Sökning: "leading edge"
Visar resultat 16 - 20 av 108 avhandlingar innehållade orden leading edge.
16. A Critical Study of Models in Turbulent Combustion
Sammanfattning : Paper I-III focuse on the problem to validate models for premixed turbulent flames. The main result of paper I is the formulation of an analytical method for prediction of turbulent flame velocities from turbulent flame models. The method is motivated by a mathematical theory by Kolmogorov, Petrovskii and Piskunov (1937). LÄS MER
17. Direct Numerical Simulation of Boundary-layer Transition with Free-stream Turbulence
Sammanfattning : This thesis considers the generation and influence of free-stream turbulence toboundary layer transition on both flat and curved bodies in the flow. Variousflow configurations such as flow around the flat plate with a sharp leading edgeand low-pressure turbine blades are considered. LÄS MER
18. Stability and transition on wind turbine blades
Sammanfattning : Transition on wind turbine blades is a highly complex phenomenon due to the myriad effects influencing the process. This thesis studies some of them, namely free-stream turbulence (FST), rotation, and three-dimensionality. The investigations employ large eddy simulations (LES) with and without (implicit or wall-resolved LES) a subgrid-scale model. LÄS MER
19. Machine learning applications for predicting the pedestal in tokamak plasmas
Sammanfattning : Magnetic confinement fusion is a field of research that strives to develop an environmental friendly energy source to assist in powering our society. By confining a plasma with magnetic fields, conditions that enable nuclear fusion can be achieved. However, gaining a high efficiency has proven to be a challenging task. LÄS MER
20. Experimental design and vortex analyses in turbulent wake flows
Sammanfattning : A new experimental setup for studies on wake flow instability and its control that successfully has been designed and manufactured, is introduced and de- scribed. The main body is a dual-sided flat plate with an elliptic leading edge and a blunt trailing edge. LÄS MER