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RISInvestigation of Film Cooling Using Time-Resolved Stereo Particle Image Velocimetry
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present study, an existing test rig at the Institute of Thermal Turbomachinery (ITS), Karlsruhe Institute of Technology (KIT), designed for generic film cooling studies is adopted to accommodate time-resolved ...
Capacitive Film Thickness Measurements in a Ventless Aero Engine Bearing Chamber—Influence of Operating Conditions and Offtake Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper presents results from film thickness measurements in a bearing chamber test rig. The measurements were performed at different operating conditions and with two offtake designs. A discussion of the measurement ...
Experimental Study on the Friction Contact Between a Labyrinth Seal Fin and a Honeycomb Stator
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents results from an extensive experimental study on the rubbing behavior of labyrinth seal fins (SFs) and a honeycomb liner. The objective of the present work is to improve the understanding of the rub ...
Short Helical Combustor: Flow Control in a Combustion System With Angular Air Supply
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The concept of the novel short helical combustor (SHC) was investigated in our previous work (Ariatabar et al., 2016, “Short Helical Combustor: Concept Study of an Innovative Gas Turbine Combustor With Angular Air Supply,” ...
Experimental Investigation on the Influence of Geometrical Parameters on the Frictional Heat Input and Leakage Performance of Brush Seals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Because of the superior sealing characteristics compared to labyrinth seals, brush seals found an increased spread in turbomachinery in recent years. Their outstanding sealing performance results mainly from their flexibility. ...
Experimental Investigation on the Influence of Geometrical Parameters on the Frictional Heat Input and Leakage Performance of Brush Seals
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Because of the superior sealing characteristics compared to labyrinth seals, brush seals found an increased spread in turbomachinery in recent years. Their outstanding sealing performance results mainly from their flexibility. ...
Experimental Investigation on the Rubbing Process of Labyrinth Seals Considering the Material Combination
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Labyrinth seals are used to prevent and control the mass flowrate between rotating components. Due to thermally and mechanically induced expansions during operation and transient flight maneuvers, a contact, the so-called ...
High-Resolution Measurements of Heat Transfer, Near-Wall Intermittency, and Reynolds-Stresses Along a Flat Plate Boundary Layer Undergoing Bypass Transition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new experimental dataset focusing on the influence of high freestream turbulence and large pressure gradients on boundary layer transition is presented. The experiments are conducted in a new wind tunnel equipped with a ...
The Influence of Deterministic Surface Roughness and Freestream Turbulence on Transitional Boundary Layers: Heat Transfer Distributions and a New Transition Onset Correlation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heat transfer measurements in transitional flat plate boundary layers subjected to surface roughness, strong pressure gradients, and freestream turbulence are presented. The surfaces considered consist of a smooth reference ...
Heat Transfer Coefficient Distribution on Oil Injection Cooled Gears: Experimental Method, Uncertainty, and Results
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To design gearboxes with very high power densities, an effective means of cooling the gears and knowledge of the achievable heat transfer coefficients are necessary. In this paper, a method to measure heat transfer ...