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Manipulation of Reynolds Stress for Separation Control and Drag Reduction

Manipulation of Reynolds Stress for Separation Control and Drag Reduction

Objective

Reynolds stress is the most important quantity affecting the mean flow as it is responsible for a major part of the momentum transfer in the wall bounded turbulent flow. It has a direct relevance to both skin friction and flow separation. Manipulation of the Reynolds stress can directly lead to changes in the viscous stress at the wall so as to effectively control the flow for effective flow control.
However, there is a lack of current understanding of the inter-relationship between the various flow control devices and the Reynolds stresses in the flow field they produced. An improved understanding can potentially significantly improve the effectiveness of flow control as the Reynolds stresses are closely related to the flow behaviour at the surface for effective separation control or drag reduction. A variety of control devices are available and new ones are invented but which one for what purpose is an open question yet to be fully answered.
MARS proposal proposes to reverse that process and consider the long term goal of controlling dynamic structures that influence the Reynolds stress that changes the mean flow. This radical approach recognises we are still some way away from hardware to implement it at flight scales but if successful, would establish a first important step towards our ultimate ambition.
The focus of MARS will be on the effects of a number of active flow control devices on the discrete dynamic components of the turbulent shear layers and the Reynolds stress. From the application point of view, MARS provides a positive and necessary step in the right direction wherein it will demonstrate the capability to control individual structures that are larger in scale and lower in frequency compared to the richness of the time and spatial scales in a turbulent boundary layer. MARS will investigate active flow control means rather than passive controls.
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Coordinator

CENTRE INTERNACIONAL DE METODES NUMERICS EN ENGINYERIA

Address

C Gran Capitan, Edifici C1, Campus Nord Upc Sn
08034 Barcelona

Spain

Activity type

Research Organisations

EU Contribution

€ 219 383,29

Administrative Contact

Anna Font Jornet (Ms.)

Participants (18)

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THE UNIVERSITY OF SHEFFIELD

United Kingdom

EU Contribution

€ 239 231,20

AIRBUS OPERATIONS SL

Spain

EU Contribution

€ 47 695

TOTALFORSVARETS FORSKNINGSINSTITUT

Sweden

EU Contribution

€ 159 160,84

ALENIA AERMACCHI SPA

Italy

EU Contribution

€ 49 287,22

DLR

Germany

EU Contribution

€ 113 682

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

France

EU Contribution

€ 180 552

DASSAULT AVIATION

France

EU Contribution

€ 23 850,10

NUMERICAL MECHANICS APPLICATIONS INTERNATIONAL SA

Belgium

EU Contribution

€ 95 152,95

THE UNIVERSITY OF MANCHESTER

United Kingdom

EU Contribution

€ 177 300

INSTITUT NATIONAL DE RECHERCHE ENINFORMATIQUE ET AUTOMATIQUE

France

EU Contribution

€ 110 270,75

AIRBUS GROUP LIMITED

United Kingdom

EU Contribution

€ 14 166,90

NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

China

EU Contribution

€ 13 911,36

TSINGHUA UNIVERSITY

China

EU Contribution

€ 6 240

NORTHWESTERN POLYTECHNICAL UNIVERSITY

China

EU Contribution

€ 6 600

PEKING UNIVERSITY

China

EU Contribution

€ 2 474,51

BEIHANG UNIVERSITY

China

EU Contribution

€ 4 477,68

Zhejiang University

China

EU Contribution

€ 5 772

CHINESE AERONAUTICAL ESTABLISHMENT

China

EU Contribution

€ 29 465,20

Project information

Grant agreement ID: 266326

Status

Closed project

  • Start date

    1 October 2010

  • End date

    31 March 2014

Funded under:

FP7-TRANSPORT

  • Overall budget:

    € 3 490 633,20

  • EU contribution

    € 1 498 673

Coordinated by:

CENTRE INTERNACIONAL DE METODES NUMERICS EN ENGINYERIA

Spain