ATAS
Harshit Gupta - 30/12/2010
CFD of biomedical flows.
This project concerns the computer simulation of biomedical flows such as intracranial aneurysms. The digital images from computed tomography (CT) will be used to build a computer model. 2D surface mesh and 3D volume mesh techniques will be employed to generate a computational mesh for CFD. Novel methods for efficient mesh generation will be implememted in this study. Boundary conditions will be provided using information available from patient specific clinical measurement data. An extensive grid independence study will be performed to establish the simulation conditions for this kind of geometry. CFD will be used to detect clinically relevant changes after treatment.
Siwei Dong - 30/12/2010
CFD of unsteady turbulent flows.
This project concerns CFD of unsteady turbulent flows. First, novel numerical methods for complex geometry modelling will be implemented and the accuracy will be ascertained with a series of test simulations. Numerical simulations of unsteady turbulent flow will be performed using DNS and LES techniques. The results will then be analysed to understand the response of turbulent flow to unsteady external forcing. In particular, the effects of flow acceleration and deceleration on the turbulent structures will be studied. The findings from this study will be relevant to many engineering and biomechanical applications.
Serdar Yildirim
Unsteady turbulent flows subject to temporal acceleration and deceleration will be studied using computer simulations. This type of flow is extremely difficult to study experimentally due to severe difficulties in unsteady measurement. In this study, DNS/LES numerical techniques will be employed to model the unsteady response of the turbulent flow. The main objectives of the study are to investigate the effect of temporal acceleration and deceleration on turbulence structures. The temporal relaxation time for the turbulent flow will be examined. The effect on the near-wall anisotropy will be also investigated.
Mohammad Soleimani
Unsteady flows in human lungs will be studied using computer simulations. The computer images from computed tomography (CT) will be used to build a computer model. 2D surface mesh and 3D volume mesh techniques will be employed to generate a computational mesh for CFD. Boundary conditions will be provided using information available from magnetic resonance imaging (MRI), and other clinical measurement data. An extensive grid independence study will be performed to establish the simulation conditions for this kind of geometry. The effects of the boundary conditions will be also investigated. CFD will be used to detect clinically relevant changes in airway resistance after treatment.