CFD analysis of air flow through the nozzle of circulation wind tunnel

Havranek, Vit; Rozehnal, Dalibor

doi:10.1109/miltechs.2015.7153729

Cited by 3 publications

(2 citation statements)

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“…To the best of our knowledge, although there have been numerous investigations on fluid passing through a converging nozzle (or Laval nozzle) [16][17][18][19], few concern the synergy quenching effect of the converging nozzle (or Laval nozzle) combined with a water-cooling tube. Therefore, the synergy quenching mechanism is also analyzed here.…”

Section: Converging Nozzle Straight Nozzlementioning

confidence: 99%

Understanding CO₂ decomposition by thermal plasma with supersonic expansion quench

Shen

Ran

Jiao

et al. 2018

Plasma Sci. Technol.

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CO 2 pyrolysis by thermal plasma was investigated, and a high conversion rate of 33% and energy efficiency of 17% were obtained. The high performance benefited from a novel quenching method, which synergizes the converging nozzle and cooling tube. To understand the synergy effect, a computational fluid dynamics simulation was carried out. A quick quenching rate of 10 7 K s −1 could be expected when the pyrolysis gas temperature decreased from more than 3000 to 1000 K. According to the simulation results, the quenching mechanism was discussed as follows: first, the compressible fluid was adiabatically expanded in the converging nozzle and accelerated to sonic speed, and parts of the heat energy converted to convective kinetic energy; second, the sonic fluid jet into the cooling tube formed a strong eddy, which greatly enhanced the heat transfer between the inverse-flowing fluid and cooling tube. These two mechanisms ensure a quick quenching to prevent the reverse reaction of CO 2 pyrolysis gas when it flows out from the thermal plasma reactor.

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Section: Converging Nozzle Straight Nozzlementioning

confidence: 99%

Understanding CO₂ decomposition by thermal plasma with supersonic expansion quench

Shen

Ran

Jiao

et al. 2018

Plasma Sci. Technol.

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“…Wind tunnel geometry with marked sections [3]. In the right bottom corner is shown the orientation of axes in the MS. X-axis is in the direction of wind flow.…”

Section: Figmentioning

confidence: 99%

Pressure field in measurement section of wind tunnel

Hnidka

Rozehnal

2017

MATEC Web Conf.

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Abstract. The University of Defence in Brno has a new low-speed wind tunnel. In order to confirm the quality of the wind inside of the measurement section, several measurements of the dynamic pressure have been performed with the Pitot-static tube. The pressure fields are then analysed and quality of the field is evaluated. Measurement of a pressure drop on the body of a standing helicopter was conducted.

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An electromechanical approach to improve the output voltage of a DC wind turbine in low wind speed areas

Islam

parvez

Rahman

2017

2017 International Conference on Electrical, Computer and Communication Engineering (ECCE)

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CFD analysis of air flow through the nozzle of circulation wind tunnel

Cited by 3 publications

References 0 publications

Understanding CO₂ decomposition by thermal plasma with supersonic expansion quench

Understanding CO₂ decomposition by thermal plasma with supersonic expansion quench

Pressure field in measurement section of wind tunnel

An electromechanical approach to improve the output voltage of a DC wind turbine in low wind speed areas

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CFD analysis of air flow through the nozzle of circulation wind tunnel

Cited by 3 publications

References 0 publications

Understanding CO2 decomposition by thermal plasma with supersonic expansion quench

Understanding CO2 decomposition by thermal plasma with supersonic expansion quench

Pressure field in measurement section of wind tunnel

An electromechanical approach to improve the output voltage of a DC wind turbine in low wind speed areas

Contact Info

Product

Resources

About

Understanding CO₂ decomposition by thermal plasma with supersonic expansion quench

Understanding CO₂ decomposition by thermal plasma with supersonic expansion quench