An experimental investigation of the effects of base bleed in axisymmetric supersonic flow

Base bleed is a technique wherein a small quantity of fluid is injected into the base region of a projectile to reduce the base drag. The effects of base bleed on the near-wake flowfield of a cylindrical afterbody in a Mach 2.5 flow have been investigated in the present study. This experimental study is aimed at better understanding the complex fluid dynamic interactions occurring in the near-wake due to base bleed and is motivated by the lack of detailed velocity and turbulence data in this flowfield. The experimental techniques used include static pressure measurements, schlieren and shadowgraph photography, and two-component laser Doppler velocimetry (LDV). The comprehensive LDV mean velocity and turbulence measurements obtained during this study provide valuable insight into the physics of the base bleed mechanism and constitute a benchmark data set to aid analytical and computational efforts in modeling and predicting supersonic base flows.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Mathur, Tarun

Contributors dc:contributor

• Dutton, J. Craig

• Engineering, Aerospace
• Engineering, Mechanical

Statement dc:rights

• Copyright 1996 Mathur, Tarun

Language dc:language

eng

Identifier

9780591199369
AAI9712371
(UMI)AAI9712371

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20022