Velocity Measurements in Vortical Flow of a LEX-Delta Wing Configuration in a Sideslip

1994 ◽

Vol 208 (2) ◽

pp. 99-105

Author(s):

J F Meyers ◽

L Scott Miller

Keyword(s):

Flow Field ◽

Delta Wing ◽

Video Camera ◽

Temporal Information ◽

Vortical Flow ◽

Velocity Measurements ◽

Flow Diagnostics ◽

Measurement Plane ◽

Component Velocity ◽

Velocity Images

A new non-intrusive flow diagnostics instrumentation system, Doppler global velocimetry, is presented. The system is capable of making simultaneous three-component velocity measurements within a selected measurement plane at video camera rates. These velocity images can provide the researcher with spatial and temporal information about the flow field in a global sense. The investigation of a vortical flow above a 75° delta wing comparing standard three-component fringe-type laser velocimetry measurements with Doppler global velocimetry measurements is presented.

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Instantaneous three-dimensional vorticity measurements in vortical flow over a delta wing

AIAA Journal ◽

10.2514/3.13719 ◽

1997 ◽

Vol 35 ◽

pp. 1612-1620

Author(s):

A. Honkan ◽

J. Andreopoulos

Keyword(s):

Delta Wing ◽

Three Dimensional ◽

Vortical Flow

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Euler/Navier-Stokes analysis of vortical flow about rounded leading edge delta wing

10.2514/6.1995-1847 ◽

1995 ◽

Author(s):

H Tsai ◽

C Leck ◽

L Guarino ◽

K Lee

Keyword(s):

Delta Wing ◽

Leading Edge ◽

Vortical Flow ◽

Navier Stokes

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Numerical Investigations for the Effect of Slender Body on Dynamic Rolling Characteristics of a 80°/60° Double Delta Wing

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.444-445.286 ◽

2013 ◽

Vol 444-445 ◽

pp. 286-292

Author(s):

Bing Han ◽

Min Xu ◽

Xi Pei ◽

Xiao Min An

Keyword(s):

Stokes Equations ◽

Delta Wing ◽

Time Lag ◽

Slender Body ◽

Vortical Flow ◽

Navier Stokes ◽

Rolling Motion ◽

Navier Stokes Equations ◽

Lag Effect ◽

Double Delta Wing

The effect of slender body on the rolling characteristics of a double delta wing is found by comparing the numerical simulation results of the double delta wing and wing-body configuration. The coupled computation system solving the Navier-Stokes equations and the rolling motion equation alternatively to obtain the unsteady vortical flow around the two configurations while rolling. The results conclusively showed the upwash effect of the slender body enhanced the energy of strake vortex and merged vortex.The aerodynamic lag of double delta wing is weak, contrarily, the time lag effect of the wing-body configuration is significant. The asymmetry vortices structure nearby the trailing edge are believed to be the main reason for the unsteady time lag effect.

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