Essays about: "turbulent kinetic energy"

Showing result 1 - 5 of 20 essays containing the words turbulent kinetic energy.

1. 1. Computational Fluid Dynamics of the flow in a diffuser : - like geometry

   University essay from KTH/Skolan för teknikvetenskap (SCI)

   Author : Rasmus Johansson Oskarsson; [2023]
   Keywords : Fluid mechanics; Flow simulation; RANS; Flow separation; Diffuser;

   Abstract : Simulations were performed to investigate flow separation of an asymmetricdiffuser - like geometry. The geometry used for the simulations was modeledafter an experimental setup with recorded flow data, which was compared tothe simulated data. For all simulations, steady state flow at the inlet was usedwith the assumption of a 2D flow. READ MORE

3. 2. Rocket Jet Impinging on a Surface

   University essay from KTH/Teknisk mekanik

   Author : Javier Capel Jorquera; [2022]
   Keywords : Rocket jet impinging on a surface; Favre-Averaged Equations; turbulence modeling; numerical considerations; Method of Characteristics; MOC; plate optimization;

   Abstract : With the continuous growth of the space industry and the introduction of reusable rockets, the number of rocket launches is expected to increase significantly in the following years. During rocket launching, the engine exhaust impinges on the launch structure producing a complex flow field. READ MORE

4. 3. Design of compact automotive heat exchanger, analysing the effects of RANS models and utilising Additive Manufacturing

   University essay from KTH/Fysik

   Author : Nikhil Srikkanth; Bartosz Brzuchalski; [2022]
   Keywords : Turbulence; Reynolds Averaged Navier-Stokes; KTH Formula Student; metal additive manufacturing; CFD; turbulent kinetic energy; boundary layer;

   Abstract : The analytical modelling of complex turbulent airflow remains one of the great unsolved mysteries of physics, but in this paper two widely used Reynolds Averaged Navier-Stokes models (k-$\epsilon$ and k-$\omega$ SST) are compared while designing a heat exchanger for the KTH Formula Student electric race car. CAD software was used to design lattices for the heat exchanger core and theorise about how to increase heat transfer while also taking into account the utilisation of metal additive manufacturing. READ MORE

5. 4. Study of a vertical slot fish ladder : Evaluation of flow dynamics through a standardized bypass and the effect of predesigned roughness elements

   University essay from Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

   Author : Iñigo Revilla; Laia Pons; [2020]
   Keywords : Vertical slot fishway; roughness element; pattern; slope; velocity; turbulence; Fluent;

   Abstract : Migrating freshwater fish population has been significantly declined, mostly by the obstruction of their migratory routes by hydropower dams. To diminish such impacts, fish ladders have been developed to facilitate the passage of migrating fish. READ MORE

6. 5. Interscale transport of Reynolds stresses in wall-bounded flows

   University essay from KTH/Skolan för teknikvetenskap (SCI)

   Author : Gioele Ferrante; Andres Morfin; [2019]
   Keywords : Reynolds Stress; Zero-Pressure Gradient Turbulent Boundary Layer; Turbulent Couette Flow; Inverse Interscale Transport; Energy Cascase; Wall-bounded Flows; Direct Numerical Simulation; Large Eddy Simulation.;

   Abstract : Couette, pipe, channel, and zero-pressure gradient (ZPG) turbulent boundary layer (TBL) flows have classically been considered as canonical wall-bounded turbulent flows since their near-wall behavior is generally considered to be universal, i.e. invariant of the flow case and the Reynolds number. READ MORE