Search for dissertations about: "hydraulic thesis"

Showing result 1 - 5 of 458 swedish dissertations containing the words hydraulic thesis.

2. 1. Hydraulic fill transport : flow characterization of cyclone classified tailings

   Author : Åsa Sundqvist; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vattenteknik; Water Resources Engineering;

   Abstract : .... READ MORE

4. 2. Numerical and experimental study of performance of a hydraulic motor

   Author : Leon Dahlén; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydraulic fluid; hydrostatic transmission; hydraulic motor; Engineering mechanics; Teknisk mekanik; Maskinelement;

   Abstract : The aim of this study was to develop an understanding of the fluid properties that influence the efficiency of hydraulic systems in a steady-state, especially components in hydrostatic transmission systems under different running conditions. The aim has also been to investigate and model the sources of losses in hydraulic machines, in order to estimate the losses, taking fluid properties into account. READ MORE

5. 3. Decentralizing hydraulic society : Actor responses to institutional arrangements in Vietnam

   Author : Thi Bich Ngoc Pham; Hans Holmén; Magnus Jirström; Christer Gunnarsson; Linköpings universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Accountability; actors; autonomy; incentives; institutional arrangements; irrigation management; participation; power relations; Vietnam; Aktörer; ansvar; delaktighet; decentralisering; incitament; institutionella arrangemang; konstbevattning; maktrelationer; självständighet; Vietnam;

   Abstract : Irrigation decentralization has been launched worldwide with high expectations of improved governance, efficiency, and productivity through  democratic processes. However, there is widespread recognition that decentralization is, in reality, unlikely to bring about these positive outcomes. READ MORE

6. 4. On Motion Control of Linear Incremental Hydraulic Actuators

   Author : Martin Hochwallner; Petter Krus; Kalevi Huhtala; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Linear Incremental Hydraulic Actuator; novel actuator; linear hydraulic actuator; tracking problem; hydraulic servo system; digital fluid power;

   Abstract : Linear Incremental Hydraulic Actuators combine one or more short-stroke cylinders, and two or more engaging/disengaging mechanisms into one actuator with long, medium, or even unlimited stroke length. The motion of each single short-stroke actuator concatenated by the engaging/disengaging mechanisms forms the motion of the linear incremental hydraulic actuator. READ MORE

7. 5. Investigation of Suffusion in Glacial Till Dam Cores : Testing methods and critical hydraulic gradients

   Author : Ingrid Silva; Jan Laue; Peter Viklander; Thomas Pabst; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; internal erosion; suffusion; glacial till; dam cores; dams; experimental investigation; hydraulic gradient; testing methods; cohesionless soils; granular soils; Geoteknik; Soil Mechanics;

   Abstract : Suffusion is an internal erosion mechanism that occurs in embankment dams when fine grained particles in the dam core are washed out by seepage. Initiation of internal erosion depends mainly on three major factors: grain size distribution of the soil, stress conditions and hydraulic gradient; whilst its continuation depends on the properties of the filter. READ MORE