scholarly journals Static Pressure Measurement of High Enthalpy Flow in Arc-Heated Wind Tunnel.

2002 ◽  
Vol 50 (585) ◽  
pp. 426-428
Author(s):  
Takashi Matsuzaki ◽  
Kiyomichi Ishida ◽  
Takeshi Ito ◽  
Takuji Kurotaki ◽  
Yasuo Watanabe ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Pressure Measurement ◽  
Static Pressure ◽  
High Enthalpy

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

Optimisation of the acquisition points in wind tunnel pressure measurement

2010 ◽  
Vol 97 (2) ◽  
pp. 1-8
Author(s):  
Luca Facchin ◽  
Gianni Bartoli ◽  
Lorenzo Procino ◽  
Alessandra Borsani
Keyword(s):  
Wind Tunnel ◽  
Pressure Measurement

scholarly journals The Problem of Airflow Around Building Clusters in Different Configurations

2017 ◽  
Vol 64 (3) ◽  
pp. 401-418 ◽  
Author(s):  
Mateusz Jędrzejewski ◽  
Marta Poćwierz ◽  
Katarzyna Zielonko-Jung
Keyword(s):  
Numerical Simulation ◽  
Wind Tunnel ◽  
Pressure Measurement ◽  
Turbulence Models ◽  
Reynolds Stress Model ◽  
Complex Model ◽  
Stress Model ◽  
Qualitative Information ◽  
Pressure Coefficients ◽  
Rsm Model

Abstract In the paper, the authors discuss the construction of a model of an exemplary urban layout. Numerical simulation has been performed by means of a commercial software Fluent using two different turbulence models: the popular k-ε realizable one, and the Reynolds Stress Model (RSM), which is still being developed. The former is a 2-equations model, while the latter – is a RSM model – that consists of 7 equations. The studies have shown that, in this specific case, a more complex model of turbulence is not necessary. The results obtained with this model are not more accurate than the ones obtained using the RKE model. The model, scale 1:400, was tested in a wind tunnel. The pressure measurement near buildings, oil visualization and scour technique were undertaken and described accordingly. Measurements gave the quantitative and qualitative information describing the nature of the flow. Finally, the data were compared with the results of the experiments performed. The pressure coefficients resulting from the experiment were compared with the coefficients obtained from the numerical simulation. At the same time velocity maps and streamlines obtained from the calculations were combined with the results of the oil visualisation and scour technique.

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 Improved representation of destructive spacecraft re-entry from analysis of high enthalpy wind tunnel tests of spacecraft and equipment

2019 ◽  
Vol 164 ◽  
pp. 287-296 ◽  
Author(s):  
James C. Beck ◽  
Ian Holbrough ◽  
Thorn Schleutker ◽  
Ali Guelhan
Keyword(s):  
Wind Tunnel ◽  
Wind Tunnel Tests ◽  
High Enthalpy

Pitot and static pressure measurement and CFD simulation of a co-flowing steam jet

2018 ◽  
Vol 97 ◽  
pp. 36-47
Author(s):  
Kavous Ariafar ◽  
Thomas Cochrane ◽  
Ray Malpress ◽  
David Buttsworth
Keyword(s):  
Pressure Measurement ◽  
Static Pressure ◽  
Cfd Simulation
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