Sökning: "potential flows"
Visar resultat 16 - 20 av 289 avhandlingar innehållade orden potential flows.
16. Experimental study on turbulent boundary-layer flows with wall transpiration
Sammanfattning : Wall transpiration, in the form of wall-normal suction or blowing through a permeable wall, is a relatively simple and effective technique to control the behaviour of a boundary layer. For its potential applications for laminar-turbulent transition and separation delay (suction) or for turbulent drag reduction and thermal protection (blowing), wall transpiration has over the past decades been the topic of a significant amount of studies. LÄS MER
17. Numerical and modelling aspects of large-eddy and hybrid simulations of turbulent flows
Sammanfattning : In this study, the explicit algebraic sub-grid scale (SGS) model (EAM) has been extensively validated in wall-resolved large-eddy simulations (LES) of wall-bounded turbulent flows at different Reynolds numbers and a wide range of resolutions. Compared to eddy-viscosity based models, the formulation of the EAM is more consistent with the physics and allows to accurately capture SGS anisotropy,which is relevant especially close to walls. LÄS MER
18. Cavity Purge Flows in High Pressure Turbines
Sammanfattning : Turbomachinery forms the principal prime mover in the energy and aviation industries. Due to its size, improvements to this fleet of machines have the potential of significant impact on global emissions. LÄS MER
19. Geophysical methods for the investigation of subsurface flows
Sammanfattning : Geophysical methods of investigating the substratum have been proven to provide quality data for a variety of applications. Despite this fact, such methods are not used in some fields to the degree that they could be. LÄS MER
20. Toward Lean Remanufacturing : Challenges and Improvements in Material and Information Flows
Sammanfattning : Remanufacturing is an environmentally sound material recovery option which is essential to compete for sustainable manufacturing. The aim with remanufacturing at a majority of companies is to prolong physical product performance by delivering the same or betterthan-original product quality. LÄS MER