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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...
NLF Airfoil and Wing Design by Adjoint Method and Automatic Transition Prediction
NLF Airfoil Wing Design Adjoint Method Automatic Transition Prediction
2015/7/3
This paper describes the application of optimization technique based on control theory for natural-laminar-°ow airfoil and wing design in viscous compressible °ow modeled by the Reynolds averaged Navi...
Exploring the Limits of Shock-free Transonic Airfoil Design
Exploring Limits Shock-free Transonic Airfoil Design
2015/7/2
In this study the limits of shock-free transonic airfoil design are explored via computa tional uid dynamics and shape optimization. Using an inviscid ow solver coupled with the adjoint method for sha...
Control Theory Based Airfoil Design u for Potential Flow and a Finite Volume Discretization
Control Theory Based Airfoil Design Potential Flow Finite Volume Discretization
2015/7/1
This paper describes the implementation of opti-mization techniques based on control theory for air-foil design. In previous studies [6, 71 it was shown that control theory could be used to devise an ...
Paul Garabedian's Contributions to Transonic Airfoil and Wing Design
Transonic Airfoil Wing Design
2015/6/23
This note on Paul Garabedian's work on transonic airfoil and wing
design is written from the perspective of aeronautical engineering as well
as applied mathematics. Paul's contributions in this area...
Both third-order and fourth-order SD methods
are used on unstructured quadrilateral grids. The vortex shedding pattern of an airfoil
in an oscillating plunge motion becomes asymmetric at a su±cientl...
Numerical simulation of airfoil flows with a turbulence model
turbulence airfoil incompressible separation openFOAM
2014/5/15
Turbulent flows over AS240 and NACA4412 airfoil were simulated numerically using a two-equation turbulence model named k-ξ model. The predictions of velocity profiles and the pressure coefficient of a...
Computations of unsteady transonic flow over airfoil at low Reynolds number
transonic flow unsteady flow direct numerical simulation(DNS) unsteady separation airfoil vortex-shedding
2014/5/19
Transonic flow over a thin airfoil at low Reynolds number was studied numerically by directly solving two-dimensional full Navier-Stokes equations through 5th order weighted essentially non-oscillator...
Airfoil Roll Control by Bang-Bang Optimal Control Method with Plasma Actuators
Airfoil Roll Control Bang-Bang Optimal Control Method Plasma Actuators Plasma Physics
2012/4/20
The bang-bang optimal control method was proposed for glow discharge plasma actuators, taking account of practical issues, such as limited actuation states with instantaneously varied aerodynamic cont...
梯形渠道机翼形量水槽试验（Experiment on Airfoil-shaped Measuring Flume in Trapezoidal Canal）
梯形渠道 流量测量 机翼形
2009/12/28
基于Hager对圆锥筒及圆柱体量水槽测流原理分析，推求出梯形渠道机翼形量水槽在自由出流时的流量理论计算公式，指出流量校正系数可由相对水头确定。选择6种收缩比进行了一系列室内模型试验，并根据试验数据建立了相对流量与相对水头的无量纲关系式。结果表明，相对流量与相对水头具有良好的相关关系，流量计算最大相对误差为±3.5%，该量水槽临界淹没度可达0.90，控制断面收缩比为0.372～0.585时可得到较好...
Prediction of the airfoil characteristics, particularly for large incidence angles when stall occurs, depends on the prediction of separation. Turbulent flow around NACA 0012 airfoil in the range of i...
