開催日時
2026年2月6日（金）午後2:30 〜 午後3:30
講師
Christos Markides 教授
（Department of Chemical Engineering, Imperial College London, U.K.）
演題
“Development and application of spatiotemporally-resolved multiphysics measurement methods to phase-change and reacting flows”
Abstract
Multiphase flows in the presence of heating, cooling, but also phase change and reactive phenomena are encountered in many important industrial processes and systems, including heat exchangers, condensers, evaporators, absorbers and reactors, amongst other, as well as in the natural environment across a wide range of scales. Despite the numerous experimental studies of these flows, the availability of spatiotemporally-resolved simultaneous information on the multiple underlying physical processes in different flows remains limited due to the challenges in performing such measurements.
Two-phase flows, specifically, present the experimentalist with a unique set of challenges, such as restricted (often sub-mm) fluid domains with moving and complex interfaces, across which phases have large refractive index changes, leading to optical distortions. Experimental techniques based on optical measurement principles can be applied, but further development is necessary for reliable data to be obtained. Once developed, these techniques can provide information with high spatiotemporal resolution on important scalar (e.g., temperature, concentration, phase) and vector (e.g., velocity) fields in relevant flows, as well as on interfacial characteristics and dynamics.
In this talk, we will present and discuss recent efforts to develop and apply a range of infrared, laser-based and other optical diagnostic techniques to multiphase flows with phase change and reaction. We will cover the deployment of simultaneous techniques for the generation of multiphysics and multiscale information, and discuss the specific challenges faced when attempting to perform such measurements. This information is enabling an increasingly complete fundamental understanding of related phenomena, and the improved design of relevant devices, technologies and systems.
座長
森 昌司 教授
（エネルギー変換科学ユニット）
言語
英語
