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Showing result 1 - 5 of 549 essays matching the above criteria.

1. 1. The Role of Functional Traits and Trade-offs in Seasonal Succession of Phytoplankton Community Structuring : A numerical investigation of resource acquisition traits of Lake Constance

   University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Author : Ayesha Nagahage; [2024]
   Keywords : Phytoplankton; resource acquisition; traits; trade-off; resource limitation;

   Abstract : Long-term ecological research in deep lakes offers valuable insights into understanding changes in trophic states and organization of phytoplankton assemblages. Utilizing five decades of phytoplankton taxonomic trait data from pre-alpine Lake Constance, a confirmed negative relationship was found between phosphate and light affinity at the annual community trait level. READ MORE

3. 2. Computational Fluid Dynamics and Modeling of a Free Surface Flow

   University essay from KTH/Skolan för teknikvetenskap (SCI)

   Author : Mathieu Marmier; [2023]
   Keywords : CFD; Free Surface Flow; VOF; STAR-CCM ; Multiphase Simulation; Nuclear Engineering; Fluid Mechanics;

   Abstract : This project deals with the CFD modelling of a free surface flow. The aim is to develop and validate a fast and accurate numerical model for stratified two-phase flows. Volume of Fluid (VOF) multiphase model is employed. The purpose is to use the developed numerical model for the design of an element within a compact nuclear reactor. READ MORE

4. 3. Analysis of a shape morphing structural battery: manufacturing, analytical modeling and numerical simulation

   University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Author : Alfredo Bici; [2023]
   Keywords : ;

   Abstract : A reduction in the global use of fossil fuels is necessary when striving for a more sustainable future. One key strategy in the transition from fossil fuels is electrification. This strategy is particularly prominent within the transport sector, where more efficient ways to store electric energy are being pursued. READ MORE

5. 4. Optimization of a Floor Grinding Machine for Uniform Grinding Pattern

   University essay from Linköpings universitet/Produktrealisering

   Author : Adithya Srikantha Dath; [2023]
   Keywords : Numerical Optimization; Floor Grinders; Grinding Pattern; Engineering Optimization; Model Based Systems; Data Analysis;

   Abstract : Husqvarna Construction is one of the leading construction machinery manufacturers in the world. To stay in the forefront, investing in novel methods to model, test & and optimize machinery is crucial. The most important part of development and testing is to bridge the gap between desired and actual results. READ MORE

6. 5. On intermittency in the turbulent asymptotic suction boundary layer

   University essay from KTH/Skolan för teknikvetenskap (SCI)

   Author : Edoardo Foschi; [2023]
   Keywords : Turbulence; turbulent boundary layer; intermittency; numerical simulation; DNS; tripping; suction;

   Abstract : This thesis presents a series of direct numerical simulations (DNS) performed in order to understand the discrepancy in the literature regarding turbulent asymptotic suction boundary layers (TASBLs) at low Reynolds numbers. The hypothesis to be tested is that the main reason for higher turbulence intensities observed in experiments compared to DNS is that the latter exhibits intermittent patches of laminar flow, developing both temporally and spatially. READ MORE