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2017.08.23

【Awards and Commendations】Yuki Mori, Major MSc student, Department of Nuclear Engineering and Management, won the Best Presentation Award at the Multiphase Symposium 2017.

On 20th August 2017, Yuki Mori, Major MSc student, Department of Nuclear Engineering and Management, won the Best Presentation Award at the Multiphase Symposium 2017. It was given for the superior presentation at poster and lightning talk at this symposium.

Fluidized bed is an important machine in the field of chemical engineering. Because it shows complex phenomena, numerical simulations are often performed. DEM-CFD method, one of the Eulerian-Lagrangian approach, is often used. Although this method is well established, it has a couple of problem, such as substantial limit of number of calculated particles, and difficulty of calculating gas-solid flow in complex shaped wall stably. For these problems, numerical simulation of engineering-scale fluidized bed was very difficult. Then, to solve these problems, we developed new numerical simulation method, called DEM-CGM-CFD-SDF-IBM method. In this method, coarse grain model(CGM) is introduced. In this model, a group of particles are represented by a coarse grain particle, then this model enabled us to use enormous number of original particles. Besides, signed distance function(SDF) and Immersed boundary method(IBM) are also introduced for calculated boundary wall of solid and fluid phase. In order to validate developed method, we performed numerical simulation and experiment of fluidized bed under comparable conditions.

 

It is my great honor to win this award. I really thank Prof. Mikio Sakai for his excellent supervision, and I also thank all members of my laboratory. I will keep researching hard and try to improve our researches.