Sökning: "potential flows"
Visar resultat 1 - 5 av 289 avhandlingar innehållade orden potential flows.
1. Disentangling Trade Flows : Firms, Geography and Technology
Sammanfattning : This thesis consists of three individual studies and a common introduction. Albeit distinct and self-contained, all studies are devoted to how and why trade flows adjust according to characteristics of markets and attributes of links between markets. LÄS MER
2. Numerical and Experimental study of shock boundary layer interaction in unsteady transonic flow
Sammanfattning : A prerequisite for aeroelastic stability prediction inturbomachines is the understanding of the fluctuatingaerodynamic forces acting on the blades. Unsteady transonicflows are complex because of mutual interactions betweentravelling pressure waves, outlet disturbances, shock motion,and fluctuating turbulent boundary layers. LÄS MER
3. 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
4. Potential Flow Panel Methods for the Calculation of Free-surface Flows with Lift
Sammanfattning : Two non-linear Rankine-source panel methods are developed and implemented in the same computer code. The first method uses a four-point upwind operator on the free-surface to compute the velocity derivatives and to enforce the radiation condition while the second method uses an analytical expression for the velocity derivatives and a collocation point shift one panel upstream to prevent upstream waves. LÄS MER
5. Green-Blue Water Potential: : Building water resilience to attain the SDGs on food and poverty in Africa
Sammanfattning : Attaining the Sustainable Development Goals (SDGs) of eradicating hunger and securing sustainable food for all by 2030, constitutes a major global challenge, particularly in sub-Saharan Africa (SSA). Here, malnourishment, poverty, and population growth are among the highest in the world, and some regions are constantly subject to extreme water variability and scarcity. LÄS MER