Coupling time-stepping numerical methods and standard aerodynamics codes for instability analysis of flows in complex geometries

Gómez Carrasco, Francisco and Gómez, Raquel and Theofilis, Vassilios (2011). Coupling time-stepping numerical methods and standard aerodynamics codes for instability analysis of flows in complex geometries. In: "6th Theoretical Fluid Mechanics Conference", 27/06/2011 - 30/06/2011, Honolulu, Hawaii. ISBN 978-1-62410-144-1. pp..

Description

Title: Coupling time-stepping numerical methods and standard aerodynamics codes for instability analysis of flows in complex geometries
Author/s:
  • Gómez Carrasco, Francisco
  • Gómez, Raquel
  • Theofilis, Vassilios
Item Type: Presentation at Congress or Conference (Article)
Event Title: 6th Theoretical Fluid Mechanics Conference
Event Dates: 27/06/2011 - 30/06/2011
Event Location: Honolulu, Hawaii
Title of Book: Proceedings of 6th Theoretical Fluid Mechanics Conference
Date: 2011
ISBN: 978-1-62410-144-1
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The development of a global instability analysis code coupling a time-stepping approach, as applied to the solution of BiGlobal and TriGlobal instability analysis 1, 2 and finite-volume-based spatial discretization, as used in standard aerodynamics codes is presented. The key advantage of the time-stepping method over matrix-formulation approaches is that the former provides a solution to the computer-storage issues associated with the latter methodology. To-date both approaches are successfully in use to analyze instability in complex geometries, although their relative advantages have never been quantified. The ultimate goal of the present work is to address this issue in the context of spatial discretization schemes typically used in industry. The time-stepping approach of Chiba 3 has been implemented in conjunction with two direct numerical simulation algorithms, one based on the typically-used in this context high-order method and another based on low-order methods representative of those in common use in industry. The two codes have been validated with solutions of the BiGlobal EVP and it has been showed that small errors in the base flow do not have affect significantly the results. As a result, a three-dimensional compressible unsteady second-order code for global linear stability has been successfully developed based on finite-volume spatial discretization and time-stepping method with the ability to study complex geometries by means of unstructured and hybrid meshes

More information

Item ID: 13084
DC Identifier: http://oa.upm.es/13084/
OAI Identifier: oai:oa.upm.es:13084
Official URL: http://arc.aiaa.org/doi/book/10.2514/MTFC11
Deposited by: Memoria Investigacion
Deposited on: 04 Dec 2012 09:45
Last Modified: 21 Apr 2016 12:23
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