Search for dissertations about: "runner"
Showing result 16 - 20 of 54 swedish dissertations containing the word runner.
-
16. A study of mold flux entrapment and gas entrainment in an ingot casting process
Abstract : The focus of this work is to study the gas entrainment and mold flux entrapments during the ingot filling process based on physical and numerical modelling.The formation of the free surface was investigated in the uphill teeming method, which illustrates a dynamic change at a quasi-steady state. READ MORE
-
17. Adaptation in two species of Phaseolus with contrasting mating systems
Abstract : For common bean, the loss of photoperiod sensitivity has been a major pre-requisite for domestication and further adaptation to European climates. Its self-pollinated mating system also makes it a good model for identifying genes that display enhanced levels of differentiation in gene expression, together with its closely related species, open-pollinated runner bean. READ MORE
-
18. Modeling and numerical simulation of hydro power flows
Abstract : This work is about high precision numerical water flow simulations of hydro power related applications, and especially draft tube flows. Because of the accuracy requirements for these types of simulations (the efficiency of a hydro power turbine can be over 90%), the work has been devided into several steps; verification, validation and modeling. READ MORE
-
19. Mitigation of Rotating Vortex Rope in a Hydro Turbine using a Guide Vane System
Abstract : Using renewable energy, such as water or wind, to produce electricity has been proven highly effective in Sweden. The ability of these renewable resources to make clean output energy counters the adversities caused by non-renewable resources. Amongst these, hydro turbines are one of the most preferred methods for generating electricity from water. READ MORE
-
20. Grid frequency stability from a hydropower perspective
Abstract : Many AC grids suffer from decreased frequency stability due to less system inertia. This has increased the risk of large-scale blackouts. This thesis and its papers address the frequency stability problem from a hydropower perspective.Grid frequency stability assessments often require accurate system inertia estimates. READ MORE