Essays about: "Boundary conditions"

Showing result 1 - 5 of 431 essays containing the words Boundary conditions.

1. 1. Insights Into Wind Profile Characteristics in the Arctic Marine Boundary Layer

   University essay from Uppsala universitet/Luft-, vatten- och landskapslära

   Author : Charlotte Sophie Gausa; [2024]
   Keywords : Arctic; wind profile power law; MOST; boundary layer; low level jets; sea ice; vindprofil; Arktis; gränsskikt; vindenergi; låghöjdsvindar; havsis;

   Abstract : The atmospheric boundary layer in the Arctic is essential for the understanding of climate change and improving regional weather prediction. The aim of this study is to investigate to which degree wind speed profiles retrieved in the Arctic agree with well known wind profile concepts and understand which local impact factors influence the wind speed profile. READ MORE

3. 2. Solving the incompressible Navier-Stokes equations in 3-D to model gas flow in a room

   University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

   Author : Fredrik Malmström; [2024]
   Keywords : ;

   Abstract : The thesis proposes to model the flow of gases in a room by solving the incompressible Navier-Stokes equations in three dimensions. The transportationof scalars such as temperature and concentration of CO2 is modeled by solving the advection-diffusion equation, and the effects of temperature on thevelocity is accounted for by employing the Boussinesq approximation. READ MORE

4. 3. Do viscous flows slip?

   University essay from Göteborgs universitet/Institutionen för matematiska vetenskaper

   Author : Björn Sjösvärd; [2023-12-21]
   Keywords : Mathematics; partial differential equations; multivectors; Hodge de-compositions; the Stokes equation; Hodge boun;

   Abstract : In this thesis, the Stokes equation is discussed and solved under different boundary conditions. The Stokes equation governs the flow of viscous liquids, for example honey or syrup. The first chapters in the thesis provides an introduction to multivector algebra and analysis, with the aim of presenting the concept of Hodge decompositions. READ MORE

5. 4. High-Temperature Thermal Energy Storage for Innovative Hybrid CSP/PV Plants : A Comprehensive Design Optimization

   University essay from KTH/Energiteknik

   Author : Lorenzo Centonze; [2023]
   Keywords : ;

   Abstract : By means of a literature review, critical parameters in the context of thermal energy storage systems, particularly packed bed thermal energy storage systems are identified. The goals of this thesis project are to come up with an optimized design for a PBSTES and to evaluate the thermal performance of alternative storage materials derived from byproducts of industrial processes and natural rocks in order to reduce the environmental impact of the designed system. READ MORE

6. 5. Tribological characterization of a ball bearing subjected to an electric field : Electric drivetrain tribology

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Muhammad Umar Farooq; [2023]
   Keywords : Ball bearing; electric drivetrain; tribology; electric field; characterization; bearing currents; discharge;

   Abstract : Electric machines are widely used in for instance the automotive industry in electric vehicles and in wind turbines. The electrical machines have mechanical bearings as an integral part used to transmit power and load. In addition, the main function includes reducing friction between interacting surfaces. READ MORE