Unsteady heat-flux measurements of second-mode instability waves in a hypersonic flat-plate boundary layer [0.03%]
高超声速平板边界层第二模不稳定性波的热通量测量研究
Michael A Kegerise,Shann J Rufer
Michael A Kegerise
In this paper, we report on the application of the atomic layer thermopile (ALTP) heat-flux sensor to the measurement of laminar-to-turbulent transition in a hypersonic flat-plate boundary layer. The centerline of the flat-plate model was i...
Mark P Wernet,Nicholas J Georgiadis,Randy J Locke
Mark P Wernet
Prediction of flow-field properties in supersonic jets using computational fluid dynamics (CFD) code predictions has become routine; however, obtaining accurate solutions becomes more challenging when there is a significant temperature diff...
Volume velocity in a canine larynx model using time‑resolved tomographic particle image velocimetry [0.03%]
基于时序断层粒子图像测速的犬喉模型容积流速研究
Charles Farbos de Luzan,Liran Oren,Alexandra Maddox et al.
Charles Farbos de Luzan et al.
In the classic source-filter theory, the source of sound is flow modulation. "Flow" is the flow rate (Q) and flow modulation is dQ/dt. Other investigators have argued, using theoretical, computational, and mechanical models of the larynx, t...
An experimental framework to capture the flow dynamics of droplets expelled by a sneeze [0.03%]
捕捉打喷嚏时排出的液滴流动动力学的实验框架
Prateek Bahl,Charitha M de Silva,Abrar Ahmad Chughtai et al.
Prateek Bahl et al.
Abstract: Respiratory activities such as sneezing generate pathogen laden droplets that can deposit in the respiratory tract of a susceptible host to initiate infection. The extent of spread of these droplets determines t...
Zhaoguang Wang,Thomas Hopfes,Marcus Giglmaier et al.
Zhaoguang Wang et al.
Abstract: The present experimental study investigates the shear stripping breakup of single droplets in subsonic and supersonic gaseous flows. In contrast to most research that places emphasis on the Weber number (We), we...
Visualization of sneeze ejecta: steps of fluid fragmentation leading to respiratory droplets [0.03%]
喷嚏可视化：导致呼吸飞沫的流体分离步骤
B E Scharfman,A H Techet,J W M Bush et al.
B E Scharfman et al.
Coughs and sneezes feature turbulent, multiphase flows that may contain pathogen-bearing droplets of mucosalivary fluid. As such, they can contribute to the spread of numerous infectious diseases, including influenza and SARS. The range of ...
Vortex dynamics and scalar transport in the wake of a bluff body driven through a steady recirculating flow [0.03%]
驻定回流中穿过块体物体的漩涡动力学及标量传输
Stephane B Poussou,Michael W Plesniak
Stephane B Poussou
The air ventilation system in wide-body aircraft cabins provides passengers with a healthy breathing environment. In recent years, the increase in global air traffic has amplified contamination risks by airborne flu-like diseases and terror...
Micro-flow analysis by molecular tagging velocimetry and planar Raman-scattering [0.03%]
基于分子标记测速和拉曼散射的微流分析
Karsten Roetmann,Waldemar Schmunk,Christoph S Garbe et al.
Karsten Roetmann et al.
The two dimensional molecular tagging velocimetry (2D-MTV) has been used to measure velocity fields of the flow in a micro mixer. Instead of commonly used micro particles an optical tagging of the flow has been performed by using a caged dy...
Quantitative measurement of density fluctuations with a full-field laser interferometric vibrometer [0.03%]
全场激光干涉测振仪的密度扰动定量测试研究
Felix Greiffenhagen,Jakob Woisetschläger,Johannes Gürtler et al.
Felix Greiffenhagen et al.
Abstract: Modern, lean and premixed gas turbine combustion concepts for low NOx emissions are prone to combustion instabilities. In a previous work it was shown that laser interferometric vibrometry (LIV) can be used to r...
Density and Viscosity Matched Newtonian and non-Newtonian Blood-Analog Solutions with PDMS Refractive Index [0.03%]
与PDMS折射率匹配的牛顿和非牛顿类血液溶液的密度和粘度匹配
Melissa C Brindise,Margaret M Busse,Pavlos P Vlachos
Melissa C Brindise
Optical imaging is commonly used to investigate biological flows and cardiovascular disease using compliant silicone polydimethysiloxane (PDMS) Sylgard 184 geometries. However, selecting the working fluid with blood density and viscosity, a...