Sökning: "FLUID"
Visar resultat 1 - 5 av 1660 uppsatser innehållade ordet FLUID.
1. Securitized or Not Securitized? : A Case Study of Sweden's COVID-19 Strategy During the First Year of the Pandemic
Master-uppsats, Uppsala universitet/Statsvetenskapliga institutionenSammanfattning : This thesis analyzes Sweden's unique and puzzling approach to the COVID-19 pandemic by using the securitization framework, exploring if Sweden's strategy during the pandemic's first year reflects securitization, (de)securitization, or non-securitization. It employs content analysis to evaluate Sweden's response, analyzing primary sources and academic literature, and uses a discourse table based on existing theoretical studies by Barry Buzan, Ole Waever, and Jaap de Wilde (1998) and Lene Hansen (2012) to assess indicators of securitization, (de)securitization or non-securitization. LÄS MER
2. CFD-simulering av värmeöverföring under upptändningsförlopp av krutraketmotor
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikSammanfattning : SAAB Dynamics producerar och utvecklar flertalet produkter som innehåller krutraketmotorer. Krutraketmotorers prestanda är kraftigt beroende av en effektiv upptändning och det är önskvärt att kunna prediktera detta förlopp numeriskt med god noggrannhet. Ingen etablerad simuleringsmetodik existerar i dagsläget. LÄS MER
3. Petrological, geochemical and structural evidence of fluid-rock interaction in the Siljan Ring
Kandidat-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaperSammanfattning : The Siljan Ring in Dalarna, Sweden is the site of the largest meteor impact crater in Europe and has long been a topic of discussion regarding methane production. However, the source of this methane and the timing of production in relation to the impact remain unclear. LÄS MER
4. Wall-Resolved and Wall-Modelled LES for a NACA4412 Wing Profile in OpenFOAM
Master-uppsats, KTH/Skolan för teknikvetenskap (SCI)Sammanfattning : The purpose of this study is to perform computational fluid dynamics (CFD) simulationfor an incompressible flow around an airfoil and investigate the aerodynamicproperties for different Reynolds numbers (400, 000 and 1, 000, 000) based on the chordlength, at the moderate angle of attack (AoA) of 5o . For this purpose a detailedevaluation of wall-resolved and wall-modelled large-eddy simulations (LES) wereconducted for the NACA4412 wing profile. LÄS MER
5. Aerodynamics simulations of Scania trucks using OpenFOAM
Master-uppsats, KTH/Teknisk mekanikSammanfattning : In the field of heavy-duty vehicles, fuel efficiency and environmental protection are factors that need to be focused on, while the aerodynamic drag generated during vehicle travelling is one of the most influential aspects. This thesis delves into the aerodynamic simulation of Scania trucks using the open-source Computational Fluid Dynamics (CFD) tool, OpenFOAM v2206. LÄS MER