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By W. Rodi and M. Mulas (Auth.)

ISBN-10: 0080445446

ISBN-13: 9780080445441

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Additional info for Engineering Turbulence Modelling and Experiments 6. Procedings of the ERCOFTAC International Symposium on Engineering Turbulence Modelling and Measurements - ETMM6 -Sardinia, Italy, 23–25 May, 2005

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A Correlation based Transition Model using Local Variables Part 2 - Test Cases and Industrial Applications. ASME-GT2004-53454, ASME TURBO EXPO 2004, Vienna, Austria. , (2005). Transition Modeling for General CFD Applications in Aeronautics, AIAA Paper 2005-522, Reno, Nevada. A. (2002). Prediction of Transition for Attached and Separated Shear Layers in Turbomachinery", AIAA-2002-3643, 38 th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. A. and Li, N. (2004). Modelling Bypass Transition with Low-ReynoldsNumber Nonlinear Eddy-Viscosity Closure, Flow, Turbulence and Combustion, Kluwer Academic Publishers.

The bubble column and the stirred tank are, essentially, "mixing devices"; however, in numerous industrial processes one wants to separate the different phases. In gas-solid flows a common device is the cyclone separator. A typical design is shown schematically in Figure 4. Essentially, it consists of a conic tube, where the particle-laden gas is fed radially. Due to the centrifugal force, the particles are thrown to the wall and fall to the bottom part, where they are collected in a bin, 53 Figure 3: Schematic representation and snapshot of the LES simulation of a stirred tank filled with water and loaded with small glass beads (Derksen, 2003b); center: cross-section midway between two baffles; right: cross-section just below the impeller disk whereas the clean gas leaves the separator at the top.

This naturally requires a compact representation of the simulations. The cases are described in more detail in Menter et al. (2004), Langtry et al. (2004) and Langtry & Menter (2005), including grid refinement and sensitivity studies. Flat Plate Testcases Testcases presented are the ERCOFI'AC T3 series of flat plate experiments and the Schubauer and Klebanof flat plate experiment, all of which are commonly used as benchmarks for transition models. The three cases (T3A-, T3A, and T3B) have zero pressure gradients with different freestream turbulence levels corresponding to transition in the bypass regime.

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Engineering Turbulence Modelling and Experiments 6. Procedings of the ERCOFTAC International Symposium on Engineering Turbulence Modelling and Measurements - ETMM6 -Sardinia, Italy, 23–25 May, 2005 by W. Rodi and M. Mulas (Auth.)


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