Download or read book Neural Net Based Redesign of Transonic Turbines for Improved Unsteady Aerodynamic Performance written by and published by . This book was released on 1998 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NEURAL NET BASED REDESIGN OF TRANSONIC TURBINES FOR IMPROVED UNSTEADY AERODYNAMIC PERFORMANCE NASA TM 1998 208754 MAR 1 1999 written by United States. National Aeronautics and Space Administration and published by . This book was released on 1999* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improving the Unsteady Aerodynamic Performance of Transonic Turbines Using Neural Networks written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-09-27 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A recently developed neural net-based aerodynamic design procedure is used in the redesign of a transonic turbine stage to improve its unsteady aerodynamic performance. The redesign procedure used incorporates the advantages of both traditional response surface methodology and neural networks by employing a strategy called parameter-based partitioning of the design space. Starting from the reference design, a sequence of response surfaces based on both neural networks and polynomial fits are constructed to traverse the design space in search of an optimal solution that exhibits improved unsteady performance. The procedure combines the power of neural networks and the economy of low-order polynomials (in terms of number of simulations required and network training requirements). A time-accurate, two-dimensional, Navier-Stokes solver is used to evaluate the various intermediate designs and provide inputs to the optimization procedure. The procedure yielded a modified design that improves the aerodynamic performance through small changes to the reference design geometry. These results demonstrate the capabilities of the neural net-based design procedure, and also show the advantages of including high-fidelity unsteady simulations that capture the relevant flow physics in the design optimization process. Rai, Man Mohan and Madavan, Nateri K. and Huber, Frank W. Ames Research Center NASA/TM-1999-208791, NAS 1.15:208791, A-99V0041...
Download or read book Improving the Unsteady Aerodynamic Performance of Transonic Turbines Using Neural Networks written by Nasa Technical Reports Server (Ntrs) and published by BiblioGov. This book was released on 2013-08 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A recently developed neural net-based aerodynamic design procedure is used in the redesign of a transonic turbine stage to improve its unsteady aerodynamic performance. The redesign procedure used incorporates the advantages of both traditional response surface methodology and neural networks by employing a strategy called parameter-based partitioning of the design space. Starting from the reference design, a sequence of response surfaces based on both neural networks and polynomial fits are constructed to traverse the design space in search of an optimal solution that exhibits improved unsteady performance. The procedure combines the power of neural networks and the economy of low-order polynomials (in terms of number of simulations required and network training requirements). A time-accurate, two-dimensional, Navier-Stokes solver is used to evaluate the various intermediate designs and provide inputs to the optimization procedure. The procedure yielded a modified design that improves the aerodynamic performance through small changes to the reference design geometry. These results demonstrate the capabilities of the neural net-based design procedure, and also show the advantages of including high-fidelity unsteady simulations that capture the relevant flow physics in the design optimization process.
Download or read book Improving the Unsteady Aerodynamic Performance of Transonic Turbines Using Neural Networks written by Man Mohan Rai and published by . This book was released on 1999 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Axial Turbine Aerodynamics for Aero engines written by Zhengping Zou and published by Springer. This book was released on 2018-01-11 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Proceedings of the FISITA 2012 World Automotive Congress written by SAE-China and published by Springer Science & Business Media. This book was released on 2012-11-14 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the FISITA 2012 World Automotive Congress are selected from nearly 2,000 papers submitted to the 34th FISITA World Automotive Congress, which is held by Society of Automotive Engineers of China (SAE-China ) and the International Federation of Automotive Engineering Societies (FISITA). This proceedings focus on solutions for sustainable mobility in all areas of passenger car, truck and bus transportation. Volume 7: Vehicle Design and Testing (I) focuses on: •Vehicle Performance Development •Vehicle Integration Platformized and Universal Design •Development of CAD /CAE/CAM and CF Methods in Automotive Practice •Advanced Chassis, Body Structure and Design •Automotive Ergonomic, Interior and Exterior Trim Design •Vehicle Style and Aerodynamic Design •New Materials and Structures Above all researchers, professional engineers and graduates in fields of automotive engineering, mechanical engineering and electronic engineering will benefit from this book. SAE-China is a national academic organization composed of enterprises and professionals who focus on research, design and education in the fields of automotive and related industries. FISITA is the umbrella organization for the national automotive societies in 37 countries around the world. It was founded in Paris in 1948 with the purpose of bringing engineers from around the world together in a spirit of cooperation to share ideas and advance the technological development of the automobile.
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1999-07 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 1999-01-07 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 35th AIAA ASME SAE ASEE Joint Propulsion Conference and Exhibit written by and published by . This book was released on 1999 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evolutionary Algorithms and Intelligent Tools in Engineering Optimization written by and published by WIT Press (UK). This book was released on 2005 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolutionary algorithms are very powerful techniques used to find solutions to real-world search and optimisation problems. In this text, a large spectrum of innovative evolutionary and intelligence methods are presented and used for solving various application problems.
Download or read book Lecture series written by and published by . This book was released on 2000 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace America written by and published by . This book was released on 1999 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Algorithms for Optimisation in Aeronautics and Turbomachinery written by Jacques Periaux and published by . This book was released on 2000 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 40th AIAA Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 2002 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Unsteady Aerodynamics and Heat Transfer in a Transonic Turbine Stage written by D. A. Ashworth and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
