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Grant: Collaborative Science, Technology and Innovation Program – Ideation Fund

Carleton University

$31,500.00

A new approach towards stability analysis of laminar-turbulent transition flow

FY 2019-20 · 2020-03-06

Summary
In the current project, a new cost functional for the variational formulation is proposed, wherein all the intrinsic properties of the most complete version of the Navier-Stokes equation including the non-linear terms are incorporated. To achieve this, one needs to simultaneously consider the Navier-Stokes system and its dual by means of non-convex optimization theory. Due to the presence of a convex function and its Fenchel dual, this new and symmetric energy functional is constructed and used as follows: first, a general framework, in which solutions of the Navier-Stokes system – which is not of the Euler-Lagrange type – are identified as the minima of an appropriately devised non-negative self-dual energy functional. As the second step, such self-dual features are used to develop a systematic approach for a variational resolution and stability of the solutions of the developed equations.
Program
Collaborative Science, Technology and Innovation Program – Ideation Fund
Location
Ottawa|Ottawa, Ontario, Canada
Recipient Type
Academia
Business Number
118838937
Type
Grant
Source
Proactive Disclosure - Grants and Contributions

As published

Additional Information
This agreement has been amended 1 time(s). The total amended value is $31500 and the end date of this agreements has been modified by 365 days)
Additional Information (French)
Cet accord a été modifié 1 fois. La valeur totale des modifications est de 31 500 dollars. Cet accord a été modifié 1 fois La date de fin du présent accord a été changé de 365 jours.
Agreement End Date
2022-03-31
Agreement Number
944746
Agreement Start Date
2020-03-06
Agreement Title
A new approach towards stability analysis of laminar-turbulent transition flow
Agreement Title (French)
Nouvelle approche à l’analyse de stabilité de la transition entre flux laminaires et turbulences
Agreement Type
Grant
Agreement Value
$31,500.00
Amendment Date
2021-01-29
Amendment Number
1
Description
In the current project, a new cost functional for the variational formulation is proposed, wherein all the intrinsic properties of the most complete version of the Navier-Stokes equation including the non-linear terms are incorporated. To achieve this, one needs to simultaneously consider the Navier-Stokes system and its dual by means of non-convex optimization theory. Due to the presence of a convex function and its Fenchel dual, this new and symmetric energy functional is constructed and used as follows: first, a general framework, in which solutions of the Navier-Stokes system – which is not of the Euler-Lagrange type – are identified as the minima of an appropriately devised non-negative self-dual energy functional. As the second step, such self-dual features are used to develop a systematic approach for a variational resolution and stability of the solutions of the developed equations.
Description (French)
Le projet actuel propose une nouvelle fonction coût pour la formulation variationnelle. Cette fonction intègre toutes les propriétés intrinsèques de la forme la plus complète du système d’équations Navier-Stokes, y compris les termes non linéaires. Pour cela, on doit simultanément prendre en compte le système Navier-Stokes et son double en recourant à la théorie de l’optimisation non convexe. L’existence d’une fonction convexe et de son double Fenchel fait en sorte qu’on bâtit et applique la nouvelle fonction symétrique de l’énergie comme suit. Tout d’abord, on utilise un cadre général dans lequel les solutions au système Navier-Stokes — sauf celles du type Euler-Lagrange — servent de valeur minimale à une fonction de l’énergie non négative à doublage automatique, construite de la manière appropriée. Ensuite, les fonctionnalités d’autodoublage servent à développer une approche méthodique à la résolution des écarts et à la stabilisation des solutions pour les équations obtenues.
Expected Results
In the short term, anticipated outcomes will be strengthened collaborations across industry, academia, and government to support research excellence. In the medium term, anticipated outcomes will be the development of new and potentially disruptive technologies with collaborators.
Expected Results (French)
À court terme, les résultats prévus sont des collaborations renforcées dans l’ensemble de l’industrie, du milieu universitaire et du gouvernement afin d’appuyer l’excellence en recherche. À moyen terme, les résultats prévus sont le développement de technologies potentiellement perturbatrices avec des collaborateurs.
Federal Riding
Ottawa Centre
Federal Riding (French)
Ottawa-Centre
Federal Riding Number
35075
NAICS Code
541710 - R&D in the physical, engineering and life sciences
Organization Code
nrc-cnrc
Organization
National Research Council Canada | Conseil national de recherches Canada
Program Name
Collaborative Science, Technology and Innovation Program – Ideation Fund
Program Name (French)
Programme de collaboration en science, en technologie et en innovation – Fonds d’idéation
Program Purpose
The Ideation Fund is intended to encourage, test and validate transformative research ideas generated by teams of NRC scientific personnel and external collaborators with complementary capabilities, acting as a demonstration phase for a continually-evolving suite of research and development (R&D) deliverables at the NRC. The fund supports exploratory research through two mechanisms: the New Beginnings Initiative and the Small Teams Initiative.
Program Purpose (French)
Le Fonds d’idéation vise à encourager, à mettre à l’essai et à valider les idées de recherche transformatrice des équipes scientifiques du CNRC et des collaborateurs externes dotés de capacités complémentaires. Il servira ainsi de plateforme de démonstration d’une série de produits livrables en matière de recherche-développement (R-D) en constante évolution au CNRC. Le Fonds appuie la recherche exploratoire au moyen de deux mécanismes : l’Initiative « Nouveaux débuts » et l’Initiative « Petites équipes ».
Recipient Business Number
118838937
Recipient City
Ottawa|Ottawa
Recipient Country
CA
Recipient Legal Name
Carleton University
Recipient Postal Code
K1S 5B6
Recipient Province or Territory
ON
Recipient Type
S
Reference Number
172-2020-2021-Q4-944746