Lattice Boltzmann Computations ofGrid-Generated TurbulenceLattice-Boltzmann-Berechnungen vongittergenerierter TurbulenzDer Technischen Fakult¨at derFriedrich-Alexander-Universit¨at Erlangen-Nu¨rnbergzur Erlangung des GradesDOKTOR-INGENIEURvorgelegt von¨Nagihan OzyılmazErlangen 2010AlsDissertationgenehmigtvonderTechnischenFakult¨atderUniversit¨atErlangen-Nu¨rnbergTag der Einreichung: 14.05.2009Tag der Promotion: 12.11.2009Dekan: Prof. Dr.-Ing. Reinhard GermanBerichterstatter: Prof. i.R. Dr. Dr. h. c. Franz DurstProf. Dr.-Ing. Ulrich Ru¨deProf. Dr.-Ing. Gunther Brennerto Atom Ant (!)AcknowledgmentsThe present work was realized during my research stay at the Institute of Fluid Mechanics atthe Friedrich Alexander University of Erlangen. I would like to express my appreciation tothe major contributors.First, I would like to thank my supervisor, Prof. Dr. Dr. hc. Franz Durst, for support-ing and guiding my research work. His commitment to the research will continue to inspireme in the future. I have many other reasons to be thankful to him, but I would like to thankhim, especially for leading me to the area of the physics of turbulence. I am sure the moretime I spend doing research and the more areas of fluid mechanics this research work willcover, the more I will appreciate the time I have spent intensively on the understanding offundamental flows.I would like to thank Prof. Dr. Ru¨de, Prof. Dr. Brenner, Prof. Dr. Brunn and Prof.Dr.