Skip to main content Accessibility help
×
  1. Home
  2. Browse subjects
  3. Engineering
  4. Thermal-fluids engineering
  5. Content listing

Refine search

Refine search

Access:
Content type:
Publication date:
Apply   From and To filters
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

5487 results in Thermal-fluids engineering

Page 98 of 275

  • Appendix B - Sources of Experimental Data for Code Validation

  • Russell M. Cummings, William H. Mason, Virginia Polytechnic Institute and State University, Scott A. Morton, David R. McDaniel, University of Alabama, Birmingham
  • Book:
    Applied Computational Aerodynamics
    Published online:
    28 May 2018
    Print publication:
    27 April 2015, pp 766-775

  • Summary

    Some sources of aerodynamic geometry and experimental data for use in code evaluation are listed here. They are invaluable for making sure that you are using a computational aerodynamics code correctly. Always check a code that is new to you against known results, which we already discussed in Chapter 2. Note that rigorous validation of codes requires very careful analysis and an understanding of possible experimental, as well as computational, error (which was also discussed in Chapter 10). Most of the NASA and NACA reports cited here are available from the NASA Technical Reports Server, http://ntrs.nasa.gov/; a mirror website for NACA reports is available from Cranfield University at http://naca.central.cranfield.ac.uk/. Some of the reports listed here will also be provided at the book website: http://www.cambridge.org/aerodynamics. Most of the results are presented graphically, so a utility such as DataThief or Engauge is needed to digitize the data for comparison with calculations.

    Books

    Abbott, I.H. and von Doenhoff, A.E., Theory of Airfoil Sections, New York: Dover, 1959: This is a book every aerodynamicist should have. Look in the references for the original NACA airfoil reports. The aerodynamic descriptions contained in the reports are unsurpassed. However, beware of the actual data presented prior to 1939, which is when they discovered that they had to apply a different support interference correction to the measured results (see NACA Report 669 by Jacobs for details). Note that pressure distributions for airfoils are fairly rare. See also NACA Report 824, which is an earlier compendium similar to this book.

  • Appendix A - Geometry for Aerodynamicists

  • Russell M. Cummings, William H. Mason, Virginia Polytechnic Institute and State University, Scott A. Morton, David R. McDaniel, University of Alabama, Birmingham
  • Book:
    Applied Computational Aerodynamics
    Published online:
    28 May 2018
    Print publication:
    27 April 2015, pp 731-765

  • Summary

    Aerodynamicists control the flowfield through geometry definition and are always interested in possible geometric shapes that would be useful in design. This appendix provides the detailed definition of many of the classic shapes frequently specified in aerodynamics. It is not intended to be encyclopedic, but will provide a good starting point for where to obtain geometric definitions for aerodynamic shapes.

    The NACA Airfoils

    The NACA (National Advisory Committee for Aeronautics) airfoils were designed during the period from 1929 through 1947 under the direction of Eastman Jacobs at the NACA’s Langley Field Laboratory (now NASA Langley Research Center). Most of the airfoils were based on simple geometrical descriptions of the section shape, although the 6 and 6A series were developed using theoretical analysis and don’t have simple shape definitions. Although a new generation of airfoils has emerged as a result of improved understanding of airfoil performance and the ability to design new airfoils using computational methods, the NACA airfoils are still useful in many aerodynamic design applications. A number of references have been included to allow the reader to study both the older NACA literature and the new airfoil design ideas. Taken together, this literature provides a means of obtaining a rather complete understanding of the ways in which airfoils can be shaped to obtain desired performance characteristics.

  • Preface

  • Russell M. Cummings, William H. Mason, Virginia Polytechnic Institute and State University, Scott A. Morton, David R. McDaniel, University of Alabama, Birmingham
  • Book:
    Applied Computational Aerodynamics
    Published online:
    28 May 2018
    Print publication:
    27 April 2015, pp xv-xviii

  • Summary

    Aren’t there already plenty of excellent books on the topic of CFD? Yes, there are … if you are a graduate student who wants to learn the intricacies of numerical methods applied to solving the fundamental equations of fluid dynamics. However, we believe that a paradigm shift has taken place in CFD, where the development of algorithms and codes has largely been replaced by people applying well-established codes to real-world applications. While this is a natural progression in any field of science and engineering, we do not believe that the paradigm shift has filtered into the academic world. In academia, undergraduates learning about aerodynamics are still going through theories and applications that were being taught 40 or 50 years ago. We believe that it is time to write a book for people who want to be “intelligent users” of CA, not for those who want to continue developing CA tools. We strongly endorse the perspective of David Darmofal and Earll Murman of MIT (see AIAA Paper 2001–0870):

