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RISEddy Resolving Strategies in Turbomachinery and Peripheral Components
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The successful application of eddy resolving simulations to most areas of a modern gas turbine aeroengine is considered. A coherent modeling framework is presented to address coupling challenges. A flow classification is ...
Impact of Cooling Injection on the Transonic Over Tip Leakage Flow and Squealer Aerothermal Design Optimization
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present work, the effect of coolant injection on the overtipleakage (OTL) flow and squealer designs has been investigated in a transonic flow regime. After an experimental verification of the computational tool ...
Cooling Injection Effect on a Transonic Squealer Tip—Part II: Analysis of Aerothermal Interaction Physics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A basic attribute for turbine blade film cooling is that coolant injected should be largely passively convected by the local base flow. However, the effective working of the conventional wisdom may be compromised when the ...
Cooling Injection Effect on a Transonic Squealer Tip—Part I: Experimental Heat Transfer Results and CFD Validation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recent studies have demonstrated that the aerothermal characteristics of turbine rotor blade tip under a transonic condition are qualitatively different from those under a low-speed subsonic condition. The cooling injection ...
Observations of the Pacific North Equatorial Current Bifurcation at the Philippine Coast
Publisher: American Meteorological Society
Abstract: Hydrographic surveys were conducted off the Philippine coast in September 1987 and April 1988 as part of the United States/People's Republic of China cooperative research program. These cruises sampled the western Pacific ...
Prediction of Surface Wear of Involute Gears Based on a Modified Fractal Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new wear prediction method of tooth surfaces of involute gears based on a real tooth surface model and a modified fractal method is developed. The real tooth surface model of an involute gear pair is introduced, and ...
Thermomechanical Analysis of Pressure Vessels With Functionally Graded Material Coating
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Pressure vessels covered with overlaying layer or coating are widely applied due to its strong heat resistance, corrosion resistance, and loadcarrying capacity. However, limited work has been reported on investigating the ...
Localized Artificial Viscosity Stabilization of Discontinuous Galerkin Methods for Nonhydrostatic Mesoscale Atmospheric Modeling
Publisher: American Meteorological Society
Abstract: ibbs oscillation can show up near flow regions with strong temperature gradients in the numerical simulation of nonhydrostatic mesoscale atmospheric flows when using the high-order discontinuous Galerkin (DG) method. The ...
Thermal Performance Study of a Water Tank for a Solar System With a Fresnel Lens
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The heat transfer characteristics of a rectangular water tank used in a solar water heating system with a Fresnel Len were investigated qualitatively and quantitatively through the theoretical and numerical methods. The ...
Using MODIS BRDF and Albedo Data to Evaluate Global Model Land Surface Albedo
Publisher: American Meteorological Society
Abstract: The land surface albedo in the NCAR Community Climate System Model (CCSM2) is calculated based on a two-stream approximation, which does not include the effect of three-dimensional vegetation structure on radiative transfer. ...