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An Initial Investigation of Adjoint-Based Unstructured Grid Adaptation for Vortical Flow Simulations
Author
Source
Modelling and Simulation in Engineering
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-03-14
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
A computational fluid dynamics (CFDs) method utilizing unstructured grid technology has been employed to compute vortical flow around a 65° delta wing with sharp leading edge, which is specially known as the geometry of the second international vortex flow experiment (VFE-2).
In VFE-2, 65° delta wings with different leading edges had been broadly investigated by experiments, which resulted in a special database for CFDs codes validation.
The emphasis of this paper is to investigate the effectiveness of an adjoint-base grid adaptation method for unstructured grid in capturing concentrated vortices generated at sharp edges or flow separation lines of lifting surfaces flying at high angles of attack.
Earlier experiences in vortical flow simulations had indicated that the vortex behavior is highly dependent on the local grid resolution both on body surface and space.
The adjoint-based adaptation method used here is hoped to save grid points with a reasonable grid resolution for vortical flow simulations.
The basic idea is to construct a new adaptive sensor in a grid adaptation process with the intent to tell where the elements should be smaller or larger by introducing an adjoint formulation to relate the estimated functional error to local residual errors of both the primal and adjoint solutions.
American Psychological Association (APA)
Li, Li. 2011. An Initial Investigation of Adjoint-Based Unstructured Grid Adaptation for Vortical Flow Simulations. Modelling and Simulation in Engineering،Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-455385
Modern Language Association (MLA)
Li, Li. An Initial Investigation of Adjoint-Based Unstructured Grid Adaptation for Vortical Flow Simulations. Modelling and Simulation in Engineering No. 2011 (2011), pp.1-9.
https://search.emarefa.net/detail/BIM-455385
American Medical Association (AMA)
Li, Li. An Initial Investigation of Adjoint-Based Unstructured Grid Adaptation for Vortical Flow Simulations. Modelling and Simulation in Engineering. 2011. Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-455385
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-455385