Engineering Turbulence Modelling and Experiments - 2

Today understanding turbulence is one of the key issues in tackling flow problems in engineering. Powerful computers and numerical methods are now available for solving flow equations, but the simulation of turbulence effects, which are nearly always important in practice, are still at an early stage of development. Successful simulation of turbulence requires the understanding of the complex physical phenomena involved and suitable models for describing the turbulence momentum, heat and mass transfer. The 89 papers, including 5 invited papers, in this volume present and discuss new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. The high standard of the contributions on the developing and testing of turbulent models attests to the world-wide interest this domain is currently attracting from researchers.

(Abbreviated) Sections: 1. Turbulence Modelling. (invited lecture) Modelling convective heat transfer in complex turbulent flows (B.E. Launder). Modeling the effects of solid-body rotation on turbulent mixing-layers (P.J. Nilsen, H.I. Andersson). Engineering turbulence models for separated flows (U.C. Goldberg). 2. Applications of Turbulence Models. (invited lecture) Turbulence effects in reciprocating engines (A.A. Boretti, P. Nebuloni). Higher order turbulence model predictions for complex 2D and 3D flow fields (F.R. Menter). Prediction of hydrodynamic characteristics of oxidation ditches using the k-&egr; turbulence model (A.I. Stamou). 3. Direct and Large-Eddy Simulations. Direct and large eddy simulation of the flow past a sphere (A.G. Tomboulides et al.). Direct simulation of turbulent channel flow with finite difference schemes on non-staggered grids (T.H. Lê, V. Maupu). 4. Experimental Techniques.(invited lecture) recent developments in hot and cold-wire techniques for measurements in turbulent shear flows near walls (Y. Nagano et al.). Digital image analysis of two impinging circular jets (N. Toy, B. Shoe). 5. Experimental Studies. LDV measurements of turbulence characteristics in a two-phase coaxial jet (B.J. Rho et al.). Turbulence measurements in the physical model of a molten aluminium tundish using laser doppler velocimetry (F. Shen et al.). 6. Transition. Further progress in the turbulence modelling of by-pass transition (M. Savill). Structure of a turbulence wedge developed from a single roughness element on a flat plate (M. Ichimiya et al.). 7. Turbulence Control. Experimental measurements of phase difference and coupling level in an excited free shear layer (M.R. Haji et al.). The development of the wake of a thin ribbon in straight and curved uniformly sheared flows (B. Chebbi, S. Tavoularis). 8. Aerodynamic Flows. (invited lecture) Current turbulence modelling in aircraft design (E.H. Hirschel et al.). Evolution of heat flux with mass flow rate in a subscale setup for the Ariane 5 solid rocket booster (F. Nicoud et al.). 9. Turbomachinery Flows. Numerical prediction of the turbulent flow in rotor-stator systems (L. Elena, R. Schiestel). Turbulent flows inside rotating curved channels for different aspect ratios (K. Kikuyama et al.). 10. Combustion Systems. Simultaneous multi-species imging in turbulent flames (S.H. Starner et al.). Development of turbulent boundary layer with large density gradients (M. Favre-Marinet et al.). 11. Two-Phase Flows. (invited lecture: Modeling turbulence in multiphase flows (C.T. Crowe). Measurements and predictions in vertical, two-phase sudden expansion flows (M. Founti, A. Klipfel). Author index.