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This work aims at developing a strategy how the energy which has to be applied to transport incompressible and Newtonian fluids through straight ducts can be reduced. Based on the physical properties of laminar and turbulent flow, models are derived which theoretically lead to the reduction of the dissipated energy. The possibility to implement the proposed state due to appropriate design aspects in the cross section shape of the duct is investigated based on numerical simulations of the flow

Strömungskontrolle --- direkte numerische Simulation --- direct numerical simulation --- turbulente Strömungflow control --- turbulent flow --- drag reduction --- Reibungsreduktion

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This work aims at developing a strategy how the energy which has to be applied to transport incompressible and Newtonian fluids through straight ducts can be reduced. Based on the physical properties of laminar and turbulent flow, models are derived which theoretically lead to the reduction of the dissipated energy. The possibility to implement the proposed state due to appropriate design aspects in the cross section shape of the duct is investigated based on numerical simulations of the flow

Strömungskontrolle --- direkte numerische Simulation --- direct numerical simulation --- turbulente Strömungflow control --- turbulent flow --- drag reduction --- Reibungsreduktion --- Strömungskontrolle --- direkte numerische Simulation --- direct numerical simulation --- turbulente Strömungflow control --- turbulent flow --- drag reduction --- Reibungsreduktion

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• EndNote
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This book investigates the formation of subaqueous patterns by means of high-fidelity numerical simulations which resolve all the relevant scales of the flow and the sediment bed. This is required to provide a space- and time-resolved information on the flow field and the sediment bed. Secondly, detailed analysis of the generated data allows to address the different governing mechanisms involved in the formation of patterns as well as to access the validity of various existing models.

Geschiebetransport --- HochleistungsrechnenComputational Fluid Dynamics --- High Performance Computing --- Direkte Numerische Simulation --- Turbulente Strömung --- Turbulent Flows --- Numerische Strömungsmechanik --- Sediment Transport --- Direct Numerical Simulation