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RISAn Analytical Model of Four Point Contact Rolling Element Ball Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The purpose of this work is to establish an analytical model and standard way to predict the performance characteristics of a fourpoint contact, or gothic arch type, rolling element ball bearing. Classical rolling element ...
Predicting the Snow-to-Liquid Ratio of Surface Precipitation Using a Bulk Microphysics Scheme
Publisher: American Meteorological Society
Abstract: ulk microphysics parameterizations play an increasingly important role for quantitative precipitation forecasting (QPF) in operational numerical weather prediction (NWP). For wintertime, numerical prediction of snowfall ...
Regimes of Convective Self-Aggregation in Convection-Permitting Beta-Plane Simulations
Publisher: American Meteorological Society
Adiabatic Effectiveness and Thermal Field Measurements of a Shaped Hole in the Showerhead of a Model Turbine Blade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Few published studies incorporating shaped hole designs in the leading-edge region, or showerhead, of turbine airfoils have been performed; but among them is the indication that shaped holes may offer an improvement in ...
Effects on Film Cooling Performance in the Showerhead From Geometric Parameterization of Shaped Hole Designs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The high heat loads at the leading-edge regions of turbine vanes and blades necessitate the most robust thermal protection, typically accomplished via a dense array of film cooling holes, nicknamed the “showerhead.” Although ...
Characterizing Stormwater Basin Conditions Using Tracked BMP Inspection and Rating Reports from the Virginia Department of Transportation
Publisher: American Society of Civil Engineers
Abstract: Studies have rarely used stormwater best management practice (BMP) condition rating data to quantify changes in condition ratings and characterize condition issues, making it challenging to implement proactive maintenance ...
Cavitation Phenomena and Performance Implications in Archimedes Flow Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cavitation produces undesirable effects within turbines, such as noise, decreases in efficiency, and structural degradation of the device. Two microhydro turbines incorporating Archimedean spiral blade geometries were ...
Flame Structure Effects at High G Loading
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Previous research has been conducted showing significant benefits on combustion efficiency and stability by creating high gravityloaded combustion environments. Ultracompact combustor systems decrease the size and weight ...
Surface Curvature Effects on Film Cooling Performance for Shaped Holes on a Model Turbine Blade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Surface curvature has been shown to have significant effects on the film cooling performance of round holes, but the literature include few studies of its effects on shaped holes despite their prevalence in gas turbines. ...
Experimental and Computational Investigation of Film Cooling Performance and External Flowfield Effects Due to Impingement Coolant Feed in the Leading Edge of a Turbine Blade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effects that leading-edge impingement coolant feeds have on the external flowfield and on film cooling performance in the showerhead have not been studied thoroughly in the literature. To isolate the influence of the ...