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RISComputational Fluid Dynamics Computations Using a Preconditioned Krylov Solver on Graphical Processing Units
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Graphical processing unit (GPU) computation in recent years has seen extensive growth due to advancement in both hardware and software stack. This has led to increase in the use of GPUs as accelerators across a broad ...
Large 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 ...
Large Eddy Simulation With Zonal Near Wall Treatment of Flow and Heat Transfer in a Ribbed Duct for the Internal Cooling of Turbine Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Large eddy simulations of flow and heat transfer in a square ribbed duct with rib height to hydraulic diameter of 0.1 and 0.05 and rib pitch to rib height ratio of 10 and 20 are carried out with the near wall region being ...
Size- and Temperature-Dependent Collision and Deposition Model for Micron-Sized Sand Particles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Sand ingestion and deposition in gas turbine engine components can lead to several operational hazards. This paper discusses a physics-based model for modeling the impact, deposition, and sticking of sand particles to ...
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 ...
Effect of Blowing Ratio on Early Stage Deposition of Syngas Ash on a Film Cooled Vane Leading Edge Using Large Eddy Simulations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A numerical study is performed to investigate the deposition of Syngas ash in the leading edge region of a turbine vane. The leading edge of the vane is modeled as a symmetric semicylinder with a flat afterbody. Three rows ...
Effects of Elastic Modulus Change in Helical Tubes Under the Influence of Dynamic Changes in Curvature and Torsion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The incidence of stent late restenosis is high (Zwart et al., 2010, “Coronary Stent Thrombosis in the Current Era: Challenges and Opportunities for Treatment,†Curr. Treat. Options Cardiovasc. Med., 12(1), pp. 46–57) ...
Effect of Pin Tip Dual Clearance on Flow and Heat Transfer at Low Reynolds Numbers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper examines the augmentation of heat and mass transfer due to dual clearances on cylindrical pin fins, relative to a channel between parallel plates, in mini/microchannel reactors at low Reynolds numbers. In this ...
Fully Coupled Large Eddy Simulation-Conjugate Heat Transfer Analysis of a Ribbed Cooling Passage Using the Immersed Boundary Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The study focuses on evaluating fully coupled conjugate heat transfer (CHT) simulation in a ribbed cooling passage with a fully developed flow assumption using large eddy simulation (LES) with the immersed boundary method ...