Author: A. SimonsPublisher:
ISBN:
Category :
Languages : en
Pages : 31
Book Description
Aerodynamic Performance of a Multi-stage Gas Turbine
Author: A. SimonsAdvanced Multistage Turbine Blade Aerodynamics, Performance, Cooling, and Heat Transfer
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
The gas turbine has the potential for power production at the highest possible efficiency. The challenge is to ensure that gas turbines operate at the optimum efficiency so as to use the least fuel and produce minimum emissions. A key component to meeting this challenge is the turbine. Turbine performance, both aerodynamics and heat transfer, is one of the barrier advanced gas turbine development technologies. This is a result of the complex, highly three-dimensional and unsteady flow phenomena in the turbine. Improved turbine aerodynamic performance has been achieved with three-dimensional highly-loaded airfoil designs, accomplished utilizing Euler or Navier-Stokes Computational Fluid Dynamics (CFD) codes. These design codes consider steady flow through isolated blade rows. Thus they do not account for unsteady flow effects. However, unsteady flow effects have a significant impact on performance. Also, CFD codes predict the complete flow field. The experimental verification of these codes has traditionally been accomplished with point data - not corresponding plane field measurements. Thus, although advanced CFD predictions of the highly complex and three-dimensional turbine flow fields are available, corresponding data are not. To improve the design capability for high temperature turbines, a detailed understanding of the highly unsteady and three-dimensional flow through multi-stage turbines is necessary. Thus, unique data are required which quantify the unsteady three-dimensional flow through multi-stage turbine blade rows, including the effect of the film coolant flow. Also, as design CFD codes do not account for unsteady flow effects, the next logical challenge and the current thrust in CFD code development is multiple-stage analyses that account for the interactions between neighboring blade rows. Again, to verify and or direct the development of these advanced codes, complete three-dimensional unsteady flow field data are needed.
Gas Turbines for Electric Power Generation
Author: S. Can GülenPublisher: Cambridge University Press
ISBN: 1108416659
Category : Science
Languages : en
Pages : 735
Book Description
Everything you wanted to know about industrial gas turbines for electric power generation in one source with hard-to-find, hands-on technical information.
Axial Turbine Aerodynamics for Aero-engines
Author: Zhengping ZouPublisher: Springer
ISBN: 9811057508
Category : Technology & Engineering
Languages : en
Pages : 572
Book Description
This book is a monograph on aerodynamics of aero-engine gas turbines focusing on the new progresses on flow mechanism and design methods in the recent 20 years. Starting with basic principles in aerodynamics and thermodynamics, this book systematically expounds the recent research on mechanisms of flows in axial gas turbines, including high pressure and low pressure turbines, inter-turbine ducts and turbine rear frame ducts, and introduces the classical and innovative numerical evaluation methods in different dimensions. This book also summarizes the latest research achievements in the field of gas turbine aerodynamic design and flow control, and the multidisciplinary conjugate problems involved with gas turbines. This book should be helpful for scientific and technical staffs, college teachers, graduate students, and senior college students, who are involved in research and design of gas turbines.
Cold-air Performance of Compressor-drive Turbine of Department of Energy Upgraded Automobile Gas Turbine Engine
Author: Richard J. RoelkeAerodynamic Design of Axial Flow Compressors
Author: Robert O. BullockPublisher:
ISBN:
Category : Axial flow compressors
Languages : en
Pages : 552
Book Description
Combustor Aerodynamics
Author: Yehia A. EldrainyPublisher: Penerbit UTM Press
ISBN: 9835208530
Category : Combustion, Theory of
Languages : en
Pages : 5
Book Description
This book describes the new innovation of gas turbine swirler. The novel swirler is a multiple entry swirler which allows the swirl number to vary on the same value of Reynolds number, by regulating the ratio between the axial and tangential flow momentum. Three–dimensional turbulence and isothermal flow characteristics of an abrupt combustor model with different type of swirler (axial, radial and multiple inlet) were simulated with Reynolds–Averaged Navier–Stokes (RANS) using ANSYS Fluent 12 software. Results of the different turbulence models used in swirling flow were reviewed and compared. The different swirler’ aerodynamic performance was investigated through Computational Fluid Dynamics (CFD) simulations. The aerodynamics performance includes shape and size of the Central Recirculation Zone (CRZ), turbulence intensity and pressure losses. It was found that the size of then CRZ and turbulence strength is directly proportional to the tangential axial air flow rate ratio. Therefore, proper selection of a swirler is needed to enhance combustor performance and to reduce exhaust emissions.
The Aerothermodynamics of Aircraft Gas Turbine Engines
Author: Gordon C. OatesPublisher:
ISBN:
Category : Aerothermodynamics
Languages : en
Pages : 830
Book Description
Cold-Air Performance of Compressor-Drive Turbine of Department of Energy Upgraded Automobile Gas Turbine Engine. 2
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781723419041
Category :
Languages : en
Pages : 24
Book Description
The aerodynamic performance of the compressor-drive turbine of the DOE upgraded gas turbine engine was determined in low temperature air. The as-received cast rotor blading had a significantly thicker profile than design and a fairly rough surface finish. Because of these blading imperfections a series of stage tests with modified rotors were made. These included the as-cast rotor, a reduced-roughness rotor, and a rotor with blades thinned to near design. Significant performance changes were measured. Tests were also made to determine the effect of Reynolds number on the turbine performance. Comparisons are made between this turbine and the compressor-drive turbine of the DOE baseline gas turbine engine. Roelke, R. J. and Haas, J. E. Glenn Research Center NASA-TM-82818, DOE/NASA/1011-36, NAS 1.15:82818, AVRADCOM-TR-82-C-1 EC-77-A-31-1011
Gas Turbine Aero-Thermodynamics
Author: F. WhittlePublisher: Elsevier
ISBN: 1483293211
Category : Science
Languages : en
Pages : 276
Book Description
For the first time simplified methods of dealing with gas turbine thermal cycles, and further theoretical innovations, have been embodied into a concise textbook. All the major aspects of the subject are covered in a comprehensive and lucid manner. Examples are included for greater clarity