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Opposition flow control for reducing skin-friction drag of a turbulent boundary layer

Autor: Dacome, Giulio, Mörsch, Robin, Kotsonis, Marios, Baars, Woutijn J.

This work explores the dynamic response of a turbulent boundary layer to large-scale reactive opposition control, at a friction Reynolds number of $Re_\tau \approx 2\,240$. A hot-film is employed as the input sensor, capturing large-scale fluctuation

Externí odkaz: http://arxiv.org/abs/2309.13929

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Inner-scaled Helmholtz resonators with grazing turbulent boundary layer flow

Autor: Dacome, Giulio, Siebols, Renko, Baars, Woutijn J.

Response details are presented of small-scale Helmholtz resonators excited by grazing turbulent boundary layer flow. A particular focus lies on scaling of the resonance, in relation to the spatio-temporal characteristics of the near-wall velocity and

Externí odkaz: http://arxiv.org/abs/2308.07776

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Reynolds-number scaling of wall-pressure--velocity correlations in wall-bounded turbulence

Autor: Baars, Woutijn J., Dacome, Giulio, Lee, Myoungkyu

Wall-pressure fluctuations are a practically robust input for real-time control systems aimed at modifying wall-bounded turbulence. The scaling behaviour of the wall-pressure--velocity coupling requires investigation to properly design a controller w

Externí odkaz: http://arxiv.org/abs/2307.06449

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Akademický článek

Sweeteners from Pre-Treated Stevia Leaves: Evaluation of The Effect of Extraction Cycles by Semi-Continuous Percolation

Autor: Jéssica Maria Ferreira Almeida Do Couto, Pauline Godoi Silva, Cecília Edna Mareze-Costa, Antônio Sérgio Dacome, Paula Gimenes Milani Fernandes, Silvio Claudio Da Costa

Publikováno v: Chemical Engineering Transactions, Vol 111 (2024)

Stevia rebaudiana could be used to makes to produce nutraceuticals and functional foods instead of sucrose and artificial sweeteners. Due to the nutritional and technological advantages of sucrose, innovative approaches for extracting sweeteners from

Externí odkaz: https://doaj.org/article/d258cc93cbe04c1cb55ff2f24d0a00dd