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Flow And Heat Transfer In Gas Turbine Disk Cavities Subject To Nonuniform External Pressure Field
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Book Synopsis Flow and Heat Transfer in Gas Turbine Disk Cavities Subject to Nonuniform External Pressure Field by :
Download or read book Flow and Heat Transfer in Gas Turbine Disk Cavities Subject to Nonuniform External Pressure Field written by and published by . This book was released on 1995 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ingestion of hot gas from the main-stream gas path into turbine disk cavities, particularly the first-stage disk cavity, has become a serious concern for the next-generation industrial gas turbines features high rotor inlet temperature. Fluid temperature in the cavities increases further due to windage generated by fluid drag at the rotating and stationary surfaces. The resulting problem of rotor disk heat-up is exacerbated by the high disk rim temperature due to adverse (relatively flat) temperature profile of the mainstream gas in the annular flow passage of the turbine. This describes an investigation into local convective heat transfer coefficient and cooling effectiveness of the rotor disk, flow field in the disk cavity, computation of the flow field and heat transfer in the disk cavity, and mainstream gas injection and rotor disk cooling effectiveness by mass transfer analogy.
Book Synopsis Numerical Simulation of Secondary Flow in Gas Turbine Disc Cavities, Including Conjugate Heat Transfer by : Y. -H. Ho
Download or read book Numerical Simulation of Secondary Flow in Gas Turbine Disc Cavities, Including Conjugate Heat Transfer written by Y. -H. Ho and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine and Aeroengine Congress & Exhibition Birmingham, UK - June 10-13, 1996.
Book Synopsis Experimental Study of the Flow Field in a Model 1.5-stage Gas Turbine Rotor-stator Disk Cavity by : Nihal Junnarkar
Download or read book Experimental Study of the Flow Field in a Model 1.5-stage Gas Turbine Rotor-stator Disk Cavity written by Nihal Junnarkar and published by . This book was released on 2010 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: A major concern in the operation of present-day gas turbine engines is the ingestion of hot mainstream gas into rotor-stator disk cavities of the high-pressure turbine stages. Although the engines require high gas temperature at turbine entry for good performance efficiency, the ingested gas shortens the lives of the cavity internals, particularly that of the rotor disks. Steps such as installing seals at the disk rims and injecting purge (secondary) air bled from the compressor discharge into the cavities are implemented to reduce the gas ingestion. Although there are advantages to the above-mentioned steps, the performance of a gas turbine engine is diminished by the purge air bleed-off. This then requires that the cavity sealing function be achieved with as low a purge air supply rate as possible. This, in turn, renders imperative an in-depth understanding of the pressure and velocity fields in the main gas path and within the disk cavities. In this work, experiments were carried out in a model 1.5-stage (stator-rotor-stator) axial air turbine to study the ingestion of main air into the aft, rotor-stator, disk cavity. The cavity featured rotor and stator rim seals with radial clearance and axial overlap and an inner labyrinth seal. First, time-average static pressure distribution was measured in the main gas path upstream and downstream of the rotor as well as in the cavity to ensure that a nominally steady run condition had been achieved. Main gas ingestion was determined by measuring the concentration distribution of tracer gas (CO2) in the cavity. To map the cavity fluid velocity field, particle image velocimetry was employed. Results are reported for two main air flow rates, two rotor speeds, and four purge air flow rates.
Book Synopsis Numerical Analysis of Intra-cavity and Power-stream Flow Interaction in Multiple Gas-turbine Disk-cavities by : M. M. Athavale
Download or read book Numerical Analysis of Intra-cavity and Power-stream Flow Interaction in Multiple Gas-turbine Disk-cavities written by M. M. Athavale and published by . This book was released on 1995 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine and Aeroengine Congress and Exposition, Houston, Texas - June 5-8, 1995.
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sealing Characteristics of Gas Turbine Disk Cavities in the Presence of Mainstream Flow by : Vinod Ishwar Khilnani
Download or read book Sealing Characteristics of Gas Turbine Disk Cavities in the Presence of Mainstream Flow written by Vinod Ishwar Khilnani and published by . This book was released on 1998 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pressure and Velocity Measurements in Model and Real Gas Turbine Disk Cavities with Emphasis on Ingress Suppression by : Yaowen Wang
Download or read book Pressure and Velocity Measurements in Model and Real Gas Turbine Disk Cavities with Emphasis on Ingress Suppression written by Yaowen Wang and published by . This book was released on 1991 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Investigations of Flow Pattern and Heat Transfer in a Rotating Cavity Between Two Discs of the Compressor of a Siemens KWU V84.3 Gas Turbine by : Dieter Bohn
Download or read book Numerical Investigations of Flow Pattern and Heat Transfer in a Rotating Cavity Between Two Discs of the Compressor of a Siemens KWU V84.3 Gas Turbine written by Dieter Bohn and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine and Aeroengine Congress and Exposition, Houston, Texas - June 5-8, 1995.
Download or read book ASME Technical Papers written by and published by . This book was released on 2000 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 2000 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow Transition Phenomena and Heat Transfer Over the Pressure Surfaces of Gas Turbine Blades by : A. Brown
Download or read book Flow Transition Phenomena and Heat Transfer Over the Pressure Surfaces of Gas Turbine Blades written by A. Brown and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow and Heat Transfer Computations in a Rotating Cavity with Tangential Seal Air Flow by : Prabhat Tekriwal
Download or read book Flow and Heat Transfer Computations in a Rotating Cavity with Tangential Seal Air Flow written by Prabhat Tekriwal and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine & Aeroengine Congress & Exhibition, Orlando, FL, Jun 2 - Jun 5, 1997.
Download or read book Disk Pumping Test written by D. J. Graber and published by . This book was released on 1987 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study of secondary flows in gas turbine engines was conducted with cold flow models to develop an understanding of the disk pumping flow characteristics within a variety of disk/cavity configurations. Turbine disk torque experiments were conducted with co-rotating, counter-rotating, and one rotating/one static coaxial disk combinations. The experiments were conducted with selected combinations of disk shape, diaphragm between the rotating disks, bolts, and partial bolt covers. Turbine rim seal ingestion experiments were conducted with four seal configurations using a CO2 trace gas measurement technique. Results showed the effects of gap spacing and seal configuration on the rim seal ingestion rate. Compressor drum aerodynamic experiments were conducted with a six cavity model and with coolant flow injected from three radial locations. Results showed the effects of coolant flowrate and coolant injection location on the pressure distribution in each cavity. Compressor drum heat-transfer experiments were conducted for heating and cooling transient flow conditions. The results were compared on a dimensionless basis with results from previous steady-state rotating heat-transfer experiments and from a free convection correlation for stationary plates.
Download or read book Gas Turbines written by Bijay Sultanian and published by Cambridge University Press. This book was released on 2018-09-13 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: This physics-first, design-oriented textbook explains concepts of gas turbine secondary flows, reduced-order modeling methods, and 3-D CFD.
Book Synopsis Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 300) by :
Download or read book Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 300) written by and published by . This book was released on 1994 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP. written by and published by . This book was released on 1993 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