    Within aerodynamics, the need for re-engineering the traditional curriculum is critical. Industry, government, and (to some extent) academia has seen a significant shift away from engineering science and highly specialized research-oriented personnel toward product development and systems-thinking personnel. While technical expertise in aerodynamics is required, it plays a less critical role in the design of aircraft than in previous generations. In addition to these influences, aerodynamics has been revolutionized by the development and maturation of computational methods. These factors cast significant doubt that a traditional aerodynamics curriculum with its largely theoretical approach remains the most effective education for the next generation of aerospace engineers. We believe that change is in order.

    We agree completely and believe that CA needs to be brought into the undergraduate classroom as soon as possible. That is why we have written this book!

    The target audience for Applied Computational Aerodynamics is advanced undergraduates in aerospace engineering who want (or need) to learn CA in the broad context of learning to do computational investigations, while also learning engineering methods and aerodynamics. In addition, we believe that working engineers who need to apply CA methods, but who have no CA background, will also find the book valuable.

  • Appendix D - Computational Aerodynamics Programs

  • Russell M. Cummings, William H. Mason, Virginia Polytechnic Institute and State University, Scott A. Morton, David R. McDaniel, University of Alabama, Birmingham
  • Book:
    Applied Computational Aerodynamics
    Published online:
    28 May 2018
    Print publication:
    27 April 2015, pp 790-801

  • Summary

    Codes Available from Book Website

    Several types of programs are used to provide insight into aerodynamics, such as airfoil, wing, and aircraft analysis, as well as various aerodynamic design programs. The number of programs available has grown a great deal over the past few years, and a number of the programs have been discussed in Chapters 2 and 5 especially. This appendix will list and describe some of the programs that are either available from the book website (www.cambridge.org/aerodynamics) or that could be used to complete various projects listed at the end of chapters in the book. In this section we will just list and briefly describe some of the programs:

  • FOILGEN; provides ordinates for NACA 4-digit, 4-digit modified and 5-digit airfoils

  • LADSON; provides ordinates for NACA 6- and 6A-series airfoils

  • PANELV2: an airfoil panel method

  • THINFOIL; an airfoil CFD program

  • LIDRAG: a lift-induced drag program

  • LAMDES; a program that finds wing camber and twist to obtain a given splanload

  • FRICTION; a skin friction and form drag estimation program

  • VLMpc; a two-surface vortex lattice program

  • DESCAM; an inverse design airfoil program

  • TRIDAG; the Thomas algorithm solution approach for a tridiagonal matrix

    • FOILGEN

    This program is used for airfoil geometry generation. For airfoils with analytically defined ordinates, this program produces airfoil definition data sets in the format required for PANELV2. This includes NACA 4-digit, 4-digit modified and 5-digit airfoils. In addition, the NACA 6 and 6A camber lines are available. The user can combine any combination of thickness and camber lines available within these shapes. This provides a wide range of airfoil definitions. The program runs interactively, and a sample session, with inputs and outputs, is provided at www.cambridge.org/aerodynamics.

Dynamics of Rotating Machines
  • Michael I. Friswell, John E. T. Penny, Seamus D. Garvey, Arthur W. Lees
  • Published online:
    05 February 2015
    Print publication:
    31 March 2010
  • This book equips the reader to understand every important aspect of the dynamics of rotating machines. Will the vibration be large? What influences machine stability? How can the vibration be reduced? Which sorts of rotor vibration are the worst? The book develops this understanding initially using extremely simple models for each phenomenon, in which (at most) four equations capture the behavior. More detailed models are then developed based on finite element analysis, to enable the accurate simulation of the relevant phenomena for real machines. Analysis software (in MATLAB) is associated with this book, and novices to rotordynamics can expect to make good predictions of critical speeds and rotating mode shapes within days. The book is structured more as a learning guide than as a reference tome and provides readers with more than 100 worked examples and more than 100 problems and solutions.

Page 98 of 275