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RISSimple Stochastic Model for Particle Dispersion Including Inertia, Trajectory-Crossing, and Continuity Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An eddy-lifetime, stochastic Lagrangian model for particle dispersion in weakly laden turbulent flows is proposed, in which the interaction time-scale between particles and turbulent eddies is ...
Quantitative Visualization of the Flow in a Centrifugal Pump With Diffuser Vanes—II: Addressing Passage-Averaged and Large-Eddy Simulation Modeling Issues in Turbomachinery Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present paper addresses two basic modeling problems of the flow in turbomachines. For simulation of flows within multistage turbomachinery, unsteady Reynolds-averaged Navier–Stokes (RANS) of ...
Implication of Mismatch Between Stress and Strain-Rate in Turbulence Subjected to Rapid Straining and Destraining on Dynamic LES Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Planar straining and destraining of turbulence is an idealized form of turbulence-meanflow interaction that is representative of many complex engineering applications. This paper studies experimentally ...
Experimental Investigation of Unsteady Flow Field Within a Two-Stage Axial Turbomachine Using Particle Image Velocimetry
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Detailed measurements of the flow field within the entire 2nd stage of a two-stage axial turbomachine are performed using particle image velocimetry. The experiments are performed in a facility ...
Average Passage Flow Field and Deterministic Stresses in the Tip and Hub Regions of a Multistage Turbomachine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper continues our effort to study the dynamics of deterministic stresses in a multistage turbomachine using experimental data. Here we focus on the tip and hub regions and compare them ...