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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

CFD beräkning på en jetmotorinstallation / CFD Computation of a Jet Engine Setup

Jain, Arnav January 2013 (has links)
Hawk Turbine AB tillverkar mindre jetmotorer som ofta används i små obemannade och radiostyrda flygplan. I flygplansmodellen Lockheed T-33 Shooting Star är motorn monterad inuti planet varför luften måste ledas ut till atmosfären. För bästa möjliga prestanda måste ejektorn och utblåsröret som leder luften dimensioneras efter motor och flyghastighet. En 3-dimensionell CAD modell av flygplanets installation skapades och därefter simulerats i en virtuell vindtunnel med hjälp av datorprogrammet SolidWorks Flow Simulation. Flera olika utblåsrör i varierande storlekar samt olika former har testats för att avgöra om ändringar kan förbättra prestandan ytterligare. Simulationsresultat visar att det går att förbättra nuvarande konfiguration med 5,99 % om diametern på utblåsröret minskas från 75 mm till 70 mm med en bibehållen form på utblåsröret. / Hawk Turbine AB is a company that manufactures small jet engines which are often used in smaller unmanned and radio-controlled aircrafts. In the Lockheed T-33 Shooting Star aircraft the engine is mounted in the center of the aircraft and therefore requires ducts to be used for directing the exhaust to the atmosphere. For optimum performance the ejector and the exhaust manifold must be designed for the engine and the flight velocity. A 3-dimentional CAD model of the aircrafts ducts was created. The model was then used in virtual wind tunnel testing using the software SolidWorks Flow Simulation. Different shapes and sizes of the manifolds were tested in the simulations to determine if modifications can further improve the performance. The simulations show that the performance of the current manifold can be improved by 5,99 % if the diameter of the manifold is reduced from 75 mm to 70 mm while keeping the shape of the manifold unaltered.
12

Aerodynamic optimisation of highly loaded turbine cascade blades for heavy duty gas turbine applications

Cardamone, Pasquale January 2006 (has links) (PDF)
Zugl.: München, Univ. der Bundeswehr, Diss., 2006
13

Numerische und experimentelle Untersuchung des Einflusses von drehenden Rädern auf die Fahrzeugaerodynamik /

Wäschle, Alexander. January 2006 (has links)
Universiẗat, Diss.--Stuttgart.
14

Experimentelle und numerische Simulationen von Schadstoffausbreitungsvorgängen im Nahbereich von Gebäuden

Fischer, Josef January 2007 (has links)
Zugl.: München, Techn. Univ., Diss., 2007
15

Filmkühlung hochbeanspruchter Turbinenschaufelhinterkanten Wärmeübergang und Strömung im Nahfeld praxisbezogener Ausblasespalte

Martini, Patrick January 2008 (has links)
Zugl.: Karlsruhe, Univ., Diss., 2008
16

Berechnung der Stator-Rotor-Wechselwirkung in Turbomaschinen

Jung, Alexander. January 2000 (has links)
Stuttgart, Univ., Diss., 2000.
17

Entwicklung eines akustischen Messsystems für aerodynamisch optimierte Windkanäle

Guidati, Sandro. January 2005 (has links)
Stuttgart, Univ., Diss., 2005.
18

Flugmechanik und Flugregelung von Luftschiffen

Kämpf, Bernhard G., January 2004 (has links)
Zugl.: Stuttgart, Univ., Diss., 2004. / Druckausg. bei Utz, München erschienen.
19

Numerische Modellierung turbulenter Umströmungen von Gebäuden

Domingo López, Simón. Unknown Date (has links) (PDF)
Universiẗat, Diss., 2002--Bremen.
20

Berechnung und Verminderung von Strömungsgeräuschen an Profilen

Guidati, Gianfranco. Unknown Date (has links) (PDF)
Universiẗat, Diss., 2003--Stuttgart.

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