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3 D Unsteady Simulation Of A Modern High Pressure Turbine Stage
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Book Synopsis 3-D Unsteady Simulation of a Modern High Pressure Turbine Stage by : Vikram Shyam
Download or read book 3-D Unsteady Simulation of a Modern High Pressure Turbine Stage written by Vikram Shyam and published by . This book was released on 2010 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This is the first 3-D unsteady RANS simulation of a highly loaded transonic turbine stage and results are compared to steady calculations and experiments. A low Reynolds number [kappa]-[epsilon] turbulence model is employed to provide closure for the RANS system. Phase-lag is used in the tangential direction to account for stator-rotor interaction. Due to the highly loaded characteristics of the stage, inviscid effects dominate the flowfield downstream of the rotor leading edge minimizing the effect of segregation to the leading edge region of the rotor blade. Unsteadiness was observed at the tip surface that results in intermittent 'hot spots'. It is demonstrated that unsteadiness in the tip gap is governed by both inviscid and viscous effects due to shock-boundary layer interaction and is not heavily dependent on pressure ratio across the tip gap. This is contrary to published observations that have primarily dealt with subsonic tip flows. The high relative Mach numbers in the tip gap lead to a choking of the leakage flow that translates to a relative attenuation of losses at higher loading. The efficacy of a new tip geometry is discussed to minimize heat flux at the tip while maintaining choked conditions. Simulated heat flux and pressure on the blade and hub agree favorably with experiment and literature. The time-averaged simulation provides a more conservative estimate of heat flux than the steady simulation. The shock structure formed due to stator-rotor interaction is analyzed. A preprocessor has also been developed as a conduit between the unstructured multi-block grid generation software GridPro and the CFD code TURBO.
Book Synopsis Three-Dimensional Unsteady Simulation of Aerodynamics and Heat Transfer in a Modern High Pressure Turbine Stage by : Vikram Shyam
Download or read book Three-Dimensional Unsteady Simulation of Aerodynamics and Heat Transfer in a Modern High Pressure Turbine Stage written by Vikram Shyam and published by BiblioGov. This book was released on 2013-06 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unsteady 3-D RANS simulations have been performed on a highly loaded transonic turbine stage and results are compared to steady calculations as well as to experiment. A low Reynolds number k-epsilon turbulence model is employed to provide closure for the RANS system. A phase-lag boundary condition is used in the tangential direction. This allows the unsteady simulation to be performed by using only one blade from each of the two rows. The objective of this work is to study the effect of unsteadiness on rotor heat transfer and to glean any insight into unsteady flow physics. The role of the stator wake passing on the pressure distribution at the leading edge is also studied. The simulated heat transfer and pressure results agreed favorably with experiment. The time-averaged heat transfer predicted by the unsteady simulation is higher than the heat transfer predicted by the steady simulation everywhere except at the leading edge. The shock structure formed due to stator-rotor interaction was analyzed. Heat transfer and pressure at the hub and casing were also studied. Thermal segregation was observed that leads to the heat transfer patterns predicted by steady and unsteady simulations to be different.
Book Synopsis Proceedings of the National Aerospace Propulsion Conference by : Chetan S. Mistry
Download or read book Proceedings of the National Aerospace Propulsion Conference written by Chetan S. Mistry and published by Springer Nature. This book was released on 2020-07-31 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents selected papers presented during the National Aerospace Propulsion Conference (NAPC) held at Indian Institute of Technology Kharagpur. It brings together contributions from the entire propulsion community, spanning air-breathing and non-air-breathing propulsion. The papers cover aerospace propulsion-related topics, and discuss relevant research advances made in this field. It will be of interest to researchers in industry and academia working on gas turbine, rocket, and jet engines.
Book Synopsis Three-dimensional, Unsteady, Parallel Simulation of a Multi-stage Turbine with Conjugate Heat Transfer by : Daryl Yao-Wah Lee
Download or read book Three-dimensional, Unsteady, Parallel Simulation of a Multi-stage Turbine with Conjugate Heat Transfer written by Daryl Yao-Wah Lee and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A computational fluid dynamics (CFD) procedure has been developed to predict the three-dimensional unsteady flow through a multi-stage axial turbine including the effects of heat transfer. This procedure simultaneously solves the unsteady Reynold's-averaged Navier-Stokes equations for the flow along with the heat conduction equation for the solid. Solution time is minimized through the use of multiple central processing units (CPUs).The blades of the multi-stage turbine move in time and the flow interacts with adjacent vane (stationary) passages through the use of a parallel, sliding-grid, inter-blade-row treatment. Described are the techniques used to solve the governing equations, the inter-blade-row treatment, and the parallelization of the overall approach. The uniqueness of this prediction method lies in the unsteady, multi-stage conjugate solution and the use of multiple combined cores. The approach is validated for the High Impact Technology Turbine designed and tested at the Air Force Research Laboratory.
