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RISQuick Method for Estimating Flood Discharge Reduction from Dense Water-Blocking Structures
Publisher: American Society of Civil Engineers
Abstract: AbstractAnalyzing the impact of multiple water-blocking structures, such as bridge piers and
wharf piles, on flood discharge is challenging due to difficulties in simulating large-scale
scenarios and a lack of empirical ...
Numerical Evaluation of Novel Shaped Holes for Enhancing Film Cooling Performance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The overall film cooling performance of three novel film cooling holes has been numerically investigated in this paper, including adiabatic film cooling effectiveness, heat transfer coefficients as well as discharge ...
Evaluation of Particulate Deposition Effects on Film Cooling Using Conjugate Heat Transfer Methods: An Experimental and Numerical Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A significant challenge of offering adequate film cooling for gas turbine hot components in practical operation is deposition induced by impurities from the intake air and fuel, which influences the overall cooling performance ...
Conjugate Heat Transfer Validation of an Optimized Film Cooling Configuration for a Turbine Vane Endwall
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, to improve overall cooling performance for the endwall of a turbine nozzle guide vane that incorporated internal jet impingement and external purge flow and discrete injection cooling, the external film ...
Influences of Particulate Deposition on Vane Trailing-Edge Film Cooling: Adiabatic and Overall Cooling Effectiveness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Thermal design for the trailing edge of a turbine vane is critically challenging because the thinnest trailing-edge region has a low-thermal capacity, resulting in a much quicker thermal response to the hot gas. Cooling ...
An Active Phantom Cooling Concept for Turbine Endwall Cooling From Pressure-Surface Film Coolant Injection
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cooling of the endwall of a nozzle guide vane should receive special attention due to its uniqueness of near-wall complex secondary flows and concomitant challenge of offering film-coverage for cooling the endwall pressure-side ...
Film Cooling on Turbine Vane Endwalls With Different Inlet Cooling Configurations: Experimental and Computational Results
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A comparative study of turbine endwall film cooling resulting from three different cooling configurations in front of the passage inlet was conducted. The three inlet cooling configurations considered in this study were a ...
Investigation and Application of Bio-Inspired Microscale Structures to Turbine Endwall for Enhancing Film Cooling Performance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, inspired by micro-scale surface structure patterns of birds’ flight feather, a novel thermal-protection enhancement technique is proposed for a turbine endwall with cavity air leaked from an upstream realistic ...
An Improved Mesh-Conversion Methodology for Particulate Deposition Simulations in Gas Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. Dynamic deposition of fine particulate matter inside gas turbine engines leads to changes in geometrical morphology and degradation of aero-thermal performance. Due to physical and optical limitations in existing ...
Endwall Film Cooling Performance for a First-Stage Guide Vane With Upstream Combustor Walls and Inlet Injection
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Effects of an upstream combustor wall on turbine nozzle endwall film cooling performance are numerically examined in a linear cascade in this paper. Film cooling is by two rows of cooling holes at 20% of the axial chord ...