A wake-integral method for drag prediction

Carre, A. and Cordero Gracia, Marta Amalia and Gomez Lopez, Mariola and Ponsin Roca, Jorge (2014). A wake-integral method for drag prediction. In: "6th European Conference on Computational Fluid Dynamics (ECFD VI)", 20-25 Jul 2015, Barcelona, Spain. ISBN 978-84-942844-7-2. pp. 6425-6434.

Description

Title: A wake-integral method for drag prediction
Author/s:
  • Carre, A.
  • Cordero Gracia, Marta Amalia
  • Gomez Lopez, Mariola
  • Ponsin Roca, Jorge
Item Type: Presentation at Congress or Conference (Article)
Event Title: 6th European Conference on Computational Fluid Dynamics (ECFD VI)
Event Dates: 20-25 Jul 2015
Event Location: Barcelona, Spain
Title of Book: Proceedings of the 6th European Conference on Computational Fluid Dynamics (ECFD VI)
Date: 2014
ISBN: 978-84-942844-7-2
Volume: V
Subjects:
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Matemática Aplicada a la Ingeniería Aeroespacial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper describes the theoretical development and implementation issues of a far field induced drag extraction tool based on the Maskell integral. Far field methods provide an alternative to classical near field approach, offering the possibility of decompose drag contributions based on their physical source and improves prediction accuracy on coarse meshes. Instead of classical triangulation of intersection nodes contained in the cutting plane, a more regular adaptive mesh is implemented in order to improve flow reconstruction smoothness and accuracy. Both meshes results are compared and the influence of generation parameters of the bidimensional adaptive mesh is discussed. Numerical diffusion plays a major role in vortex decay, and because of that phenomena, a correction factor is needed in order to back as much as possible the cutting plane without loosing precision. Finally, Onera M6 tests are conducted, showing acceptable precision in drag prediction until seven or more chords downstream.

More information

Item ID: 41711
DC Identifier: http://oa.upm.es/41711/
OAI Identifier: oai:oa.upm.es:41711
Official URL: http://www.wccm-eccm-ecfd2014.org
Deposited by: Memoria Investigacion
Deposited on: 20 Oct 2016 10:35
Last Modified: 20 Oct 2016 10:35
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