SEMINAR – Prof. Dr. VAN-TU NGUYEN (PUSAN NATIONAL UNIVERSITY)

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Short Biography

Prof. Dr. Van-Tu Nguyen is currently a Research Professor – Principal Investigator – Advisor at the School of Mechanical Engineering at Pusan National University (PNU) in Korea. He completed his Ms & PhD degrees in Mechanical Engineering from PNU between 2011 and 2017. Prior to that, he obtained his BE degree in Mechanical Engineering from the University of Engineering and Technology, Hanoi National University, in Vietnam, during the period of 2005-2010. Dr. Nguyen’s expertise lies in the field of computational fluid mechanics (CFM)-Fluid Dynamics with a specific focus on scientific computing in Mechanics.

Statement:

Prof. Dr. Van-Tu Nguyen is currently a Research Professor – Principal Investigator – Advisor at the School of Mechanical Engineering at Pusan National University (PNU) in Korea. He completed my Ms & PhD degrees in Mechanical Engineering from PNU between 2011 and 2017. Prior to that, He obtained his BE degree in Mechanical Engineering from the University of Engineering and Technology, Hanoi National University, in Vietnam, during the period of 2005-2010. His expertise lies in the field of computational fluid mechanics (CFM)/Fluid Dynamics with a specific focus on scientific computing in Mechanics.

Throughout my career, He have dedicated my research efforts to the development and utilization of algorithms for modeling various aspects of fluid mechanics and industrial/engineering systems. his recent works predominantly revolve around multiphase/interfacial (turbulent) flows, compressible flows with shock waves, free surface flows, and cavitation bubble dynamics. He has extensively worked on building numerical coding programs tailored to these applications within the realm of fluid mechanics. his contributions have been published in over 70+ international journal SCI (E)/conference papers (H-index 15, i10-index 20, Citations 590).

His scholarly reputation is well-established through his involvement as a Principal Investigator (PI)/CoPI and key participant in 8 research projects (2020-2027) funded by the National Research Fund of Korea (NRF) Basic Science and Research Grant & Award. Furthermore, He have been recognized as an expert in my field, serving as Guest Editor, Editorial Board Member, and reviewer for various international publications and being invited as a speaker, Section Chairman, and Committee member for various international conferences:

  • Guest Editor of a special issue in Fluids (Journal indexed in Scopus, ESCI – Web of Science, IF=1.9).
  • Editorial Board Member: International Journal of Mechanical Engineering and Applications (IJMEA),
  • Editorial Board Member: Subsea Engineering and Technology,
  • Publicity chair of International Conference on Mechanical Engineering and Applied Composite Materials (MEACM2023).
  • Contribute as a Reviewer of 15+ SCIE
  • Scientific Organizing committee member of the Global Meet on Aerospace and Aeronautical
  • Section Chair and invited speaker of three conferences: Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering (MCM’22), Prague, Czech Republic ,July 31, 2022 – August 02, 2022; 13th Asian Computational Fluid Dynamics Conference, Oct 16-

19, 2022, JeJu Island, Korea; The Second International Conference On Mechanics, Oct. 15th- 18th 2018, Silks Place, Yilan, Taiwan.

  • Presenter/ author of 40 + international/domestic conference

 

Summary of Presentations

Contents:

1.      Introduction:

 Research group of Computational Fluid Mechanics, School of Mechanical Engineering, Pusan National

  • Introduction of International Network program/ Research and Development Grants

2.      Presentation of Recent and Current studies

 Tittle: Modern Numerical Methods for Incompressible – Compressible Multiphase flows: Free Surface -Shockwaves – Cavitation – Bubble – High Speed

The multiphase flow is a vast topic in diverse fields of science and technology. Water entry impact forces, supercavitation, and underwater explosion are important topics for various engineering problems. The development of accurate and efficient numerical algorithms for the multi-phase flow simulations is still receiving increasing attention, particularly in engineering applications. In our work, we have developed numerical models for 3D simulation of complex, free surface, water impact flows and compressible multiphase flows. The physical systems are formulated in a hyperbolic vector form in a curvilinear coordinate system and solved using a monotonic upstream-centered scheme for conservation laws (MUSCL)/Godunov-type finite volume scheme. The dual-time preconditioning methods are applied to improve computational productivity. Compressive MUSCL limiters, VOF/PLIC interface tracking method, and interface sharpening method combined with the high order finite volume approach are able to result in a sharp interface solution. The numerical models are capable of predicting complex, arbitrary, free surface, water impact flows, natural and ventilated supercavitation, underwater explosion with shock waves that occur in geometrically complex domains. Several sets of example computations concerning important physical characteristics of those problems and the use of Chimera grids and 6DOF motions model confirm that the numerical methods are promising for extensive applications to accurate and efficient simulations of both simple and full 3D multiphase flows in practical problems.

Keywords: Multiphase flows, homogeneous equilibrium mixture model, Seven equation, Water impact, supercavitation, underwater explosion