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

^*Corresponding author for this work

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

6 Scopus citations

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.

Original language	English (US)
Title of host publication	45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
State	Published - 2009
Externally published	Yes
Event	45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit - Denver, CO, United States Duration: Aug 2 2009 → Aug 5 2009

Publication series

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

Other

Other	45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Country/Territory	United States
City	Denver, CO
Period	08/2/09 → 08/5/09

ASJC Scopus subject areas

Aerospace Engineering
Control and Systems Engineering
Space and Planetary Science
General Energy
Electrical and Electronic Engineering
Mechanical Engineering

Cite this

@inproceedings{0f80e0b6c9644a3d930746fc203d379a,

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.",

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

year = "2009",

language = "English (US)",

isbn = "9781563479762",

series = "45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit",

booktitle = "45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit",

note = "45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit ; Conference date: 02-08-2009 Through 05-08-2009",

}

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.

PY - 2009

Y1 - 2009

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.

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.

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

M3 - Conference contribution

AN - SCOPUS:77957828616

SN - 9781563479762

T3 - 45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

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

T2 - 45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

Y2 - 2 August 2009 through 5 August 2009

ER -

Numerical study of a pulsejet-driven ejector

Abstract

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ASJC Scopus subject areas

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