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RISZonal Hybrid RANS-LES Simulation of a 1.5-Stage Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. This article introduces a novel method to conduct zonal hybrid RANS-large eddy simulations (LES) of turbomachinery configurations and demonstrates its application to a 1.5-stage turbine. The method extends the ...
Assessment of Computational Fluid Dynamic Modeling of Multi-Jet Impingement Cooling and Validation With the Experiments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The current study involves numerical and experimental investigations of circular in-line jets impinging on a heated flat plate. The generic configuration is characterized by nine jets, each with a diameter of D = 0.0152 ...
Assessment of the DDES-γ Model for the Simulation of a Highly Loaded Turbine Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The flow over the linear low-pressure turbine cascade MTU-T161 at Re = 90,000 is analyzed using delayed detached eddy simulations (DDES). At this operating point, the low Reynolds number and the high loading of the blade ...
Advanced Methods for Assessing Flow Physics of the TU Darmstadt Compressor Stage: Uncertainty Quantification of RANS Turbulence Modeling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, we quantify the turbulence modeling uncertainty for the transonic Technische Universität Darmstadt (TUDa) compressor. The present work applies the Eigenspace Perturbation Framework (EPF) as it is the only ...
The Unsteady Shock–Boundary Layer Interaction in a Compressor Cascade—Part II: High-Fidelity Simulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the second part of this three-paper series, high-fidelity simulations of the transonic cascade TEAMAero at the aerodynamic design point with Rein=1.35×106 and Main=1.21 are presented. A high-order discontinuous Galerkin ...
A Numerical Test Rig for Turbomachinery Flows Based on Large Eddy Simulations With a High-Order Discontinuous Galerkin Scheme—Part II: Shock Capturing and Transonic Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the second paper of this three-part series, we focus on the simulation of transonic test cases for turbomachinery applications using a high-order discontinuous Galerkin spectral element method (DGSEM). High-fidelity ...
A Numerical Test Rig for Turbomachinery Flows Based on Large Eddy Simulations With a High-Order Discontinuous Galerkin Scheme—Part III: Secondary Flow Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this final paper of a three-part series, we apply the numerical test rig based on a high-order discontinuous Galerkin scheme to the MTU T161 low-pressure turbine with diverging end walls at off-design Reynolds number ...
A Numerical Test Rig for Turbomachinery Flows Based on Large Eddy Simulations With a High-Order Discontinuous Galerkin Scheme—Part I: Sliding Interfaces and Unsteady Row Interactions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this first paper of a three-part series, we present the extension and validation of the high-order discontinuous Galerkin scheme in DLR’s CFD-solver trace for scale-resolving simulations of unsteady row interactions. ...
Reynolds Number Effect on Transitional Delayed Detached-Eddy Simulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. The accurate prediction of a wide range of operating conditions is desired by numerical methods. In particular, off-design conditions are a major challenge for steady Reynolds-averaged Navier–Stokes (RANS) methods. ...
Statistical Error Estimation Methods for Engineering-Relevant Quantities From Scale-Resolving Simulations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Scale-resolving simulations, such as large eddy simulations, have become affordable tools to investigate the flow in turbomachinery components. The resulting time-resolved flow field is typically analyzed using first- and ...