Combined experimental and computational study of synthetic jets injected into separated turbulent boundary layers pertinent to high-lift aerod
Lead Research Organisation:
University of Manchester
Department Name: Mechanical Aerospace and Civil Eng
Abstract
The potential for exploiting synthetic jet actuators to delay and control boundary-layer separation in conditions akin to those on aircraft components operating in high-load conditions has attracted much interest in recent years. However, the fundamental mechanism by which synthetic jets interact with incipiently separated turbulent boundary layers subjected to strongly adverse pressure gradient is yet to be fully understood before cost-effective operational flow-control solutions can be sought. This proposal seeks funding for a joint programme of work between groups at Manchester University and Imperial College London, which would exploit complementary strengths and facilities at the two universities. The programme aims to employ a combined experimental (Stereo PIV and other conventional measurement techniques) and computational approach (LES and LES/RANS hybrid modelling) to study the detailed interaction mechanisms, so as to derive generically valid guidelines on optimal separation control in a practical setting. The outcome of the research would be of value to both the academic community and aerospace industry, the latter striving to evolve engineering solutions to flow management with a minimum of moving parts and energy input.
People |
ORCID iD |
Shan Zhong (Principal Investigator) |
Publications
Zhong S
(2013)
Further Examination of the Mechanism of Round Synthetic Jets in Delaying Turbulent Flow Separation
in Flow, Turbulence and Combustion
Description | 1. Identification of the optimal operating conditions of synthetic jets at which a minimum of energy expenditure is required to achieved a maximum amount of flow separation delay for a given external flow condition; 2. Identification of the typical vortical structures of synthetic jets which yield such a desired flow control effect; 3. Establishment of the physical mechanism of round synthetic jets in delaying flow separation |
Exploitation Route | 1. Improved understanding of fluid mechanics of synthetic jets which forms the foundation for practical applications of synthetic jets for flow separation control; 2. A database of experimental data for validating CFD codes |
Sectors | Aerospace, Defence and Marine |
Description | The findings from this project have been published in academic journals and reported in international conferences. They have also been disseminated to Airbus UK and had influenced their subsequent policies in continuing their support to flow control research & design. |
First Year Of Impact | 2009 |
Sector | Aerospace, Defence and Marine |
Description | EADS innovation Works |
Amount | £18,000 (GBP) |
Organisation | Airbus Group |
Department | EADS Innovation Works |
Sector | Private |
Country | United Kingdom |
Start | 09/2011 |
End | 09/2014 |
Description | Royal Society International Exchange |
Amount | £12,000 (GBP) |
Organisation | The Royal Society |
Sector | Charity/Non Profit |
Country | United Kingdom |
Start | 04/2014 |
End | 03/2016 |
Title | Control of turbulent flow separation over a 2D ramp using synthetic jets |
Description | This database contains the experiemental data acquired during an EPSRC funded project (EP/E047041/1). This contains the velocity profiles across a separating turbulent boundary layer with and without actuation of synthetic jets. |
Type Of Material | Database/Collection of data |
Year Produced | 2013 |
Provided To Others? | Yes |
Impact | This database has been uploaded to a website managed by NASA Langley Research Centre which has a collection of numerical and experimental databases with free access by the fluid dynamics community around the globe. These databases can be used for validating turbulence models and computational codes for different flow scenarios. Our experimental data also have been made available to our research collaborator at Imperial College (Prof Michael Leschziner) for validating his large-eddy simulations. |
URL | http://turbmodels.larc.nasa.gov/Other_exp_Data/roundjet_sepcontrol_exp.html |
Description | Airbus UK |
Organisation | Airbus Group |
Country | France |
Sector | Academic/University |
PI Contribution | Execution of research work and dissemination of research finding to the industrial partner via progress review meetings and several project reports |
Collaborator Contribution | Direct cash contribution and constructive discussions on research work during periodic review meetings. |
Impact | Installation of the boundary layer tunnel (denoted by QinetiQ) at Manchester University with the cash contribution from Airbus. This tunnel was used for carrying out this EPSRC funded research project and it also becomes a valuable research facility for future research at Manchester. The research finding also excerted impact on the policies at Airbus on future flow control research |