Sökning: "unsteady pressure measurements"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden unsteady pressure measurements.

  1. 1. Experimental Investigation of the Aerodynamics of a Sailing Cargo Vessel with Four Rigid Wingsails under Unsteady Sailing Conditions

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Antonia Hillenbrand; [2022]
    Nyckelord :Experimental Aerodynamics; Pressure measurements; Sailing; Scale model testing; Trimming; Sea trial; Experimentell aerodynamik; Tryckmätning; Segling; Testning av skalamodeller; Trimning; Sjöprovning;

    Sammanfattning : Wind propulsion is a traditional way to propel ships over the oceans. In the recent development towards more sustainable shipping, sailing is considered in the industry again with high momentum. For a modern merchant ship, the aerodynamic forces generated on the particular rigging are unusual. LÄS MER

  3. 2. Calculation of Fluid Dynamic Loads on a Projectile During Firing : Development of a CFD-modelling Approach

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Viktor Hellberg; Rikard Fredriksson; [2016]
    Nyckelord :;

    Sammanfattning : The transition from inner to outer ballistics is a crucial part of the launch of a projectile from a recoilless rifle. Since a launch of the rifle is a rapid process and due to the extreme conditions in terms of accelerations and temperature, physical measurements are hard to achieve. LÄS MER

  4. 3. Aerodynamic Wind Tunnel in Passenger Car Application

    Master-uppsats, KTH/Mekanik

    Författare :Zhipeng Lyu; [2016]
    Nyckelord :Vehicle aerodynamics; 1 5th scale wind tunnel; unsteady pressure measurements; wind tunnel effects;

    Sammanfattning : The thesis aims to provide an evaluation on the Volvo 1/5th scaled wind tunnel regarding its potentials and capabilities in aerodynamic study. The flow quality in the test section was evaluated. The experiments were performed included measurements of airspeed stability, tunnel-wall boundary layer profile and horizontal buoyancy. LÄS MER

  5. 4. In situ evaluation of terminal and in-line sensor setups for unsteady pressure measurements

    Master-uppsats, KTH/Flygdynamik

    Författare :Otto Kuosmanen; [2016]
    Nyckelord :;

    Sammanfattning : The frequency response of an in-line pressure measuring setup was investigated in order to evaluate its suitability for use in wind tunnel measurements. Testing was conducted in a laboratory environment and a general procedure was developed for both the calibration of the sensors and obtaining the transfer functions for the setup. LÄS MER

  7. 5. Experimental Investigation of Shock Wave-Boundary Layer Interaction on a Generic Oscillating Bump

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Anthony Costanzo; [2014]
    Nyckelord :shock wave; boundary layer; fluid structure interaction; aeroelasticity;

    Sammanfattning : The presented research investigates the effects of shock wave boundary layer interaction on the unsteady pressure response of the surface of an oscillating structure. A simplified structure, a 2D prismatic bump, located in a straight channel is used to better understand the bending flutter phenomenon. LÄS MER