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Diffuser Efficiency and Flow Process of Supersonic Wind Tunnels with Free Jet Test Section

Rudolf Hermann
4.9/5 (26342 ratings)
Read Now Download Now ⏭ listen AudioBook
Description:In the wind tunnel arrangement under consideration, the air leaves the Laval nozzle as a free jet and is recaptured by the diffuser, which is of the convergent-divergent design. A theoretical analysis of the flow process through this type of supersonic wind tunnel is presented and the diffuser efficiency is calculated for the case of equilibrium between test chamber pressure and pressure in the nozzle exit, assuming one-dimensional, in viscous, steady flow. Using the basic equations of continuity, energy and momentum flux through a bounding surface, an exact solution of the problem is obtained, which is applicable up to Mach number infinite. One of the basic results is, that in the recapturing zone of the diffuser a transition occurs from supersonic to subsonic flow, which is followed by an acceleration in the convergent portion up to sonic velocity at the second throat. The transition is not a normal shock and involves a total pressure loss greater than that of a normal shock at the test section Mach number. A mathematical solution with supersonic velocity after the transition process has no physical existence. A comprehensive comparison of the analytical results with available experiments in supersonic wind tunnels up to Mach number 4.4 regarding diffuser efficiency and second throat area shows good agreement.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Diffuser Efficiency and Flow Process of Supersonic Wind Tunnels with Free Jet Test Section. To get started finding Diffuser Efficiency and Flow Process of Supersonic Wind Tunnels with Free Jet Test Section, you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.
Pages
88
Format
PDF, EPUB & Kindle Edition
Publisher
—
Release
1950
ISBN
uWjpMrJV9g4C

Diffuser Efficiency and Flow Process of Supersonic Wind Tunnels with Free Jet Test Section

Rudolf Hermann
4.4/5 (1290744 ratings)
Read Now Download now ⏭ listen AudioBook
Description: In the wind tunnel arrangement under consideration, the air leaves the Laval nozzle as a free jet and is recaptured by the diffuser, which is of the convergent-divergent design. A theoretical analysis of the flow process through this type of supersonic wind tunnel is presented and the diffuser efficiency is calculated for the case of equilibrium between test chamber pressure and pressure in the nozzle exit, assuming one-dimensional, in viscous, steady flow. Using the basic equations of continuity, energy and momentum flux through a bounding surface, an exact solution of the problem is obtained, which is applicable up to Mach number infinite. One of the basic results is, that in the recapturing zone of the diffuser a transition occurs from supersonic to subsonic flow, which is followed by an acceleration in the convergent portion up to sonic velocity at the second throat. The transition is not a normal shock and involves a total pressure loss greater than that of a normal shock at the test section Mach number. A mathematical solution with supersonic velocity after the transition process has no physical existence. A comprehensive comparison of the analytical results with available experiments in supersonic wind tunnels up to Mach number 4.4 regarding diffuser efficiency and second throat area shows good agreement.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Diffuser Efficiency and Flow Process of Supersonic Wind Tunnels with Free Jet Test Section. To get started finding Diffuser Efficiency and Flow Process of Supersonic Wind Tunnels with Free Jet Test Section, you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.
Pages
88
Format
PDF, EPUB & Kindle Edition
Publisher
—
Release
1950
ISBN
uWjpMrJV9g4C

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