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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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:…
This research proposal had the objective of acquiring an infrared camera to investigate fundamental aspects and applications involving processes of heat transfer with phase change. The specific objectives of this proposal are the following: (1) Application of infrared thermography to the study of the physical mechanisms during convective boiling in microchannels and the development of hig…
(Only some records are available in English at this moment)
This proposal concerns a grant to Professor Timothy A. Shedd to act as researcher and guest lecturer at the Department of Mechanical Engineering of EESC-USP for a period of 10 months during his sabbatical from the University of Wisconsin. Professor Shedd received his PhD from the University of Illinois at Urbana Champaign and is currently Associate Professor at the University of Wisconsin…
(Only some records are available in English at this moment)
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…
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…
The Organic Rankine Cycle has potential of application in systems involving heat rejection remaining from processes and also in solar energy harvesting. As well as in heat pumps, in certain applications, the Organic Rankine Cycle may be subjected to evaporation pressures near the thermodynamic critical point. However, despite the growing interest in such applications, studies involving pr…
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…
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…
The development of high efficient compact heat exchangers is crucial to enable the use of solar power concentration to increase the power generation capacity and efficiency of solar energy systems. The phase-change process in microchannels can be a promising approach for solar energy systems cooling since it enables high heat transfer rates, which minimizes the need for space, and reduces…
(Only some records are available in English at this moment)
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 …
The liquid film thickness (LFT) is a key parameter to characterize annular flows during flow boiling and condensation. Heat transfer rates, pressure drop and wall dryout are highly influenced by liquid film characteristics; thus, this parameter must be correctly estimated for a solid and reliable design of heat exchangers, heat sinks and thermal management devices based on phase-change pr…
There is a predominance of studies in literature involving flow boiling of refrigerants at low pressures, characteristics of refrigeration and air conditioning applications. Due to the growing interest in organic Rankine cycles (ORCs), as well as in circulating fluidized bed boilers and supercritical water reactors, studies on high pressures have intensified in recent years. Fluids thermo…
The ability to absorb or dissipate heat in restricted spaces is a main issue to the development of technology in various fields. For instance, the heat absorption by fluids in mini-or microchannels based solar collectors is a promising way of clean and renewable energy use. Many studies endorse the great potential of flow boiling based devices as heat spreaders or absorbers, especially du…
The estimation of the liquid film thickness (LFT) during annular flows is a critical issue in heat transfer processes involving two-phase flows, since the heat conduction through the liquid film is the main thermal resistance for both flow boiling and convective condensation. Moreover, the frictional pressure drop is also associated to the liquid film characteristics. Therefore, the corre…
(Only some records are available in English at this moment)
| 4 / 4 | Ongoing research grants |
| 7 / 4 | Completed research grants |
| 3 / 3 | Ongoing scholarships in Brazil |
| 33 / 22 | Completed scholarships in Brazil |
| 2 / 2 | Ongoing scholarships abroad |
| 5 / 5 | Completed scholarships abroad |
| 55 / 41 | All research grants and scholarships |
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CV Lattes
ORCID