Book Synopsis Unsteady Three Dimensional Navier-Stokes Analysis of a Hot Streak Transport Through an Axial High Pressure Turbine Stage by : L. Castillon
Download or read book Unsteady Three Dimensional Navier-Stokes Analysis of a Hot Streak Transport Through an Axial High Pressure Turbine Stage written by L. Castillon and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsteady Flow Analysis in a High-work Turbine Stage with Two 3-D Navier Stokes Codes by : C. Hah
Download or read book Unsteady Flow Analysis in a High-work Turbine Stage with Two 3-D Navier Stokes Codes written by C. Hah and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mathematical Modeling and Simulation of Systems by : Volodymyr Kazymyr
Download or read book Mathematical Modeling and Simulation of Systems written by Volodymyr Kazymyr and published by Springer Nature. This book was released on with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsteady Loss in a High Pressure Turbine Stage by : Stephen John Payne
Download or read book Unsteady Loss in a High Pressure Turbine Stage written by Stephen John Payne and published by . This book was released on 2001 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NAS Technical Summaries written by and published by . This book was released on 1994 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Steam Turbines for Modern Power Plants by : Tadashi Tanuma
Download or read book Advances in Steam Turbines for Modern Power Plants written by Tadashi Tanuma and published by Woodhead Publishing. This book was released on 2022-07-15 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Steam Turbines for Modern Power Plants, second edition, provides a fully revised and updated comprehensive review of steam turbine design, optimization, analysis and measurement. Editor Tadashi Tanuma and his team of expert contributors from around the globe have updated each chapter to reflect the latest research and experiences in the field, to help progress thermal power generation to meet sustainability goals. This book presents modern technologies for the design and development of steam turbines that supply affordable, reliable and stable power with much lower CO2 emissions. With the addition of two new chapters on 'Steam turbine mechanical design and analysis for high temperature, large and rapid change of temperature conditions' and 'Steam valves with low pressure losses' this edition will support students, researchers and professional engineers in designing and developing their own economical and environmentally concerned thermal power plants. - Fully updated to include the latest research and examples from around the globe - Includes brand new chapters, case studies, photographs, data, analysis and models - Chapters on the design and development of Steam Turbines are written by experienced design engineers who provide first-hand experience and lessons learned.
Book Synopsis Unsteady Aerodynamics, Aeroacoustics and Aeroelasticity of Turbomachines by : Kenneth C. Hall
Download or read book Unsteady Aerodynamics, Aeroacoustics and Aeroelasticity of Turbomachines written by Kenneth C. Hall and published by Springer Science & Business Media. This book was released on 2006-05-11 with total page 605 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is a collection of technical papers that were presented at the 10th International Symposium on Unsteady Aerodynamics, Aeroacoustics, and Aeroelasticity of Turbomachines held September 8-11, 2003 at Duke University in Durham, North Carolina. The papers represent the latest in state of the art research in the areas of aeroacoustics, aerothermodynamics, computational methods, experimental testing related to flow instabilities, flutter, forced response, multistage, and rotor-stator effects for turbomachinery.
Book Synopsis Engineering Applications of Computational Fluid Dynamics by : Ku Zilati Ku Shaari
Download or read book Engineering Applications of Computational Fluid Dynamics written by Ku Zilati Ku Shaari and published by Springer. This book was released on 2014-11-28 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the results of Computational Fluid Dynamics (CFD) analysis that can be used for conceptual studies of product design, detail product development, process troubleshooting. It demonstrates the benefit of CFD modeling as a cost saving, timely, safe and easy to scale-up methodology.
Book Synopsis Simulation of Three-dimensional Viscous Flow Within a Multistage Turbine by : John J. Adamczyk
Download or read book Simulation of Three-dimensional Viscous Flow Within a Multistage Turbine written by John J. Adamczyk and published by . This book was released on 1989 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On the Unsteady Secondary Flow Inside a Low Pressure Turbine Stage by : Carsten Schneider
Download or read book On the Unsteady Secondary Flow Inside a Low Pressure Turbine Stage written by Carsten Schneider and published by . This book was released on 2014 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Study of Unsteady Flow in High Pressure Turbine of Aircraft Engine by : Iouri N. Chmotine
Download or read book Numerical Study of Unsteady Flow in High Pressure Turbine of Aircraft Engine written by Iouri N. Chmotine and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
