AAE 334 Lecture CFD(1) - ComputaTonal Aerodynamics 2 What is computaTonal fuid dynamics \u2022 ComputaTonal fuid dynamics(CFD is the science o\u00b1 predicTng

AAE 334 Lecture CFD(1) - ComputaTonal Aerodynamics 2 What...

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Computational Aerodynamics
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2 What is computational fluid dynamics?
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3 Domain for bottle filling problem. Filling Nozzle Bottle CFD - how it works Analysis begins with a mathematical model of a physical problem. Conservation of matter, momentum, and energy must be satisfied throughout the region of interest. Fluid properties are modeled empirically. Simplifying assumptions are made in order to make the problem tractable (e.g., steady-state, incompressible, inviscid, two-dimensional). Provide appropriate initial and boundary conditions for the problem.
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Computational Aerodynamics for Aircraft Design Antony Jameson
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Analogy between computational and experimental aerodynamics 9
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10 Thin Airfoil Theory
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2D Panel Methods 11 Xfoil and XFLR%
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Vortex Lattice Method 12
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Vortex Lattice Method 13 Meet the flow tangency condition at N control points Solve for N values of the vortex strengths Can include camber by 1. Placing panels on the camber line 2. Use a planar lifting surface, but adjust the angle of the freestream relative to each panel to account for camber Cannot account for thickness
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Swept Wings Lifting line theory is no longer valid Weissinger method – vortex lattice method with one chordwise panel: 14
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3-D Panel Method – Smith-Hess Method 15
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  • Spring '09
  • COLLICOTT
  • Fluid Dynamics, Computational fluid dynamics, Discretization Methods

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