Sökning: "Reynolds-Averaged Navier-Stokes Equations"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden Reynolds-Averaged Navier-Stokes Equations.

1. 1. CFD Analysis of the Flow Around a Paraglider Wing

   Master-uppsats, KTH/Teknisk mekanik

   Författare :Caterina Gennari; [2023]
   Nyckelord :Paraglider Wing; CFD; RANS; DES; Aerodynamics; Aerodynamic Hysteresis; FSI; Deformable Structure; Membrane; Shell Elements;

   Sammanfattning : In this study, the characteristics of the flow around a paraglider wing were investigated through the use of Computational Fluid Dynamics (CFD) simulations by solving both Reynolds Averaged Navier-Stokes equations and Delayed Detached Eddy Simulations were employed. This allowed the observation of how the unique shape of the canopy of a paraglider can influence the behaviour of the flow and how aerodynamic hysteresis can manifest on this sort of wing. LÄS MER

3. 2. Hydroacoustic Modelling of Podded Propulsion System : Underwater Radiated Noise Prediction Using ANSYS

   Master-uppsats, KTH/Teknisk mekanik

   Författare :Martin Persson; [2022]
   Nyckelord :Fluid Mechanics; Computational Aeroacoustics; Frequency Response; Noise and Vibration; Pod; Propulsion System; ANSYS; Reynolds-Averaged Navier-Stokes Equations; Kongsberg Maritime Sweden AB;

   Sammanfattning : Ocean noise pollution is an invisible but growing threat. There are many sources of sound in the ocean but human underwater radiated noise, in particular from shipping is one of the most prominent one. Ocean noise pollution can interfere or sometimes even directly harm marine life. LÄS MER

4. 3. Numerical Study on Hydrodynamic Characteristics of Flood Discharge Tunnel in Zipingpu Water Conservancy Project : Using RANS equations and the VOF model

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

   Författare :Micaela Hamberg; Signe Dahlin; [2019]
   Nyckelord :VOF; RANS; Navier-Stokes; Spillway; Discharge tunnel; ANSYS; Fluent; CFD; Grid convergence index; Design of spillway; Cavitation; Gambit; k-epsilon; Ansys Gambit;

   Sammanfattning : To avoid the large amount of damage that floods can cause, spillway tunnels are used to control water levels. To ensure the safety of water transportation through spillway tunnels, the behaviour of the water throughout the tunnel is important to know. LÄS MER

5. 4. Simulation of Colorless Distributed Combustion

   Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

   Författare :Hampus Olsson; [2019]
   Nyckelord :Computational Fluid Dynamics; Combustion; Gas Turbine; Emission reduction; Flameless Combustion; Colorless Distributed Combustion; Technology and Engineering;

   Sammanfattning : Colorless distributed combustion (CDC) is a promising novel technology to reduce emissions of carbon monoxide and nitrogen oxides in gas turbine combustors. CDC features a different flame regime than conventional gas turbine combustors, associated with a distributed reaction zone and low and uniform temperatures due to dilution of combustion air with exhaust gases. LÄS MER

7. 5. Investigation of performance and surge behavior of centrifugal compressors through CFD simulations

   Master-uppsats, KTH/Mekanik

   Författare :Francesco Tosto; [2018]
   Nyckelord :centrifugal compressor; Computational Fluid Dynamics CFD ; RANS; surge; compressible uid dynamics; Design of Experiments DoE .; centrifugalkompressor; CFD-simulering; RANS; overskott; komprimerbar vatskedynamik; Design of Experiments DoE ;

   Sammanfattning : The use of turbocharged Diesel engines is nowadays a widespread practice in the automotive sector: heavy-duty vehicles like trucks or buses, in particular, are often equipped with turbocharged engines. An accurate study of the flow field developing inside both the main components of a turbocharger, i.e. LÄS MER