[en] Unsteady high-resolution RANS using a Reynolds stress model have showed good agreement with experimental results for flow in a channel containing a rod. The numerical study clearly reproduced the formation of coherent structures and demonstrated that they are largely responsible for transport across gap regions. It is assessed that this approach can be used in parametric studies of flow and heat transfer in nuclear reactor rod bundles. (author)

[en] Computational biomechanics is a fast-growing field that integrates modern biological techniques and computer modelling to solve problems of medical and biological interest. Modelling of blood flow in the large arteries is the best-known application of computational biomechanics, but there are many others. Described here is work being carried out in the laboratory on the modelling of blood flow in the coronary arteries and on the transport of viral particles in the eye. (author)

[en] We propose in this paper a method that permits designing a suitable initial grid for the solution of inviscid and viscous flows, including smooth and discontinuous ones. To design grids suitable for boundary layers and wakes, an acoustic-inspired approach is proposed. In order to capture discontinuities, a fast numerical scheme to solve Euler equations is formulated. Finally, the efficiency of the method is demonstrated through numerical tests. (author)

[en] In this paper, a scheme based on normalized flux has been developed into an implicit finite volume procedure, which uses pressure as a working variable. The boundedness criteria determined from NVD schemes based on normalized flux. This numerical process is used for solution of Euler equations on a nonorthogonal mesh with collocated finite volume formulation. The method is applied to the computation of steady subsonic, transonic and supersonic flows over a bump-in-channel geometry. The results of the SBIC scheme based on the normalized flux and normalized primitive variable are compared with other computations published in literature. (author)

[en] The Numerical Wind Tunnel is a three dimensional CFD code that uses an anisotropic Cartesian grid and grid adaptation, so that cells are concentrated around the flow features. This contribution describes the methodology adopted for the parallelization of the code and presents results of some initial simulations. (author)

[en] The Twelfth Annual Conference of the CFD Society of Canada, CFD 2004, was held in Ottawa, Ontario from May 9-11, 2004. The proceedings consists of 24 sessions covering the following topics: fluid structure interactions; multiphase and multi-species flows; mesh methods; turbulence; DNS/LES; supersonic and hypersonic flows; heat transfer; combustion and detonation; flow physics; aerodynamics; applications; algorithms; environmental flows; magnetohydrodynamics and electrohydrodynamics; biofluids; and, combustion and smoke management

[en] The present work deals with numerical investigation of a new class of bluff-body flows created in a steady uniform flow by combining streamwise (in-line) and rotational oscillation of a circular cylinder. The governing equations based on stream function-vorticity formulation are solved numerically to determine the characteristics of the flow in the near-wake region. Results are presented for five set of the four dimensionless groups which characterize these flows, for which it is found that overall characteristics of the vortex shedding from the cylinder oscillating in the streamwise direction are altered significantly by the addition of rotational oscillation. (author)

[en] A general purpose fluid-structure interaction (FSI) methodology is currently under development with the capability of simulating several problems of interest, from aeroelasticity problems to sub-sea propulsion using shape deformation. This paper will describe a modular FSI code and present results for a few test cases that were used to validate the code. (author)

[en] In this paper a new methodology is introduced to simulate flows around complex geometries by using overset unstructured grids. The proposed algorithm can also be used for the unsteady flows about objects in relative motions. In such a case since the elements are not deformed during the computation the costly part of conventional methods, re-meshing, is prevented. This method relies on the inter-grid boundary definition to establish communications among independent grids in the overset system. At the end, the Euler set of equations are integrated on several overset systems to examine the capabilities of this methodology. (author)

[en] An experimental and numerical study of the flow characteristics in an annular UV reactor, as used for drinking water disinfection or Advanced Oxidation Processes, was carried out using Particle Image Velocimetry (PIV) and Computational Fluid Dynamics (CFD). The influence of different turbulence models and mesh structures on the CFD results was investigated. By qualitative and quantitative comparison of CFD and PIV experimental data, it was shown that the Realizable k-e- turbulence model is best suited for simulating the hydrodynamics of this geometry. (author)