Search for dissertations about: "airfoil"

Showing result 1 - 5 of 21 swedish dissertations containing the word airfoil.

  1. 1. Computational studies of passive vortex generators for flow control

    University dissertation from Stockholm : KTH

    Author : Florian von Stillfried; KTH.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; passive flow control; vortex generator; statistical modelling; turbulence; separation prevention; flat plate; diffuser; high-lift design; airfoil; TECHNOLOGY Engineering mechanics Fluid mechanics; TEKNIKVETENSKAP Teknisk mekanik Strömningsmekanik;

    Abstract : Many flow cases in fluid dynamics face undesirable flow separation due torising static pressure on wall boundaries. This occurs e.g. due to geometry as ina highly curved turbine inlet duct or e. READ MORE

  2. 2. Aerodynamic and Aeroacoustic Analysis of a Multi-Element Airfoil using Hybrid RANS/LES Modeling Approaches

    University dissertation from Stockholm : KTH

    Author : Bastian Nebenführ; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ffowcs-Williams and Hawkings; HYB0; noise; hybrid RANS LES; multi-element airfoil; CAA; Kirchhoff; Curle; high-lift;

    Abstract : Global hybrid RANS/LES simulations were used for computing the turbulent flow around a three-element airfoil. Based on the results of the flow computations, a comprehensive analysis of the flow properties was performed. READ MORE

  3. 3. Experimental investigation of gas turbine airfoil aerodynamic performance without and with film cooling in an annular sector cascade

    University dissertation from Stockholm : Energiteknik

    Author : Sven-Henrik Wiers; KTH.; [2002]
    Keywords : turbomachinery; linear and annular cascade test facilities; steady state; flow wisualizaiton; prossure measurement;

    Abstract : .... READ MORE

  4. 4. Boundary layers over wing sections

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Prabal Negi; KTH.; KTH.; KTH.; [2017]

    Abstract : The understanding of developing boundary layers over wings is an important topic from the perspective of industrial applications. An increased understanding would be consequential not only for achieving higher fuel efficiency but also in the design of aircraft control strategies. READ MORE

  5. 5. Adjoint-based aerodynamic shape optimization

    University dissertation from Uppsala University

    Author : Olivier Amoignon; Uppsala universitet.; Uppsala universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Numerical Analysis; Numerisk analys;

    Abstract : An adjoint system of the Euler equations of gas dynamics is derived in order to solve aerodynamic shape optimization problems with gradient-based methods. The derivation is based on the fully discrete flow model and involves differentiation and transposition of the system of equations obtained by an unstructured and node-centered finite-volume discretization. READ MORE