Sökning: "flat-plate"

Visar resultat 1 - 5 av 42 uppsatser innehållade ordet flat-plate.

1. 1. Incorporating Flax Fiber Composites in Hypercar Panels

   Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Författare :Hanna Öster; Sara Isorena Guðjónsdóttir; [2023]
   Nyckelord :sound transmission loss; coincidence frequency; sound pressure level; flax fibre; carbon fibre; ljudtransmission; koincidensfrekvens; ljudtrycksnivå; linfiber; kolfiber;

   Sammanfattning : This thesis investigates sound transmission loss through flat finite panels using composite materials, which incorporate both carbon and flax fibres. The study wascarried out by performing FEM simulations developed and validated in steps. Thevalidation process was time-consuming but crucial in ensuring the model’s reliability. LÄS MER

3. 2. Experimental Testing of Solar Photovoltaic/Thermal Collectors for Low Temperature Heat Pump Integration

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Jaakko Eskola; [2023]
   Nyckelord :Solar photovoltaic thermal; PVT; heat pump; thermal performance; ISO 9806:2017; Solhybrid; PVT; värmepump; termisk prestanda; ISO 9806:2017;

   Sammanfattning : A hybrid photovoltaic/thermal (PVT) collector enables simultaneous electricity and heat production from a single solar module. Integrating PVT collectors with a ground source heat pump (GSHP) improves the seasonal performance of the heating system and prevents from temperature degradation of the ground. LÄS MER

4. 3. Development of a CFD Boundary Condition to Simulate a Perforated Surface

   Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

   Författare :Medet Kiflemariam; [2021]
   Nyckelord :Computational Fluid Dynamics; CFD; Boundary Condition; Bleed; Aerospace Engineering; Aeronautical Engineering; Physics;

   Sammanfattning : In aircraft with jet propulsion engine intakes at supersonic speed, strong pressure waves referred to as shockwaves occur, which may interact with any present boundary layers along the intake surface. The adverse pressure gradients associated with Shock Wave-Boundary Layer Interaction (SWBLI) may cause boundary layer flow separation, which can result in disturbances of the flow that can be harmful to the device or decrease engine performance. LÄS MER

5. 4. Deep learning for non-intrusive sensing in turbulence with passive scalars

   Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

   Författare :Arivazhagan Geetha Balasubramanian; [2021]
   Nyckelord :Turbulent boundary layer; passive scalar; direct numerical simulation; Prandtl number; Machine learning; convolutional neural network; Turbulent gränsskikt; passiv skalär; direkt numerisk simulering; Prandtl-nummer; maskininlärning; faltningsneurala nätverk;

   Sammanfattning : The near-wall modelling of turbulent flows has been an active field of research due to the computational cost associated with the direct numerical simulations of such flow, which are characterized by a wide range of length and time scales. With the recent advancements in technological capabilities, the availability of high-fidelity data has enabled the construction of data-driven approaches to model turbulence. LÄS MER

7. 5. Development and validation of an improved wall-function boundary condition for computational aerodynamics

   Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

   Författare :Carlo Loris Palombo; [2021]
   Nyckelord :Wall Functions; Wall Treatment; M-Edge; Computational Fluid Dynamics; Turbulent Boundary Layer; Turbulence Models; Väggfunktionsranvillkor; M-Edge; Strömningsmekaniska beräkningar; Turbulent Gränsskikt; Turbulensmodeller;

   Sammanfattning : Computational Fluid Dynamics is a powerful and widely used tool for developing projectsthat concern flow motion, in very different fields. Industrial CFD solvers are continuouslydeveloped with the aim of improving accuracy and reducing the computational cost of thesimulations. LÄS MER