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RISTransport of Particulates in an Internal Cooling Ribbed Duct
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A ribbed square duct (P∕e=10, e∕Dh=0.10) subjected to sand ingestion is studied using large-eddy simulations (LES). Particle sizes of 10μm, 50μm, and 100μm with nondimensional response times ...
Large Eddy Simulation of Leading Edge Film Cooling—Part II: Heat Transfer and Effect of Blowing Ratio
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Detailed investigation of film cooling for a cylindrical leading edge is carried out using large eddy simulation (LES). The paper focuses on the effects of coolant to mainstream blowing ratio ...
Large Eddy Simulation Investigation of Flow and Heat Transfer in a Channel With Dimples and Protrusions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Large eddy simulation calculations are conducted for flow in a channel with dimples and protrusions on opposite walls with both surfaces heated at three Reynolds numbers, ReH=220, 940, and 9300, ...
Investigation of Coriolis Forces Effect of Flow Structure and Heat Transfer Distribution in a Rotating Dimpled Channel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Large-eddy simulations are used to investigate Coriolis forces effect on flow structure and heat transfer in a rotating dimpled channel. Two geometries with two dimple depths are considered, ...
Large Eddy Simulation of Flow and Heat Transfer in the 180‐Deg Bend Region of a Stationary Gas Turbine Blade Ribbed Internal Cooling Duct
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Large eddy simulation of the 180 deg bend in a stationary ribbed duct is presented. The domain studied includes three ribs upstream of the bend region and three ribs downstream of the bend ...
Large Eddy Simulation of Flow and Heat Transfer in the Developing Flow Region of a Rotating Gas Turbine Blade Internal Cooling Duct With Coriolis and Buoyancy Forces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The problem of accurately predicting the flow and heat transfer in the ribbed internal cooling duct of a rotating gas turbine blade is addressed with the use of large eddy simulations (LES). ...
Investigation of the Effects of Dynamic Change in Curvature and Torsion on Pulsatile Flow in a Helical Tube
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cardiovascular diseases are the number one cause of death in the world, making the understanding of hemodynamics and the development of treatment options imperative. The effect of motion of the ...
Large Eddy Simulation of Flow and Heat Transfer in a 90 deg Ribbed Duct With Rotation: Effect of Coriolis and Centrifugal Buoyancy Forces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Results from large eddy simulations (LES) of fully developed flow in a 90 deg ribbed duct are presented with rib pitch-to-height ratio P/e=10 and a rib height-to-hydraulic-diameter ratio e/Dh=0.1. ...
A Comparative Study of DES and URANS for Flow Prediction in a Two-Pass Internal Cooling Duct
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The capabilities of the detached eddy simulation (DES) and the unsteady Reynolds averaged Navier-Stokes (URANS) versions of the 1988 k-ω model in predicting the turbulent flow field in a two-pass ...
A Mean-Field Pressure Formulation for Liquid-Vapor Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A nonlocal pressure equation is derived from mean-field free energy theory for calculating liquid-vapor systems. The proposed equation is validated analytically by showing that it reduces to van ...