Numerical study of a pulsejet-driven ejector

Fei Zheng; Andrey V. Kuznetsov; William L. Roberts; Daniel E. Paxson

Numerical study of a pulsejet-driven ejector

Fei Zheng, Andrey V. Kuznetsov, William L. Roberts, Daniel E. Paxson

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A commercially available computational fluid dynamics code was used to study the unsteady thrust augmentation of a complete pulsejet/ejector system. A 50 cm long pulsejet was used as a driving source. Combined systems, consisting of the pulsejet and ejectors with different geometries, were simulated. Computed, limit-cycle thrust augmentation values compared favorably to experimentally obtained values for the same setups. The starting vortex generated by the pulsejet and its interaction with the ejector was investigated in detail. Results suggest that the optimal diameter of the ejector is related to its position, decided by the path of the vortex ring. The effect of the length of the ejector was also investigated and showed to have a minor effect and related to the acoustic process. © 2009 by the American Institute of Aeronautics and Astronautics, Inc.

Original language	English (US)
Title of host publication	45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
State	Published - Dec 1 2009
Externally published	Yes

Cite this

@inproceedings{43685e2d5b16428da6caf8294d8c3d6a,

title = "Numerical study of a pulsejet-driven ejector",

abstract = "A commercially available computational fluid dynamics code was used to study the unsteady thrust augmentation of a complete pulsejet/ejector system. A 50 cm long pulsejet was used as a driving source. Combined systems, consisting of the pulsejet and ejectors with different geometries, were simulated. Computed, limit-cycle thrust augmentation values compared favorably to experimentally obtained values for the same setups. The starting vortex generated by the pulsejet and its interaction with the ejector was investigated in detail. Results suggest that the optimal diameter of the ejector is related to its position, decided by the path of the vortex ring. The effect of the length of the ejector was also investigated and showed to have a minor effect and related to the acoustic process. {\textcopyright} 2009 by the American Institute of Aeronautics and Astronautics, Inc.",

author = "Fei Zheng and Kuznetsov, {Andrey V.} and Roberts, {William L.} and Paxson, {Daniel E.}",

note = "Generated from Scopus record by KAUST IRTS on 2023-09-20",

year = "2009",

month = dec,

day = "1",

language = "English (US)",

isbn = "9781563479762",

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TY - GEN

T1 - Numerical study of a pulsejet-driven ejector

AU - Zheng, Fei

AU - Kuznetsov, Andrey V.

AU - Roberts, William L.

AU - Paxson, Daniel E.

N1 - Generated from Scopus record by KAUST IRTS on 2023-09-20

PY - 2009/12/1

Y1 - 2009/12/1

N2 - A commercially available computational fluid dynamics code was used to study the unsteady thrust augmentation of a complete pulsejet/ejector system. A 50 cm long pulsejet was used as a driving source. Combined systems, consisting of the pulsejet and ejectors with different geometries, were simulated. Computed, limit-cycle thrust augmentation values compared favorably to experimentally obtained values for the same setups. The starting vortex generated by the pulsejet and its interaction with the ejector was investigated in detail. Results suggest that the optimal diameter of the ejector is related to its position, decided by the path of the vortex ring. The effect of the length of the ejector was also investigated and showed to have a minor effect and related to the acoustic process. © 2009 by the American Institute of Aeronautics and Astronautics, Inc.

AB - A commercially available computational fluid dynamics code was used to study the unsteady thrust augmentation of a complete pulsejet/ejector system. A 50 cm long pulsejet was used as a driving source. Combined systems, consisting of the pulsejet and ejectors with different geometries, were simulated. Computed, limit-cycle thrust augmentation values compared favorably to experimentally obtained values for the same setups. The starting vortex generated by the pulsejet and its interaction with the ejector was investigated in detail. Results suggest that the optimal diameter of the ejector is related to its position, decided by the path of the vortex ring. The effect of the length of the ejector was also investigated and showed to have a minor effect and related to the acoustic process. © 2009 by the American Institute of Aeronautics and Astronautics, Inc.

UR - http://www.scopus.com/inward/record.url?scp=77957828616&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9781563479762

BT - 45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

ER -

Numerical study of a pulsejet-driven ejector

Abstract

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