Search for dissertations about: "Jesper Oppelstrup"

Showing result 1 - 5 of 8 swedish dissertations containing the words Jesper Oppelstrup.

  2. 1. Multidisciplinary Design in Aeronautics, Enhanced by Simulation-Experiment Synergy

    Author : Tomas Melin; Arthur Rizzi; Jesper Oppelstrup; Ray Whitford; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aeronautics; conceptual design; design; high lift systems; Vehicle engineering; Farkostteknik;

    Abstract : This thesis covers some aspects of current aircraft design, and presents how experiment and simulation are used as tools. Together they give enhanced effects over employing either one separately. The work presented has been produced using both simulations and experiments. READ MORE

  4. 2. Validated Modelling of Electrochemical Energy Storage Devices

    Author : Niklas Mellgren; Anders Dahlkild; Michael Vynnycky; Jesper Oppelstrup; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lithium ion battery; polymer electrolyte fuel cell; modelling; model validation; parameter fitting; Fluid mechanics; Strömningsmekanik;

    Abstract : This thesis aims at formulating and validating models for electrochemical energy storage devices. More specifically, the devices under consideration are lithium ion batteries and polymer electrolyte fuel cells. A model is formulated to describe an experimental cell setup consisting of a LixNi0.8Co0. READ MORE

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

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

    Abstract : 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. READ MORE

  6. 4. Spectral-element simulations of separated turbulent internal flows

    Author : Johan Ohlsson; Dan Prof Henningson; Jesper Oppelstrup; KTH; []
    Keywords : spectral element method; direct numerical simulations DNS ; turbulence; dealiasing; three-dimensional separation; massively parallel simulations;

    Abstract : .... READ MORE

  7. 5. Acceleration of Compressible Flow Simulations with Edge using Implicit Time Stepping

    Author : Evelyn Otero; Arthur Rizzi; Jesper Oppelstrup; Per Wahlund; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; compressible CFD; convergence acceleration; implicit time-stepping; matrix dissipation; line-implicit; performance optimization;

    Abstract : Computational fluid dynamics (CFD) has become a significant tool routinely used in design and optimization in aerospace industry. Typical flows may be characterized by high-speed and compressible flow features and, in many cases, by massive flow separation and unsteadiness. READ MORE