonic flow (TJISF) as a means of fuel injection and mixing requires a fundamental understanding of these flows. Such knowledge may also serve studies of the thrust vector control of rocket nozzles, the cooling of nozzle walls, and jet reaction force prediction. The present investigation is a quantitative, experimental study of a single, sonic, underexpanded, transverse jet injected into a Mach 1.6 crossflow. The motivation for this research program is to improve the fundamental understanding of the fluid dynamic mechanisms and mixing processes in this flow. Schlieren/shadowgraph photography, surface flow visualization, and two-component, frequency pre-shifted laser Doppler velocimetry (LDV) data have been obtained. Four LDV optical arrangements have been used to measure all three mean velocity components, five of the six kinematic Reynolds stresses, and the turbulent kinetic energy. The LDV system is equipped with a computer-controlled traverse system and has been used to provide velocity measurements at over 4,000 locations throughout the TJISF flowfield. The study focuses on the transverse, midline plane and two crossflow planes. The majority of the measurements in these planes has been made in the high gradient regions of the jet plume. Measurements of the mean and turbulent velocity fields helped resolve important issues in the study of the TJISF flowfield. These issues include the size and orientation of the recirculation regions upstream and downstream of the jet (including the horseshoe vortex just upstream of the jet); the structure and strength of the bow shock, barrel shock, and Mach disk; the structure, strength, and development of the kidney-shaped, counter-rotating vortex pair; the growth of the annular shear layer between the jet plume and the crossflow; the growth of the boundary layer beneath the jet plume; the Reynolds stress fields of the flow; the production of turbulent kinetic energy; and the degree of anisotropy of the turbulent stresses in this flow. In addition, the present study provides validation data for analytical and numerical predictions of the TJISF flowfield.
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:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
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Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1000
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1064
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 628
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