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RISTurbine Vane Passage Experiments Documenting Evolution of Secondary Flows With Changes in Combustor Coolant Injection Flowrates
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A secondary flow system with a dominant passage vortex pattern has been observed in many gas turbine vane passage studies in which there is no upstream coolant injection or only near-passage endwall coolant injection (no ...
Turbine Vane Passage Cooling Experiments With a Close-Coupled Combustor-Turbine Interface Geometry—Part I: Describing the Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Due to the proximity of the first-stage gas turbine vanes to the combustor, coolant introduced to the combustor walls interacts with the endwall film coolant and changes the vane passage flow physics. Recent results show ...
Nozzle Passage Endwall Effectiveness Values With Various Combustor Coolant Flowrates—Part 1: Flowfield Velocity and Coolant Concentration Measurements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The stators of the first stage of a gas turbine are exposed to severe temperatures. The coolant streams introduced to prevent the stators from thermal damage further complicate the highly three-dimensional vane passage ...
Nozzle Passage Endwall Effectiveness Values With Various Combustor Coolant Flowrates—Part 2: Endwall and Vicinity Surface Effectiveness Measurements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Effective coolant schemes are required for providing cooling to the first-stage stator vanes of gas turbines. To correctly predict coolant performance on the endwall and vane surfaces, these coolant schemes should also ...
Turbine Vane Passage Cooling Experiments With a Close-Coupled Combustor–Turbine Interface Geometry Part II: Describing the Coolant Coverage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The first-stage gas turbine vane surfaces and endwalls require aggressive cooling. This two-part paper introduces a modified design of the combustor–turbine (C–T) interface, the “close-coupled interface,” that is expected ...
Special Issue: Richard J. Goldstein Memorial Issue—Transformative and Innovative Advancements in Heat and Mass TransferA Lifetime of Path-Breaking Scholarship That Spans Gas-Turbine Cooling to Transport Processes and Critical Diagnostic Tools for Convecti
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Professor Richard J. Goldstein (March 27, 1928–March 6, 2023) was perhaps one of the “tallest” colleagues in our field with a career spanning over seven decades, during which he contributed extensively to a gamut of heat ...
Shell-Side Flow Condensation of R410A on Horizontal Tubes at Low-Mass Fluxes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An investigation of refrigerant R410A condensation on a shell and tube heat exchanger simulation is conducted. Tests are on the outside of a horizontal smooth tube, a herringbone tube, and a newly developed three-dimensi ...
Lateral Edge Effects on the Sherwood Number in Turbulent Flow Over a Flat Plate
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Experimental results for the Sherwood number variation near the lateral edge of the active surface of a smooth, finite-width flat plate in turbulent boundary layer flow are presented. Using naphthalene sublimation, local ...
Aero-Thermal Aspects of Film Cooled Nozzle Guide Vane Endwall—Part 2: Thermal Measurements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flow over gas turbine endwalls is complex and highly three-dimensional. As boundaries for modern engine designs are pushed, this already-complex flow is affected by aggressive application of film cooling flows that actively ...
Aero-Thermal Aspects of Film Cooled Nozzle Guide Vane Endwall—Part 1: Aerodynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The first-stage turbine of a modern gas turbine is subjected to high thermal loads which lead to a need for aggressive cooling schemes to protect its components from melting. Endwalls are particularly challenging to cool ...