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Shape Optimization of a Blunt Body Vibro-wind Galloping Oscillator
Vibro-wind Galloping instability Energy harvesting
2015/8/26
The nonlinear dynamics of a transverse galloping blunt body oscillator is analyzed with respect to its geometric shape and size. The oscillator's equation of motion is studied using an approximation f...
Theoretical Background for Aerodynamic Shape Optimization
Theoretical Background Aerodynamic Shape Optimization
2015/7/3
This is the first of three lectures prepared by the authors for the von Karman Institute that deal with the subject of aerodynamic shape optimization. In this lecture we introduce some theoretic...
Robust Airfoil Optimization Using Maximum Expected Value and Expected Maximum Value Approaches
Robust Airfoil Optimization Maximum Expected Value Expected Maximum Value Approaches
2015/7/3
Deterministic engineering design often leads to unexpected or physically unrealizable results. This is due to the fact that deterministic design is not able to capture the effects of even slight natur...
Optimization of Flow Past a Moving Deformable Airfoil using Spectral Difference Method
Optimization Flow Past Moving Deformable Airfoil Spectral Diff erence Method
2015/7/3
In this paper we examine the low Reynolds number flow past a harmonically plunging,pitching, and deforming airfoil, both individually and in combination. The lift and thrust characteristics of t...
A Systematic Study on the Impact of Dimensionality for a Two-Dimensional Aerodynamic Optimization Model Problem
Systematic Study Impact Dimensionality Two-Dimensional Aerodynamic Optimization Model Problem
2015/7/3
A model problem, based on the NACA0012 airfoil, is studied. The thickness distribution of the symmetric NACA0012 airfoil is optimally approximated with a 4th-order Bezier curve. This best-fit ap...
Adjoint-Based Aerodynamic Optimization of Supersonic Biplane Airfoils
Aerodynamic Optimization Supersonic Biplane Airfoils
2015/7/3
This paper addresses the aerodynamic performance of Busemann-type supersonic biplanes at both design and off design conditions. An adjoint-based optimization technique is used to optimize the aerodyna...
Enhancement of a Class of Adjoint Design Methods via Optimization of Parameters
Enhancement Adjoint Design Methods Optimization Parameters
2015/7/3
INCE the adjoint method was introduced to aerodynamic shape optimization in 1980s [1,2], this method has become a popular choice for design problems involving fluid flow and has been succe...
A Pilot Project in Preparation of an Aerodynamic Optimization Workshop with Lessons Learned
Pilot Project Preparation Aerodynamic Optimization Workshop Lessons Learned
2015/7/2
This paper is an addendum to a recent publication on a Comparative Study of 3D Wing Drag Minimization by Different Optimization Techniques; with a focus on a path forward towards the development of a ...
Comparative Study of 3D Wing Drag Minimization by Different Optimization Techniques
3D Wing Drag Minimization Diff erent Optimization Techniques
2015/7/2
The main goal of this paper is to document a comparative study of different CFD based optimization techniques applied to the so lution of a 3D wing drag minimization problem.
AN ADJOINT METHOD FOR DESIGN OPTIMIZATION OF SHIP HULLS
ADJOINT METHOD DESIGN OPTIMIZATION SHIP HULLS
2015/7/2
We present a design optimization method for reducing the wave resistance (drag) of surface piercing hulls.
One-shot pseudo-time method for aerodynamic shape optimization using the Navier–Stokes equations
aerodynamic shape optimization simultaneous pseudo-time stepping Navier–Stokes equations
2015/7/2
This paper presents a numerical method for aerodynamic shape optimization problems in compressible viscous flow. It is based on simultaneous pseudo-time stepping in which stationary states are o...
Multi-point Aero-Structural Optimization of Wings Including Planform Variations
Multi-point Aero-Structural Optimization Wings Planform Variations
2015/7/2
This paper focuses on wing optimization via control theory using a multi-point design method. Based on the design methodology previously developed for wing section and planform optimization at a speci...
Aerodynamic Shape Optimization Part II:Sample Applications
Aerodynamic Shape Optimization Sample Applications
2015/7/2
This is the second of two lectures prepared by the authors for the von Karman Institute that deal with the subject of aerodynamic shape optimization.
Aerodynamic Shape Optimization Part I: Theoretical Background
Aerodynamic Shape Optimization Theoretical Background
2015/7/2
This is the first of two lectures prepared by the authors for the von Karman Institute that deal with the subject of aerodynamic shape optimization.
Aerodynamic Shape Optimization for the World's Fastest P-51
Aerodynamic Shape Optimization World's Fastest P-51
2015/7/2
In this paper, an Adjoint-based automatic design methodology has been applied to redesign the wing of the P51 \Dago Red", an aircraft competing in the Reno Air Races.