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This thesis is a contribution to research in the field of Large Eddy Simulation (LES) of particle-laden flow with a focus on the effect of unresolved small scale turbulence on suspended particles. The first substantial contribution of this thesis is a detailed quantification of small scale effects in homogeneous isotropic turbulence. The second contribution of this thesis is an analytical and numerical analysis of three commonly used models that describe the effect of subgrid scales on particles: the Approximate Deconvolution Method (ADM) and two stochastic models. The third contribution is a new model that can be regarded as an extension of ADM. The new model consists of a specific interpolation method, which is designed such that statistically the numerical interpolation error can be identified with the effect of the unresolved scales. The new model is computationally inexpensive and in the analysed testcases more accurate than the previously analysed models.

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Geboren am 15.02.1980 in Neu-Ulm, wohnhaft in München. 1999Abitur 1999 am Lessing-Gymnasium Neu-Ulm. Danach Studium derTechnomathematik an der TU München. Abschluss 2005mit Auszeichnung. 2010 Promotion am Fachgebiet Hydromechanik derTU München. Prädikat summa cum laude. Seitdem Mitarbeiter beider Linde AG, München.

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