He is currently Full Professor and Coordinator of Mechanical Engineering Graduate Program at São Carlos School of Engineering, University of São Paulo (USP), Brazil. He received his BS, MS and Doctoral degrees in Mechanical Engineering from the University of São Paulo. He held postdoctoral positions at the University of Illinois at Urbana?Champaign, Swiss Federal Institute of Technology in Lausanne (EPFL) and Universidade da Coruña. His research interests cover nanofluids, pool boiling, falling-film evaporation and condensation, two-phase flow, flow induced vibration, flow boiling and condensation for external and internal flows, heat transfer enhancement, heat exchangers, phase-change in microchannels and solar energy. Prof. Ribatski is Brazilian Delegate to the Assembly for International Heat Transfer Conferences since 2017. He is Associate Editor of the Experimental Thermal and Fluid Science and member of the Editorial board of International Journal of Multiphase Flow and International Journal of Microscale and Nanoscale Thermal and Fluid Transport. He is member and president of the Brazilian Society of Mechanical Sciences and Engineering. He is member of Assembly of World Conferences on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Virtual Institute of Two-Phase Flow and Heat Transfer, Scientific Council of the International Centre for Heat and Mass Transfer (ICHMT), and corresponding member of The ICeM NEWSLETTER / The Japanese Society for Multiphase Flow. The Heat Transfer and Research Group at EESC-USP, under guidance of Prof. Ribatski, is recognized worldwide as one of leading groups in Brazil performing studies on two-phase flow and flow boiling. He has presented 8 keynote lectures and taken part in the scientific committee of several International Conferences. Dr. Ribatski has over 70 refereed journal publications, 6 book chapters, and over 100 refereed papers in conferences. (Source: Lattes Curriculum)
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The development of new technologies such as 3D processors, fuel cells automobile batteries, high-concentration photovoltaics, and microreactors is facing the challenge of dissipating extremely high heat fluxes under confined conditions. Phase change processes under confined conditions such as flow boiling in microchannels seem a promising technology to attend to such demands. However, sev…
The present proposal deals with experimental evaluation and modeling of transport phenomena typical of emerging technologies in the area of energy conversion and storage involving phase change and/or supercritical flows. These emerging technologies are related to thermohydraulic analysis of heat transfer processes including flows under supercritical thermodynamic conditions in nuclear rea…
It is a fact that the analyzes of flow images is necessary to study quantitatively and qualitatively two-phase flows. In this context, the general objective of the present proposal is the acquisition of a high-speed camera to study fundamentals and applications involving two-phase flows, focusing on processes involving liquid-vapor phase change. The specific objectives are the following:…
(Only some records are available in English at this moment)
Solar irradiation is a source of renewable energy and its use depends on the conversion of solar irradiation into heat and/or electricity. In the last two decades, the economic and environmental importance of incorporating solar energy to the energy matrix of most of countries have drastically increased. To convert solar irradiation to usable forms of energy, heat exchangers are necessary…
(Only some records are available in English at this moment)
In general, most applications involving plate-type heat exchangers are based on flow of two fluids as liquid. However, recently, phase change processes in this type of heat exchangers have become common. In such applications, fluid mal-distribution effects to the heat exchanger performance becomes even more relevant than for singlephase fluid flow. These effects depend on the two-phase fl…
The present proposal concerns a theoretical and experimental investigation of the velocity and pressure fields for axial single-phase flow and dispersed bubbles flow in a vertical tube bundle, considering a typical geometry of a PWR reactor (Pressure Water Reactor). The experimental study will be conducted in a hydraulic channel available at the Research Group on Heat Transfer at EESC-USP…
A better understanding of the heat transfer mechanisms during micro-scale flow boiling is fundamental for the development of disruptive technologies which require the dissipation of high heat fluxes (values up to 3MW/m2 are expected in a close future according to Surtaev et al. (2021)). The combination of microchannels and phase change processes allows high heat transfer rates, minimizing…
This research proposal is within a context of a broad study currently in execution at the Heat Transfer Research Group of the São Carlos School of Engineering, USP, which is focused on the study of two-phase flow and flow boiling at temperatures close to the thermodynamic critical point. Investigations concerning two-phase flow characterization in both macro and microscale were extensivel…
This study is included in a broad research project under development at the Thermal Hydraulics Laboratory at the University of Wisconsin-Madison focused on the increase of the overall efficiency of aircrafts by recovering high-temperature waste heat from the turbines. In this context, the present research involves the application of supercritical fluids as a heat transport medium. The pre…
In vapor-liquid flows, the phase distribution along the cross section varies according to the operational conditions. Such distributions present typical geometries, named in literature as flow patterns, which significantly affect the heat transfer and pressure drop performances. The stratified-wavy and mist flows are among the flow patterns in horizontal ducts occurring in heat exchangers…
(Only some records are available in English at this moment)
Recent studies have proved that heat transfer during nucleate boiling processes is intrinsically related to the fluid motion near to the surface. Bubbles growth and detachment act as stirring agents of the liquid phase. Therefore, a better understanding of the bubble growth, detachment and its flow behavior within the liquid is necessary to model heat transfer under boiling conditions. It…
The heat exchanger performance and the vibration occurrence in rod bundles issignificantly influenced by fluid dynamics and turbulence parameters. Understanding theflow characteristics, especially in the presence of spacer grids and secondary flows, iscrucial for comprehending the underlying phenomena. In this proposal, the goal is toemploy the Spatial Filter Velocimetry technique with tw…
The phase-change process in microchannels is a promising approach to achieve high heat transfer rates for electronic device cooling. This strategy of heat transfer augmentation minimizes the need for space, and reduces the costs of material and working fluid. However, the thermo-hydraulic behavior of microchannels under flow boiling is not yet completely understood because of the aspects …
(Only some records are available in English at this moment)
| 4 / 4 | Ongoing grants |
| 10 / 7 | Completed research grants |
| 3 / 3 | Ongoing scholarships in Brazil |
| 35 / 24 | Completed scholarships in Brazil |
| 9 / 9 | Completed scholarships abroad |
| 61 / 47 | All research grants and scholarships |
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CV Lattes
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