Generation and Characterization of High Enthalpy CO2 Flow by Laser Driven Plasma Wind Tunnel

2013 ◽  
Author(s):  
Makoto Matsui ◽  
Shingo Yoneda ◽  
Satoshi Nomura ◽  
Yoshiki Yamagiwa ◽  
Kimiya Komurasaki ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
High Enthalpy ◽  
Co2 Flow

Characterization of plenum spectra in an arcjet wind tunnel

10.2514/3.902 ◽  
1997 ◽  
Vol 11 ◽  
pp. 339-345
Author(s):  
James P. Sawyer ◽  
S. Rao ◽  
Mohammad A. Rob ◽  
Larry H. Mack ◽  
Sivaram Arepalli ◽  
...  
Keyword(s):  
Wind Tunnel

Characterization of Radiative Heating Anomaly in High Enthalpy Shock Tunnels

2021 ◽  
Author(s):  
Brett A. Cruden ◽  
Chun Y. Tang ◽  
Joseph Olejniczak ◽  
Adam J. Amar ◽  
Hideyuki Tanno
Keyword(s):  
Radiative Heating ◽  
High Enthalpy ◽  
Shock Tunnels ◽  
Heating Anomaly

Characterization of wind-induced pressure on membrane roofs based on full-scale wind tunnel testing

2021 ◽  
Vol 235 ◽  
pp. 112101
Author(s):  
Johnny Estephan ◽  
Changda Feng ◽  
Arindam Gan Chowdhury ◽  
Mauricio Chavez ◽  
Appupillai Baskaran ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Full Scale ◽  
Wind Tunnel Testing ◽  
Tunnel Testing

scholarly journals On the sodium enhancement in spectra of slow meteors and the origin of Na-rich meteoroids

2020 ◽  
Author(s):  
Pavol Matlovič ◽  
Juraj Tóth ◽  
Leonard Kornoš ◽  
Stefan Loehle
Keyword(s):  
High Resolution ◽  
Wind Tunnel ◽  
Laboratory Experiment ◽  
High Enthalpy ◽  
Spectral Profiles

<p>Distinct Na-enhanced and Na-rich meteor spectra have been previously identified by different authors, but the explanation of their origin and interpretation of the corresponding meteoroid composition was lacking. To study this population, we utilized meteor spectra observations of the global AMOS network and high-resolution Echelle spectra of ablating meteorite samples obtained in a high-enthalpy plasma wind tunnel at the IRS facilities in Stuttgart. It was found that most Na-enhanced and Na-rich spectra can be explained by the effect of low meteor speed related to low ablation temperatures and generally do not reflect real meteoroid composition. Spectra obtained by the laboratory experiment simulating low meteor speeds show corresponding Na-rich spectral profiles irrespectively of the meteorite composition. For more clarity in the classification of Na-enhanced and Na-rich meteoroids, we propose new speed-dependent boundaries between the spectral classes. Based on this classification, we reveal real compositional Na enhancement in five cometary meteoroids including two Perseids, an

scholarly journals Characterization of a new open jet wind tunnel to optimize and test vertical axis wind turbines

2017 ◽  
Vol 9 (3) ◽  
pp. 033302 ◽  
Author(s):  
Silvana Tourn ◽  
Jordi Pallarès ◽  
Ildefonso Cuesta ◽  
Uwe Schmidt Paulsen
Keyword(s):  
Wind Tunnel ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbines

Acoustic Characterization of Glaze and Rime Ice Structures on an Oscillating Airfoil via Fully Unsteady Simulations

2020 ◽  
Vol 65 (4) ◽  
pp. 1-12
Author(s):  
Myles Morelli ◽  
Beckett Y. Zhou ◽  
Alberto Guardone
Keyword(s):  
Wind Tunnel ◽  
Computational Modeling ◽  
Low Cost ◽  
Two Dimensional ◽  
Ice Accretion ◽  
Experimental Database ◽  
Acoustic Characterization ◽  
Ice Detection ◽  
Detection Technologies

The development of low-cost and simple technologies to improve pilot awareness of icing environments is crucial to improve the safety of rotorcraft, and especially those with limited icing clearance which are admittedly operating within icing environments without full icing clearance. An acoustic characterization of glaze and rime ice structures is hereby introduced to begin to quantify different ice shape noise signatures which directly transcend from the iced performance characteristics to develop acoustic ice detection technologies. The feasibility of the detection technique is assessed for fully unsteady simulations of ice accretion on an oscillating, two-dimensional airfoil. This work focuses on the computational modeling of the experimental database of a rotor airfoil with pitching motion during icing conditions from the NASA Glenn Icing Research Wind Tunnel and computing the resultant noise signals and analyzing their topology.

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