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RISA Sector-Cascade Test Rig for Measurements of Heat Transfer in Turbine Center Frames
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The turbine center frame (TCF) is an inherent component of turbofan aircraft engines and is used for connecting the high-pressure turbine (HPT) to the low-pressure turbine (LPT). Its position immediately downstream of the ...
Vane–Probe Interactions in Transonic Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this article, a numerical investigation of the effect of a miniaturized five-hole probe downstream of a transonic low-pressure turbine vane row is presented. First, a numerical calibration of the probe was performed in ...
The Influence of Combustor Hot Streaks on the Aerodynamic Performance of a Turbine Center Frame
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the influence of combustor temperature non-uniformities on modern engine turbine center frames (TCFs). Due to their position in an engine, coupled with the trends of more aggressive designs, increased ...
Heat Transfer Measurements in a Turbine Center Frame at Realistic Mach Number—Part I: Baseline Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. This paper investigates heat transfer in a turbine center frame (TCF), a transition duct that guides the flow from the high-pressure to the low-pressure turbine. Experimental results were acquired in a high-speed ...
The Influence of Purge Flow Parameters on Heat Transfer and Film Cooling in Turbine Center Frames
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The imperative improvement in the efficiency of turbofan engines is commonly facilitated by increasing the turbine inlet temperature (TIT). This development has reached a point where also components downstream of the ...
Experimental and Numerical Comparison of Two Turbine Vane Frame Designs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an experimental study supported by numerical simulations of the performance of two turbine vane frames (TVFs) at various purge and TVF inlet swirl conditions representing both on- and off-design operations. ...
Heat Transfer Measurements in a Turbine Center Frame at Realistic Mach Number—Part II: Influence of Combustor Hot Streaks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. This article investigates heat transfer in a turbine center frame (TCF), focusing on the effects of combustor temperature non-uniformities, more commonly referred to as hot streaks (HSs). It is a continuation of ...
Measurements and Modeling of Ingress in a New 1.5-Stage Turbine Research Facility
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In gas turbines, hot mainstream flow can be ingested into the wheel-space formed between stator and rotor disks as a result of the circumferential pressure asymmetry in the annulus; this ingress can significantly affect ...
Influence of Leakage Flows on Hot Gas Ingress
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: One of the most important problems facing gas turbine designers today is the ingestion of hot mainstream gases into the wheel-space between the turbine disk (rotor) and its adjacent casing (stator). A rim seal is fitted ...
Re-Ingestion of Upstream Egress in a 1.5-Stage Gas Turbine Rig
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In gas turbines, rim seals are fitted at the periphery of stator and rotor discs to minimize the purge flow required to seal the wheel-space between the discs. Ingestion (or ingress) of hot mainstream gases through rim ...