Essays about: "flutter"

Showing result 31 - 35 of 48 essays containing the word flutter.

1. 31. Development of a Shrouded SteamTurbine Flutter Test Case

   University essay from KTH/Kraft- och värmeteknologi

   Author : Ren Jinghe; [2017]
   Keywords : shrouded blade; flutter; hot-to-cold; CFD; höljet; fladdret; hot-to-cold; CFD;

   Abstract : A shrouded blade was designed as a test case for flutter analysis of steam turbine. Flutter is a self-excitedvibration. It can lead to dramatic blade loss and high-cycle fatigue. Shrouded blade is more complicated onflutter analysis, because the mode shapes are more complex with bending and torsion components atdifferent phases. READ MORE

3. 32. Establishment of an open 3D steam turbine flutter test case

   University essay from KTH/Energiteknik

   Author : Di Qi; [2016]
   Keywords : ;

   Abstract : An open three-dimensional (3D) flutter test case for steam turbines is presented. Unlike previous research on turbine flutter, the geometry is an open resource and is from a test case originally presented by Durham University. READ MORE

4. 33. NUMERICAL SIMULATIONS OF FRICTION-INDUCED NOISE OF AUTOMOTIVE WIPER SYSTEMS

   University essay from KTH/MWL Marcus Wallenberg Laboratoriet

   Author : Océane Roure; [2015]
   Keywords : Squeal noise; wiper system; numerical simulations; finite element model; mode-coupling; design of experiments; Farmer diagram;

   Abstract : Automotive parts may be the cause of very annoying friction-induced noise and the source of many customer complaints. Indeed, when a wiper operates on a windshield, vibratory phenomena may appear due to flutter instabilities and may generate squeal noise. READ MORE

5. 34. Validation of non-linear time marching and time-linearised CFD solvers used for flutter prediction

   University essay from KTH/Kraft- och värmeteknologi

   Author : Ruben Erives Anchondo; [2015]
   Keywords : Validation; flutter; linear; non-linear;

   Abstract : The turbomachinery related industry relies heavily on numerical tools for the design and development of modern turbomachines. In order to be competitive turbomachines ought to be highly efficient and robust. This has lead engineers to develop more aggressive designs, which often leads to lower margins of structural reliability. READ MORE

6. 35. Feasibility Study of a 3D CFD Solution for FSI Investigations on NREL 5MW Wind Turbine Blade

   University essay from KTH/Kraft- och värmeteknologi

   Author : Giacomo Bernardi; [2015]
   Keywords : HAWT; CFD; Aeroelasticity;

   Abstract : With the increase in length of wind turbine blades flutter is becoming a potential design constrain, hence the interest in computational tools for fluid-structure interaction studies. The general approach to this problem makes use of simplified aerodynamic computational tools. READ MORE