Experimental Studies on Compressible Vortex Rings and their Interactions with Stationary and Moving Flat Surfaces
Lead Research Organisation:
University of Manchester
Department Name: Mechanical Aerospace and Civil Eng
Abstract
Vortex rings embody various essential characteristics of vortical motion. Their compact nature also makes them ideal as simpler building blocks in the modelling of complex flows. Unfortunately, despite their apparent simplicity, there are still many unanswered questions related to most aspects of the vortex rings themselves, including their formation, propagation and decay, with more challenging complexities in both their dynamics and energetics introduced by effects of compressibility. Additionally, the flows and interactions associated with compressible vortex rings have received very little attention as compared to those associated with incompressible vortex rings. The present proposal is for a systematic experimental study of compressible vortex rings and their interactions with stationary and moving flat surfaces. The proposed work is novel because their detailed study is limited and there are many questions unanswered associated with these flow fields. The proposed work is also timely because compressible vortex rings and their interactions are highly relevant to current non-lethal-weapon technology development, transport, mixing and turbulence research, wind tunnel experiments, high-speed aerodynamic flows around projectiles, missiles and other slender bodies, turbomachinery, aero-acoustics, suppressors and muzzle brakes design, atmospheric research, pulse detonation engines, automobile exhaust flow fields etc. The investigation will be conducted in the University of Manchester shock tube facility using a range of advanced experimental techniques. The work is divided into three tasks. Task 1 will study the fundamental flow physics of the isolated compressible vortex ring. Task 2 will investigate the compressible vortex ring interaction with stationary and moving flat surfaces. Task 3 will examine the compressible vortex ring interaction with reflected shock waves.
People |
ORCID iD |
Konstantinos Kontis (Principal Investigator) |
Publications
Erdem E
(2014)
Penetration Characteristics of Air, Carbon Dioxide and Helium Transverse Sonic Jets in Mach 5 Cross Flow.
in Sensors (Basel, Switzerland)
Kontis K
(2008)
Head-on collision of shock wave induced vortices with a cylinder and a sphere
in International Journal of Heat and Fluid Flow
Kontis K
(2008)
Head-on collision of shock wave induced vortices with solid and perforated walls
in Physics of Fluids
Mariani R
(2013)
Head on collisions of compressible vortex rings on a smooth solid surface Effects of surface distance variation
in Shock Waves
Mariani R
(2013)
Shock-free compressible vortex rings impinging on a stationary surface: Effects of surface angle variation
in Experimental Thermal and Fluid Science
Mariani R
(2012)
A note on the generation of a compressible vortex rings using helium as driver gas
in Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Mariani R
(2010)
Experimental studies on coaxial vortex loops
in Physics of Fluids
Zare-Behtash H
(2010)
Study of Detonation Interactions Inside a Two-Dimensional Ejector Using Detonation Transmission Tubing
in Journal of Propulsion and Power
Zare-Behtash H
(2009)
Compressible Flow Structures Interaction with a Two-Dimensional Ejector: A Cold-Flow Study
in Journal of Propulsion and Power
Zare-Behtash H
(2010)
Shock wave-induced vortex loops emanating from nozzles with singular corners
in Experiments in Fluids
Zare-Behtash H
(2009)
Compressible vortex loops: Effect of nozzle geometry
in International Journal of Heat and Fluid Flow
Description | Novel understanding of Vortex Ring physical mechanisms creating stable long-distance propagating vortices |
Exploitation Route | Develop vortex-guns for protection applications |
Sectors | Aerospace Defence and Marine Energy |
Description | AIRBUS OPERATIONS LIMITED |
Organisation | Airbus Group |
Country | France |
Sector | Academic/University |
Start Year | 2004 |
Description | DSTL collaboration |
Organisation | Defence Science & Technology Laboratory (DSTL) |
Country | United Kingdom |
Sector | Public |
PI Contribution | In-kind contribution |
Collaborator Contribution | In-kind contribution |
Impact | Journal articles Follow-on research activity |