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Medhat Sharabi

Researcher at University of Pisa

Publications -  14
Citations -  558

Medhat Sharabi is an academic researcher from University of Pisa. The author has contributed to research in topics: Supercritical fluid & Heat transfer. The author has an hindex of 10, co-authored 14 publications receiving 496 citations. Previous affiliations of Medhat Sharabi include Paul Scherrer Institute.

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Dimensionless parameters in stability analysis of heated channels with fluids at supercritical pressures

TL;DR: In this paper, the authors proposed dimensionless parameters for the analysis of stability in heated channels with supercritical fluids, based on the classical phase change and sub-cooling numbers adopted in the case of boiling channels, proposing a novel formulation making use of fluid properties at the pseudocritical temperature as a function of pressure.
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Prediction of turbulent convective heat transfer to a fluid at supercritical pressure in square and triangular channels

TL;DR: In this paper, the authors present results obtained on the prediction of three-dimensional turbulent heat transfer to CO 2 at supercritical pressure, flowing upward through heated vertical passages of non-circular cross-section.
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Discussion of heat transfer phenomena in fluids at supercritical pressure with the aid of CFD models

TL;DR: In this article, the authors discuss heat transfer enhancement and deterioration phenomena observed in experimental data for fluids at supercritical pressure and apply various CFD turbulence models in predicting the observed phenomena.
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Prediction of unstable behaviour in a heated channel with water at supercritical pressure by CFD models

TL;DR: In this article, the results of the application of computational fluid dynamics in the prediction of unstable behavior in heated channels containing supercritical fluids are presented, where constant pressure drop boundary conditions are imposed across the flow duct and heating power is slowly increased up to the point at which inlet and outlet flow rates are seen to oscillate, with a pattern typical of density wave instabilities.

Results of 4-equation turbulence models in the prediction of heat transfer to supercritical pressure fluids

TL;DR: In this article, the results obtained in the assessment of different turbulence models including low-Reynolds k-α and k-β equations, in the attempt to improve the prediction by RANS techniques of heat transfer to fluids at supercritical pressure are presented.