Towards a priori uncertainty quantification in coarse-grained molecular dynamics: Generalized multipole potentials [0.03%]
朝向粗粒化分子动力学中的先验不确定性量化：广义多极位势
Paul N Patrone,Andrew M Dienstfrey,Geoffrey B McFadden
Paul N Patrone
In computational materials science, coarse-graining approaches often lack a priori uncertainty quantification (UQ) tools that estimate the accuracy of a reduced-order model before it is calibrated or deployed. This is especially the case in...
Receptivity and Forced Response to Acoustic Disturbances in High-Speed Boundary Layers [0.03%]
高速边界层对声扰动的被动响应与强迫响应
P Balakumar,Rudolph A King,Amanda Chou et al.
P Balakumar et al.
Supersonic boundary-layer receptivity to freestream acoustic disturbances is investigated by solving the Navier-Stokes equations for Mach 3.5 flow over a 7 deg half-angle cone. The freestream disturbances are generated from a wavy wall plac...
Transition Prediction in Hypersonic Boundary Layers Using Receptivity and Freestream Spectra [0.03%]
高超声速边界层转换预测的来流谱 receptivity 方法研究
P Balakumar,Amanda Chou
P Balakumar
Boundary-layer transition in hypersonic flows over a straight cone can be predicted using measured freestream spectra, receptivity, and threshold values for the wall pressure fluctuations at the transition onset points. Simulations are perf...
Contributions of Particle Image Velocimetry to Helicopter Aerodynamics: A Review [0.03%]
颗粒图像 velocimetry 在直升机气动中的贡献：综述
Markus Raffel,André Bauknecht,Manikandan Ramasamy et al.
Markus Raffel et al.
The advancement of flow measurement techniques continues to extend experimental boundaries and thus significantly contributes to improving our understanding of both basic and applied aerodynamics. This is particularly apparent in the case o...
Pedro Paredes,Meelan M Choudhari,Fei Li
Pedro Paredes
The "Reshotko-Tumin transition criterion" based on optimal transient growth successfully correlates laboratory measurements of roughness induced transition over blunt body configurations. Even though transient growth has not been conclusive...
Bret K Stanford
Bret K Stanford
This paper demonstrates a technique for locating the optimal control surface layout of an aeroservoelastic Common Research Model wingbox, in the context of maneuver load alleviation and active flutter suppression. The combinatorial actuator...
Unseeded Velocity Measurements Around a Transonic Airfoil Using Femtosecond-Laser Tagging [0.03%]
基于飞秒激光诱导荧光种子点的跨音速机翼绕流速度测量
Ross A Burns,Paul M Danehy
Ross A Burns
Femtosecond laser electronic excitation tagging (FLEET) velocimetry was used to study the flowfield around a symmetric, transonic airfoil in the NASA Langley 0.3-m TCT facility. A nominal Mach number of 0.85 was investigated with a total pr...
Yibin Zhang,Paul M Danehy,Richard B Miles
Yibin Zhang
Femtosecond laser tagging is demonstrated for the first time in R134a (1,1,1,2-Tetrafluoroethane) gas, and in mixtures of R134a with small quantities of air. A systematic study of this tagging method is explored through the adjustment of ga...
Direct Numerical Simulation Database for Hypersonic Turbulent Boundary Layers [0.03%]
高超声速湍流边界层直接数值模拟数据库
Chao Zhang,Lian Duan,Meelan M Choudhari
Chao Zhang
In this paper, we present a direct numerical simulation database of high-speed zero-pressure-gradient turbulent boundary layers developing spatially over a flat plate with nominal freestream Mach number ranging from 2.5 to 14 and wall-to-re...
K K Gupta,S B Choi,S F Lung et al.
K K Gupta et al.
This paper describes a novel computational-fluid-dynamics-based numerical solution procedure for effective simulation of aerothermoacoustics problems with application to aerospace vehicles. A finite element idealization is employed for both...