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J.R.F. Guedes de Carvalho

Researcher at Faculdade de Engenharia da Universidade do Porto

Publications -  22
Citations -  487

J.R.F. Guedes de Carvalho is an academic researcher from Faculdade de Engenharia da Universidade do Porto. The author has contributed to research in topics: Mass transfer & Packed bed. The author has an hindex of 12, co-authored 22 publications receiving 465 citations. Previous affiliations of J.R.F. Guedes de Carvalho include University of Porto.

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An experimental study of the wake of gas slugs rising in liquids

TL;DR: In this paper, a photographic study of the wakes of slugs rising in tubes of 19 mm and 52 mm internal diameter is presented, where the dependence of the flow pattern in the wake upon the Reynolds number of the rising slug, R, is established for different slug lengths.
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Effect of fluid properties on dispersion in flow through packed beds

TL;DR: In this article, the effect of liquid properties on axial dispersion in packed beds was investigated and the experimental data used to test available correlations for predicting DL show that they are inaccurate over considerable ranges of the variables.
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Overall map and correlation of dispersion data for flow through granular packed beds

TL;DR: In this paper, the authors measured the transverse and longitudinality of dispersion coefficients for liquid flow through granular packedbed s. The data obtained, together with data from other sources, both for gas and liquid flow, are reported in plots of Pe T vs Pe m and Pe L vs Pe M, in order to stress the influence of Sc on dispersion and elucidate the difference between liquid and gas behaviour.
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Measurement of the Coefficient of Transverse Dispersion in Flow Through Packed Beds for a Wide Range of Values of the Schmidt Number

TL;DR: In this article, the authors measured the transverse dispersion coefficient of 2-naphthol/water over a range of temperatures between 293K and 373K, which corresponds to a range values of viscosity (μ) between 2.83×10−4 Ns/m2 and 1.01×10 −3 Ns /m2, and molecular diffusion coefficient (Dm) between 1.03× 10−9 m2/s and 5.49× 10 −9 m 2/s.