More than 700 participants have attended ICMF2019. After careful selection of papers, about 600 oral presentations were given according to the scientific program, including 5 plenary and 8 keynote lectures. In this conference, the topics cover very wide range of multiphase sciences, such as Computational and Experimental Methods for Multiphase Flows, Bubbly and Droplet Flows, Particle-laden Flows, Modelling of Multiphase Flows and Turbulence in Multiphase etc. The topics that Boiling, Condensation, Evaporation, Micro- and Nano-Scale Multiphase Flows and Multiphase Flow in Heat and Mass Transfer have also received great attentions. The topics covered in the conference were also diversified, associated with Biofluids, Environmental and Geophysical Flows, Fluid-Structure Interactions, Colloidal and Suspension Dynamics, Interfacial and Reactive Multiphase Flows, Granular Media, Fluidisation, Cavitation, Nucleation, Mixing, Collision, Agglomeration and Breakup and Instability. Plenary lectures, keynote talks, delivered by prominent and highly respected professionals selected for their distinctive vision of the future, have allowed the conference participants to focus on what lies ahead. The conference certainly stands for the highest level in these research areas. In addition to the selected oral presentations and selected best papers from the conference will be published in three prestigious journals, Special Issues of Flow, Turbulence and Combustion, Multiphase Science and Technology, Applied Thermal Engineering.

The other one, the 14th International Conference on Gas-Liquid and Gas-Liquid-Solid Reactor Engineering (GLS-14), was held in Guilin, China from 30th May to 3rd June 2019. The theme of GLS-14 is ‘Multiscale Structures in Multiphase Reactors: from Fundamentals to Applications’, which is perfectly coincide with our research group’s work. Around 300 papers were selected as oral presentations including 5 plenary and 8 keynote lectures. GLS-14 aims to exchange the latest findings in multiphase reactors and processes with emphasis on Conventional Multiphase Reactors, Process Intensification in Multiphase Reactors, Multiphase Computational & Multi-Scale Modelling, Gas- Liquid and Gas-Liquid-Solid Transport Phenomenon, Green Chemistry, Renewable Energy, Chemicals from Biomass and Issues Related to CO2, Measurement and Flow Visualization Techniques, Gas and Water Treatment, Pollution Abatement and Control, Microfluidic Reactors and Microsystems, Reaction Mechanism, Kinetics, New Chemical and Biochemical Routes, Industrial Applications, Multiphase Flow, Heat and Mass Transfer, Reactor Modelling, Bioreactors and Bioengineering etc.                

Professor Yang and 4 his group members including one assistant professor, one postdoc and two PhD students have orally presented most recently conducted research work in ICMF 2019 after the submissions were strictly selected by ICMF scientific committee. In GLS-14, two research papers were presented and one poster was exhibited. These two papers entitled ‘Modelling of Mass Transfer for Gas-Liquid Two-Phase Flow in Bubble Column Reactor with a Bubble Breakage Model Considering Bubble-Induced Turbulence’ and ‘Effect of Ultrasonic Intensification on Synthesis of Nano-sized Particles with an Impinging Jet Reactor’ were selected for publication in highly influential SCI journals, Chemical Engineering Journal and Powder Technology, respectively. Also, the exhibited poster has finally won the Best Poster Award after voting by all the experts and judged GLS scientific committee.

Generally, all the oral presentations delivered by our group have received overwhelming response from the audiences and they have indicated great interests on our research outcomes. Heat discussion about the details of theoretical modelling aspects of how to treat the effect of bubble wake induced turbulence on bubble breakage in bubbly flow in bubble column reactors, especially the application of turbulence power spectrum of -3 scaling law to the estimation of bubble breakage rate and modified bubble breakage kernel were conducted. Many researchers approached us for discussion on the new finding from our group ongoing research activities. In addition to the successful research presentations, Professor Yang also used the conference to renew the contact with many of his acquaintances in multiphase flow field in the world, such as Professor W. Wang (Institute of Process Engineering, Chinese Academy of Science, China) to discuss some of recent numerical modelling progress on mass transfer in two-phase flow, especially in three-phase flow in bubble columns and the issues of jointly training PhD students. Professor Yang also contacted many other well-known figures (Professor C. Sun, Tsinghua University; Professor Balachandar, University of Florida, USA; Professor M. Sommerfeld, Otto-von-Guericke-Universität Magdeburg, Germany; Dr D. Lucas, Helmholtz-Zentrum Dresdon-Rossendorf, Germany; Professor N.G. Deen, University of Twente, Netherlands, etc) to seek for further research collaboration and to discuss the theoretical and modelling issues that are commonly concerned, especially focusing on multiphase large eddy simulation and how to modify the bubble break-up and coalescence kernel model implemented in bubble column CFD modelling. Dissemination of the papers in ICMF2019 has further promoted recognition of our research activities in multiphase flows at University of Nottingham Ningbo China (UNNC) by other researchers throughout the international multiphase flow, heat and mass transfer community. On behalf of our research group’s students, I would like to thank the University of Nottingham Ningbo China and Professor Yang for giving us such opportunity to attend these international conferences and have abilities to discuss our work with experts in the world.  We believe ‘Nothing is impossible for a willing heart’ all along.