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RISLarge Eddy Simulation for Turbulent Heat Transfer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper gives an overview of different components of conducting largeeddy simulations (LES) for convective heat transfer in practical applications. Subgrid stress models, wall models, and the generation of inlet turbulent ...
Transport 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 ...
Flows Through Reconstructed Porous Media Using Immersed Boundary Methods
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Understanding flow through real porous media is of considerable importance given their significance in a wide range of applications. Direct numerical simulations of such flows are very useful in their fundamental understanding. ...
Prediction of Sand Transport and Deposition in a Two Pass Internal Cooling Duct
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Sand transport and deposition is investigated in a twopass internal cooling ribbed geometry at near engine conditions. Largeeddy simulation (LES) calculations are performed for bulk Reynolds number of 25,000 to calculate ...
Particle Scale Investigation of Influencing Factors on Heat Transfer in Nonspherical Particle–Fluid System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heat transfer characteristics of random suspensions of 0.25 aspect ratio (AR) cylinders are investigated for Reynolds numbers (Re) between 10 and 300 and solid fraction (φ) ranging from 0.1 to 0.3 using particle resolved ...
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). ...