Use of Navier-Stokes Analysis in Section Design

The Navier-Stokes analysis method and a design technique based on conformal mapping are combined to develop new 2-D thick sections. The Eppler- Somers design technique allows for fast design of arbitrary section shape. The well-validated David Taylor Navier-Stokes code is used to optimise the thickn...

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Bibliographic Details
Main Author: Nguyen, Phuc N
Format: Report
Language:English
Subjects:
Aerodynamics
BASE LINES
BOUNDARY LAYER
CONFORMAL MAPPING
FOILS(MATERIALS)
KINETIC ENERGY
MOMENTUM TRANSFER
NAVIER STOKES EQUATIONS
NAVIER STOKES METHOD
PANEL METHOD
PE62323N
REGIONS
SHAPE
SHEAR STRESSES
STRESSES
THICKNESS
THIN FOIL THEORY
THIN WINGS
TRAILING EDGES
TURBULENCE
WAKE
WUDN578521
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Summary:The Navier-Stokes analysis method and a design technique based on conformal mapping are combined to develop new 2-D thick sections. The Eppler- Somers design technique allows for fast design of arbitrary section shape. The well-validated David Taylor Navier-Stokes code is used to optimise the thickness of the section. From previous experimental results, the turbulence characteristics in the near-wake region correlate with the pressure spectra on the trailing edge of a 2-D lifting surface. Therefore, the turbulent kinetic energy, and the Reynolds shear stress are used as design parameters to develop new 2-D sections. Minimizing these parameters is assumed to provide desirable boundary layer and wake characteristics. The characteristics of one new section are compared with those of a baseline section to demonstrate the new foil design method.