Sökning: "compressible CFD"
Visar resultat 1 - 5 av 13 avhandlingar innehållade orden compressible CFD.
1. CFD Methods for Predicting Aircraft Scaling Effects
Sammanfattning : This thesis deals with the problems of scaling aerodynamic data from wind tunnel to free flight conditions. The main challenges when this scaling should be performed is how the model support, wall interference and the potentially lower Reynolds number in the windtunnel should be corrected. LÄS MER
2. Study of Supersonic Jet Noise Reduction using LES
Sammanfattning : Increases in air traffic and denser population around airports have led to stricterregulations on aircraft noise. High noise levels from high-speed aircraft can causehearing damage in pilots and the airfield personnel. The engine is the main sourceof noise of all jet aircraft and is therefore a key component for improvement. LÄS MER
3. Acceleration of Compressible Flow Simulations with Edge using Implicit Time Stepping
Sammanfattning : Computational fluid dynamics (CFD) has become a significant tool routinely used in design and optimization in aerospace industry. Typical flows may be characterized by high-speed and compressible flow features and, in many cases, by massive flow separation and unsteadiness. LÄS MER
4. Acceleration of Compressible Flow Simulations with Edge Using Implicit Time Stepping
Sammanfattning : Computational fluid dynamics (CFD) is a significant tool routinely used indesign and optimization in aerospace industry. Often cases with unsteadyflows must be computed, and the long compute times of standard methods hasmotivated the present work on new implicit methods to replace the standardexplicit schemes. LÄS MER
5. On determining lost core viability in high-pressure die casting using Computational Continuum Mechanics
Sammanfattning : The subject of this thesis work is to investigate whether Computational ContinuumMechanics (CCM) can serve as a valuable tool for the casting engineerto determine a priori whether a housing concept with inlying geometries thatso far only exists in Computer Aided Design (CAD) will have the desired coolingperformance and will be manufacturable with an acceptable number ofrejects.As of spring 2019, no application in serial production of lost cores, i. LÄS MER