Sökning: "streamtube"
Visar resultat 1 - 5 av 6 avhandlingar innehållade ordet streamtube.
1. The Hydrodynamics of Waterjet/Hull Interaction
Sammanfattning : The objective of the present investigation is to explore the physics behind the waterjet/hull interaction, and in particular the negative thrust deduction often reported in the semi-planing speed range. Another objective is to propose a validated numerical technique for computing the hydrodynamics of waterjet-driven hulls. LÄS MER
2. Fluid Mechanics of Vertical Axis Turbines : Simulations and Model Development
Sammanfattning : Two computationally fast fluid mechanical models for vertical axis turbines are the streamtube and the vortex model. The streamtube model is the fastest, allowing three-dimensional modeling of the turbine, but lacks a proper time-dependent description of the flow through the turbine. LÄS MER
3. Aerodynamics of Vertical Axis Wind Turbines : Development of Simulation Tools and Experiments
Sammanfattning : This thesis combines measurements with the development of simulation tools for vertical axis wind turbines (VAWT). Numerical models of aerodynamic blade forces are developed and validated against experiments. The studies were made on VAWTs which were operated at open sites. LÄS MER
4. Fluid mechanical simulations and development for vertical axis turbines
Sammanfattning : The aerodynamics of vertical axis turbines is typically studied using streamtube, vortex or CFD models. This thesis focuses on the first two models, which are the computationally faster ones. LÄS MER
5. Analytical Aerodynamic Simulation Tools for Vertical Axis Wind Turbines
Sammanfattning : Wind power is a renewable energy source that is today the fastest growing solution to reduce CO2 emissions in the electric energy mix. Upwind horizontal axis wind turbine with three blades has been the preferred technical choice for more than two decades. This horizontal axis concept is today widely leading the market. LÄS MER