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RISCompressible Direct Numerical Simulation of Low Pressure Turbines—Part II: Effect of Inflow Disturbances
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present paper, direct numerical simulation (DNS) studies of the compressible flow in the T106 linear cascade have been carried out. Various environmental variables, i.e., background turbulence level, frequency of ...
Direct Numerical Simulations of a High Pressure Turbine Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, we establish a benchmark data set of a generic highpressure (HP) turbine vane generated by direct numerical simulation (DNS) to resolve fully the flow. The test conditions for this case are a Reynolds number ...
Compressible Direct Numerical Simulation of Low Pressure Turbines—Part I: Methodology
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Modern low pressure turbines (LPT) feature high pressure ratios and moderate Mach and Reynolds numbers, increasing the possibility of laminar boundarylayer separation on the blades. Upstream disturbances including background ...
Large Eddy Simulation and RANS Analysis of the End-Wall Flow in a Linear Low-Pressure-Turbine Cascade—Part II: Loss Generation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In low-pressure turbines (LPT) at design point, around 60–70% of losses are generated in the blade boundary layers far from end walls, while the remaining 30–40% is controlled by the interaction of the blade profile with ...