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RISComputational Fluid Dynamics Evaluations of Unconventional Film Cooling Scaling Parameters on a Simulated Turbine Blade Leading Edge
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: While it is well understood that certain nondimensional parameters, such as freestream Reynolds number and turbulence intensity, must be matched for proper design of film cooling experiments; uncertainty continues on the ...
Analysis of Flow Migration in an Ultra Compact Combustor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The ultracompact combustor (UCC) has the potential to offer improved thrusttoweight and overall efficiency in a turbojet engine. The thrusttoweight improvement is due to a reduction in engine weight by shortening the ...
Achieving a Specific Nonuniform Heat Flux With an Electrical Heat Flux Plate
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A voltage applied across a uniform plate results in a uniform ohmic heat dissipation, useful for conducting heat transfer experiments or preventing unacceptably low temperatures on spacecraft components. Most experiments ...
A New Spin on Small-Scale Combustor Geometry
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The ultra-compact combustor (UCC) is an innovative combustor system alternative to traditional turbine engine combustors with the potential for engine efficiency improvements with a reduced volume. Historically, the UCC ...
The Effect of Scale and Working Fluid on Sweeping Jet Frequency and Oscillation Angle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study was conducted to quantify in a controlled manner the effect of oscillator scale and working fluid on oscillator performance. The performance parameters of interest include the oscillation frequency and oscillation ...
Computational and Experimental Analysis of a Compact Combustor Integrated Into a JetCat P90 RXi
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Ultra compact combustors (UCCs) look to reduce the overall combustor length and weight in modern gas turbine engines. Previously, a UCC achieved self-sustained operation at subidle speeds in a JetCat P90 RXi turbine engine ...
Experimental Investigation of a Radial Wave Engine Utilizing a Rotary Valved Pressure Gain Combustor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, a deflagrative pressure gain combustor employing rotary valves is introduced that can reduce combustor length by allowing the combustion process to take place in the radial direction rather than in the axial ...
Experimental Analysis of an Ultra-Compact Combustor Powered Turbine Engine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The innovative ultra-compact combustor (UCC) is an alternative to traditional turbine engine combustors and has been shown to reduce the combustor length and offer potential improvements in combustion efficiency. Prior UCC ...
Swirler Design Parameter Impact on Lean Blowout, Pressure Loss, and Flame Liftoff
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Swirl stabilized combustion is a common technique used in gas turbine engine combustors and is accomplished by introducing swirl into the inlet flow, which enhances mixing and stabilizes the combustion event. Coaxial ...
Scaling of Film Cooling Performance From Ambient to Engine Temperatures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present study employs computational fluid dynamics (CFD) to explore the complexities of scaling film cooling performance measurements from ambient laboratory conditions to high temperature engine conditions. In this ...