An Experiment on the Near Flow Field of the GE/Arl Mixer Ejector Nozzle

Author:   Nasa Technical Reports Server (Ntrs)
Publisher:   Bibliogov
ISBN:  

9781287263456


Pages:   62
Publication Date:   31 July 2013
Format:   Paperback
Availability:   In stock   Availability explained
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An Experiment on the Near Flow Field of the GE/Arl Mixer Ejector Nozzle


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Overview

This report is a documentation of the results on flowfield surveys for the GE/ARL mixer-ejector nozzle carried out in an open jet facility at NASA Glenn Research Center. The results reported are for cold (unheated) flow without any surrounding co-flowing stream. Distributions of streamwise vorticity as well as turbulent stresses, obtained by hot-wire anemometry, are presented for a low subsonic condition. Pitot probe survey results are presented for nozzle pressure ratios up to 3.5. Flowfields both inside and outside of the ejector are considered. Inside the ejector, the mean velocity distribution exhibits a cellular pattern on the cross sectional plane, originating from the flow through the primary and secondary chutes. With increasing downstream distance an interchange of low velocity regions with adjacent high velocity regions takes place due to the action of the streamwise vortices. At the ejector exit, the velocity distribution is nonuniform at low and high pressure ratios but reasonably uniform at intermediate pressure ratios. The effects of two chevron configurations and a tab configuration on the evolution of the downstream jet are also studied. Compared to the baseline case, minor but noticeable effects are observed on the flowfield.

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Author:   Nasa Technical Reports Server (Ntrs)
Publisher:   Bibliogov
Imprint:   Bibliogov
Dimensions:   Width: 18.90cm , Height: 0.30cm , Length: 24.60cm
Weight:   0.127kg
ISBN:  

9781287263456


ISBN 10:   1287263453
Pages:   62
Publication Date:   31 July 2013
Audience:   General/trade ,  General
Format:   Paperback
Publisher's Status:   Active
Availability:   In stock   Availability explained
We have confirmation that this item is in stock with the supplier. It will be ordered in for you and dispatched immediately.

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