Abstract:
Turbulence produced in low temperature helium gas flowing over arrays of rectangular- and triangular-shaped blunt obstacles is investigated experimentally. The set-up allows both low fluctuation rates (down to 8%), and high microscale Reynolds numbers, (up to 1 150). The forced Kolmogorov equation is found to apply accurately. Similar to another flow configuration (counter rotating flow case [1]), the analysis of the flatness factor evolution with the Reynolds number reveals a transitional behavior around 650.
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Received 26 August 1999 and Received in final form 28 August 2000
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Willaime, H., Maurer, J., Moisy, F. et al. Turbulence over arrays of obstacles in low temperature helium gas. Eur. Phys. J. B 18, 363–369 (2000). https://doi.org/10.1007/s100510070069
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DOI: https://doi.org/10.1007/s100510070069