Essays about: "flutter"

Showing result 36 - 40 of 48 essays containing the word flutter.

1. 36. Validation of Time Domain Flutter PredictionTool with Experimental Results

   University essay from KTH/Kraft- och värmeteknologi

   Author : Enrique Camara; [2015]
   Keywords : Flutter; Vibration; Aeroelasticity; CFD;

   Abstract : In turbomachinery applications as propulsion and power generation, there is a continuous endeavour to design engines with higher efficiency, driving the compressor and turbine blades towards slimmer and more aerodynamically loaded configurations that frequently operate with fluids at higher temperatures and speeds. This combination of reduced design space and adverse operating environment makes the blades more susceptible to flutter and challenges the designer to predict its occurrence. READ MORE

3. 37. Uppkomst av metaboliska rubbningar hos häst under tävling i distansritt – omvårdnad och förbyggande åtgärder

   University essay from SLU/Dept. of Animal Environment and Health

   Author : Karin Bäck; [2014]
   Keywords : distsansridning; metaboliska problem; dyhydrering; elektrolyt;

   Abstract : During an endurance riding competition the onset of metabolic disorders leading up to elimination from the race are common. As many as 8,7 % of the horses participating in international endurance riding competitions are eliminated due to metabolic causes such as tachycardia, absence of borborygmi, hyperthermia and dehydration. READ MORE

4. 38. Experimental Investigation of Shock Wave-Boundary Layer Interaction on a Generic Oscillating Bump

   University essay from KTH/Kraft- och värmeteknologi

   Author : Anthony Costanzo; [2014]
   Keywords : shock wave; boundary layer; fluid structure interaction; aeroelasticity;

   Abstract : 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. READ MORE

5. 39. Numerical modeling of flutter in a transonic fan

   University essay from KTH/Flygdynamik

   Author : Olivier Milandre; [2014]
   Keywords : ;

   Abstract : Flutter is a self-feeding and potentially destructive vibration that can lead to devastating effects such as broken blades. Using accurate numerical models to predict flutter in the conception of an engine is essential to avoid huge waste of money. READ MORE

6. 40. A Method for Efficient Flutter Analysis of Systems with Uncertain Modeling Parameters

   University essay from KTH/Optimeringslära och systemteori

   Author : Mikaela Lokatt; [2014]
   Keywords : ;

   Abstract : A method for efficient analysis of variations in utter speed predictions caused by parameter variations in the mass, stiffness and aerodynamic models of a wing structure is presented. The analysis method considers a linear uncertainty formulation and performs a perturbation analysis based on computation of eigenvalue differentials of a nominal system matrix. READ MORE