Search for dissertations about: "material flow analysis picture"

Showing result 1 - 5 of 9 swedish dissertations containing the words material flow analysis picture.

2. 1. On sustainability assessment of technical systems : experience from systems analysis with the ORWARE and ecoeffect tools

   Author : Getachew Assefa; Björn Frostell; Thomas Nybrant; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; technology assessment; interdisciplinarity; sustainability; sustainability assessment; industrial ecology; substance flow analysis; material flow analysis; life cycle assessment; Environmental engineering; Miljöteknik;

   Abstract : Engineering research and development work is undergoing a reorientation from focusing on specific parts of different systems to a broader perspective of systems level, albeit at a slower pace. This reorientation should be further developed and enhanced with the aim of organizing and structuring our technical systems in meeting sustainability requirements in face of global ecological threats that have far-reaching social and economic implications, which can no longer be captured using conventional approach of research. READ MORE

4. 2. Large Eddy Simulation of Cavitating Flow on Hydrofoils

   Author : Nai Xian Lu; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : Cavitation is the occurrence of vapour pockets in liquids due to the phenomenon that liquid may turn into vapour when the pressure in the flow is lowered below the vaporization pressure. It often brings negative effects such as performance degradation, noise and vibration, and material damage, therefore becoming one of the limiting factors when designing the propulsion systems. READ MORE

5. 3. Computational Modelling for Cavitation and Tip Vortex Flows

   Author : Abolfazl Asnaghi; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cavitation; SST k − ω; OpenFOAM; Propeller; LES; Numerical simulation; Cur- vature correction; Elliptical foil; Inception; Twisted Delft foil;

   Abstract : Cavitation often brings negative effects, such as performance degradation, noise, vibration, and material damage, to marine propulsion systems, but for optimum performance, cavitation is almost inevitable. Therefore, it is necessary to better understand cavitation in order to maximize the performance without encounter- ing severe problems. READ MORE

6. 4. Modelling Cavitation Mechanisms Using Large Eddy Simulation

   Author : Nai Xian Lu; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydrodynamics; Cavitation; cavitation erosion; cavitation mechanisms; numerical simulation; LES;

   Abstract : Cavitation often brings negative effects such as performance degradation, noise and vibration, and material damage, being one of the limiting factors when designing propulsion systems. On the other hand, cavitation must be endured for an efficiently propelled system. READ MORE

7. 5. On Managing Disruption Risks in the Supply Chain - the DRISC model

   Author : Ulf Paulsson; Företagsekonomiska institutionen; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; supply chain vulnerability; Management of enterprises; Riskhantering; Företagsledning; management; Risk Management and Safety engineering; logistics.; supply chain management; risk management; business continuity management; supply chain risks; disruption risks; supply chain disturbances; Supply chain risk management; supply chain disruptions;

   Abstract : Background Today's modern, industrialized society is based on globalization, specialization and mass-production. It is a society dependent upon highly integrated, continuously ongoing supply chain flows. READ MORE