Sökning: "Per Weinerfelt"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Per Weinerfelt.

1. 1. On a Viscous-Inviscid Interaction Model for Aeronautical Applications

   Författare :Mikaela Lokatt; Ulf Ringertz; David Eller; Per Weinerfelt; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flyg- och rymdteknik; Aerospace Engineering;

   Sammanfattning : 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. LÄS MER

3. 2. Data Assimilation in Fluid Dynamics using Adjoint Optimization

   Författare :Johan Lundvall; Vladimir Kozlov; Per Weinerfelt; Matts Karlsson; Anders Szepessy; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Data assimilation; Inverse problem; Adjoint optimization; Burgers equation; nonlinear; Landweber; Initial pressure; Euler flow; Applied mathematics; Tillämpad matematik;

   Sammanfattning : Data assimilation arises in a vast array of different topics: traditionally in meteorological and oceanographic modelling, wind tunnel or water tunnel experiments and recently from biomedical engineering. Data assimilation is a process for combine measured or observed data with a mathematical model, to obtain estimates of the expected data. LÄS MER

4. 3. Aspects of the recursive projection method applied to flow calculations

   Författare :Joakim Möller; Jesper Oppelstrup; Per Weinerfelt; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Datorteknik; applied mechanics; computer science; aerospace; Datorteknik; Computer engineering; Datorteknik;

   Sammanfattning : In this thesis, we have investigated the Recursive Projection Method, RPM, as an accelerator for computations of both steady and unsteady flows, and as a stabilizer in a bifurcation analysis.The criterion of basis extraction is discussed. LÄS MER

5. 4. Eigenvalue analysis and convergence acceleration techniques for summation-by-parts approximations

   Författare :Andrea Alessandro Ruggiu; Jan Nordström; Per Weinerfelt; Daniel Appelö; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Many physical phenomena can be described mathematically by means of partial differential equations. These mathematical formulations are said to be well-posed if a unique solution, bounded by the given data, exists. LÄS MER

7. 5. An experimental study on the stability and control of a tailless aircraft

   Författare :Gloria Stenfelt; Ulf Ringertz; Per Weinerfelt; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vehicle engineering; Farkostteknik;

   Sammanfattning : .... LÄS MER