Search for dissertations about: "Suad Jakirlic"

Found 2 swedish dissertations containing the words Suad Jakirlic.

2. 1. Turbulence and scalar flux modelling applied to separated flows

   Author : Johan Gullman-Strand; Arne V. Johansson; Suad Jakirlic; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Space and plasma physics; fluid physics; plasma physics; applied mechanics; aerospace; Rymd- och plasmafysik; Space physics; Rymdfysik;

   Abstract : The turbulen flow in an asymmetric diffuser has been en studied by the means of Reynold average Navier-Stokes equations with both differential and explict algebraic expressions to model the Reynolds stress tensor. Modifications to the differential stress model have been derived, using the inverse turbulence timescale to obtain the dissipation of turbuence kinetic energy. READ MORE

4. 2. Spectral-element simulations of turbulent wall-bounded flows including transition and separation

   Author : Johan Malm; Dan Henningson; Philipp Schlatter; Suad Jakirlic; KTH; []
   Keywords : spectral-element method; direct numerical simulation DNS ; large-eddy simulation LES ; turbulence; transition; over-integration; three-dimensional separation; massively parallel simulations; proper orthogonal decomposition POD ; Koopman modes; vorticity stretching; coherence; SRA - E-vetenskap SeRC ; SRA - E-Science SeRC ;

   Abstract : The spectral-element method (SEM) is used to study wall-bounded turbulent flowsin moderately complex geometries. The first part of the thesis is devoted to simulations of canonical flow cases, such as temporal K-type transitionand turbulent channel flow, to investigate general resolution requirements and computational efficiency of the numerical code nek5000. READ MORE