Mathematics and Physics Unit “Multiscale Analysis, Modelling and Simulation”, Top Global University ProjectWaseda University

Waseda University Top Global University Project Final Symposium Report

Symposium Title

International Workshop on Multiphase Flows: Analysis, Modelling and Numerics

Symposium Details

• Date and Time:   4 December 2023 – 6 December 2023
• Venue:                  Room 102, Green Computing Systems Research Organization, Bldg 40, Waseda University
• Language:            English
• Speakers:
  Tayfun E. Tezduyar (Rice University and Waseda University)
  Yuto Otoguro (Tokyo University of Science)
  Jinhui Yan (University of Illinois Urbana-Champaign)
  Artem Korobenko (University of Calgary)
  John A. Evans (University of Colorado Boulder)
  Reika Fukuizumi (Waseda University)
  Takahito Kashiwabara (The University of Tokyo)
  Ionut Danaila (Universite de Rouen Normandie)
  Karel Svadlenka (Tokyo Metropolitan University)
  Yasutoshi Taniguchi (Waseda University)
  Kuo Jou Chun (Waseda University)
  Shohei Mikawa (Waseda University)
  Takahiro Ushioku (Waseda University)
  Zhaojing Xu (Waseda University)
  Takahiro Nakamura (Waseda University)
  Masahiro Adachi (Waseda University)

Participation Details

• Number:                      57 (in-person) + 11 (Zoom)
• Countries/Regions:  United States, Canada, France, Japan
• Organizations:          Universities

Workshop website

Purpose of the Symposium

The Top Global University Project, which will end in FY2023, is holding a series of symposia to highlight the successful outcomes to date in the seven model units. This symposium was held to showcase the achievements of the ‘’Multiscale Analysis Modelling and Simulation’’ Unit under the University’s Waseda Goes Global Plan, an initiative funded by the Japanese Ministry of Education, Culture Sports, Science, and Technology’s (MEXT) Top Global University Project. The Multiscale Analysis Modelling and Simulation Unit planned to hold two international workshops to present the final results, and this workshop was the second in the series

This workshop has been held continuously since 2015 as one of the main activities of the Multiscale Analysis, Modelling and Simulation unit. Detail information including records of other workshops, can be found on the achievements page here.

Symposium Report

The symposium was held from Dec. 4th to Dec. 6th, 2023. In addition to researchers from Japan, those from the United States, Canada, and France came to Waseda to give presentations on their research in Multiphase Flows.
On the first day, there were mini-courses and lectures by four researchers, and short presentations by four students. Professor Tayfun E. Tezduyar, a professor at Rice University and joint appointment professor at Waseda University, gave a lecture on stabilized methods and space–time framework in computation of flows with moving boundaries and interfaces, including free-surface flows. Professor Yuto Otoguro at Tokyo University of Science gave a lecture on the space–time and isogeometric analysis (IGA) of flows with complex geometries. Professor Junhui Yan of the University of Illinois Urbana-Champaign gave a lecture on free surface problems with IGA and fluid-structure interaction (FSI) analysis of offshore floating wind turbines. Professor Reika Fukuizumi from Waseda University gave a lecture on Bose-Einstein condensation from the field of quantum mechanics.

Afterward, presentations by students at Waseda University were given. Yasutoshi Taniguchi gave a presentation on a formulation of the thickness of shell, Takahiro Ushioku cloud cavitation through experiments and numerical analysis, Shohei Mikawa on IGA -based on parachute flow analysis with an adaptive mesh refinement method, and Masahiro Adachi on non-trivial solutions and bifurcation structures in the steady state of the Lotka-Volterra cooperative model.

On the second day, there were mini-courses and lectures by four researchers, and short presentations by three students. Professor Artem Korobenko at the University of Calgary gave a lecture on multiscale method for cavitation analysis. In the next session, he gave a presentation on free-surface and cavitation analysis. Professor John A. Evans of the University of Colorado Boulder gave an introductory lecture on the preservation and robustness of the mathematical structure of the Navier–Stokes equations in computational methods. Professor Takahito Kashiwabara from the University of Tokyo gave a lecture on errors caused in time discretization when using the discontinuous Galerkin method and the cubic interpolated pseudo-particle scheme.

Afterwards, presentations by Waseda students were given. Takahiro Nakamura gave a presentation on bifurcation in partial differential equations, JouChun Kuo on maximum regularity of compressible Navier–Stokes equations, and Zhaojing Xu on flow analysis of tires with road contact and deformation.

On the third and final day, lectures were given by five researchers. Professor Tezduyar gave a lecture on moving-boundary flow computation with boundary layer and contact representation. Professor Evans gave a lecture on structure-preserving multiscale modeling, local refinement, and multilevel solvers as the applied part of his lectures. Professor Yan gave a lecture on a formulation of thermal multiphase flow with the mixed interface-tracking/interface-capturing method and the analysis of metal melting by laser. Professor Ionut Danaila of the Universite de Rouen Normandie gave a lecture on solid-liquid analysis using the Boussinesq approximated Navier–Stokes equation and enthalpy model. Professor Karel Svadlenka from Tokyo Metropolitan University gave a lecture on interfacial network motion using the Merriman–Bence–Osher (MBO) algorithm.
Throughout the three days, a long volume of research results were presented, with participants having many research discussions and short but helpful Q&A sessions.