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Finite-Volume Scheme for the Solution of Integral Boundary Layer Equations
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, Flygdynamik.ORCID-id: 0000-0003-1604-4262
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, Flygdynamik.ORCID-id: 0000-0002-3199-8534
(engelsk)Manuskript (preprint) (Annet vitenskapelig)
HSV kategori
Forskningsprogram
Flyg- och rymdteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-184794OAI: oai:DiVA.org:kth-184794DiVA, id: diva2:916888
Forskningsfinansiär
VINNOVA, 2014-00933
Merknad

QC 20160405

Tilgjengelig fra: 2016-04-05 Laget: 2016-04-05 Sist oppdatert: 2016-04-05bibliografisk kontrollert
Inngår i avhandling
1. On a Viscous-Inviscid Interaction Model for Aeronautical Applications
Åpne denne publikasjonen i ny fane eller vindu >>On a Viscous-Inviscid Interaction Model for Aeronautical Applications
2016 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

The work presented in this thesis concerns the development of a viscous-inviscid interaction model for prediction of viscous flow properties in aeronautical applications. The inviscid model is based on an existing potential flow model and the thesis thus focuses on the development of a viscous model based on the three-dimensional integral boundary layer equations. The model is to be applicable to complex geometries with unstructured meshes and this requirement, in combination with the fairly complex character of the integral boundary layer equations, sets high standards for the discretization. In order to arrive at a stable and well-conditioned scheme a number of topics related to the formulation and discretization of the integral model are analyzed and discussed. These include the challenge of finding a discretization which ensures flow conservation on curved surfaces and provides a stable and well-conditioned discretization for mixed-hyperbolic systems of conservation laws. Different coupling strategies for the viscous and inviscid models are discussed and analyzed and so are the singularities in the integral boundary layer equations in separated flow regions. The predictions of the resulting viscous-inviscid coupling scheme are validated by comparison to experimental measurements as well as to predictions from other numerical models. The currently developed coupled model is found to provide reasonably accurate predictions of viscous flow properties in laminar as well as turbulent flow regions while being stable and convergent in separated flow regions.

sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2016. s. 25
Serie
TRITA-AVE, ISSN 1651-7660 ; 2016:15
HSV kategori
Forskningsprogram
Flyg- och rymdteknik
Identifikatorer
urn:nbn:se:kth:diva-184792 (URN)
Presentation
2016-04-29, Freja, Teknikringen 8, Stockholm, 14:00 (engelsk)
Opponent
Veileder
Forskningsfinansiär
VINNOVA, 2014-00933
Merknad

QC 20160405

Tilgjengelig fra: 2016-04-05 Laget: 2016-04-05 Sist oppdatert: 2016-04-05bibliografisk kontrollert

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