Search for dissertations about: "mechanical engineer"

Showing result 1 - 5 of 62 swedish dissertations containing the words mechanical engineer.

2. 1. Development and Validation of a Numerical Tool for the Aeromechanical Design of Turbomachinery

   Author : María Angélica Mayorca; Torsten Fransson; Damian Vogt; Eric Seinturier; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aeromechanical design; turbomachinery; numerical tool; reduced order modeling; mistuning; ROM; aero-structure coupling; CFD; FEM; methods; Mechanical energy engineering; Mekanisk energiteknik;

   Abstract : In aeromechanical design one of the major rules is to operate under High Cyclic Fatigue (HCF) margins and away from flutter. The level of dynamic excitations and risk of HCF can be estimated by performing forced response analyses from blade row interaction forces or Low Engine Order (LEO) excitation mechanisms. READ MORE

4. 2. Systems Analysis of Chemicals Production via Integrated Entrained Flow Biomass Gasification : Quantification and improvement of techno-economic performance

   Author : Jim Andersson; Eric D. Larson; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

   Abstract : Lignocellulosic biomass gasification is a promising production pathway for green chemicals, which can support the development towards a more sustainable society where fossil fuels are replaced. To be able to compete with fossil fuels, a highly efficient production of biomassbased products is required in order to maximize overall process economics and to minimizenegative environmental impact. READ MORE

5. 3. Assessment of bio-based fuel ash effects on magnesia refractory materials in quicklime production kilns

   Author : Naresh Kumar Wagri; Britt M. Andersson; Markus Carlborg; Markus Broström; Matias Eriksson; Bengt-Johan Skrifvars; Umeå universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Refractory corrosion; ash slag intrusion; lime kiln; MgO refractory; coal ash; olive pomace ash; biomass fuel; crushing strength; potassium K ; silicon Si .; Materials Science; materialvetenskap;

   Abstract : Limestone is calcined into quicklime in lime kilns at temperatures above 1000°C. Heat is supplied through combustion inside the kilns, which are insulated with a lining of refractory bricks to mitigate heat loss and to protect the kiln from the hot, chemically aggressive, and mechanically abrasive environment. READ MORE

6. 4. Modelling and simulation of mechanical systems with displacement limitations

   Author : Annika Stensson; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

   Abstract : Systems with displacement limitations have an abrupt change in the characteristics of the system for a certain displacement. This type of event often occurs in engineering applications and it is of importance to find out how this sudden contact can influence the behaviour of the system. READ MORE

7. 5. Supplying engineer-to-order joinery products to the construction Industry

   Author : Samuel Forsman; Matilda Höök; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träteknik; Wood Technology;

   Abstract : The supplying of engineer-to-order joinery products to the construction industryis considered a novel research area in the wood-related literature as well as in theconstruction-related literature. The process of supplying the construction industrywith highly refined one-of-a-kind wood products is examined in this thesis, andmore specifically, an organization using a mixture of concept-to-order and designto-order production strategies to produce Engineer-to-order Joinery Products. READ MORE