NDLI: Transonic navier-stokes wing solutions using a zonal approach. part 2: high angle-of-attack simulation

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Transonic navier-stokes wing solutions using a zonal approach. part 2: high angle-of-attack simulation

Content Provider	NASA Technical Reports Server (NTRS)
Author	Chaderjian, N. M.
Copyright Year	1986
Description	A computer code is under development whereby the thin-layer Reynolds-averaged Navier-Stokes equations are to be applied to realistic fighter-aircraft configurations. This transonic Navier-Stokes code (TNS) utilizes a zonal approach in order to treat complex geometries and satisfy in-core computer memory constraints. The zonal approach has been applied to isolated wing geometries in order to facilitate code development. Part 1 of this paper addresses the TNS finite-difference algorithm, zonal methodology, and code validation with experimental data. Part 2 of this paper addresses some numerical issues such as code robustness, efficiency, and accuracy at high angles of attack. Special free-stream-preserving metrics proved an effective way to treat H-mesh singularities over a large range of severe flow conditions, including strong leading-edge flow gradients, massive shock-induced separation, and stall. Furthermore, lift and drag coefficients have been computed for a wing up through CLmax. Numerical oil flow patterns and particle trajectories are presented both for subcritical and transonic flow. These flow simulations are rich with complex separated flow physics and demonstrate the efficiency and robustness of the zonal approach.
File Size	670185
Page Count	13
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19860022920
Archival Resource Key	ark:/13960/t9t19wh0z
Language	English
Publisher Date	1986-04-01
Access Restriction	Open
Subject Keyword	Aerodynamics Transonic Flow Computational Fluid Dynamics Reynolds Number Memory Computers Lift Computer Programs Navier-stokes Equation Wings Algorithms Constraints Coding Finite Difference Theory Angle of Attack Aircraft Configurations Fighter Aircraft Flight Simulation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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