Integrated Simulation System for Soft Matters

Speaker: Taku Ozawa and Hiroya Nitta, JSOL Corporation
October 25, 2018

Presentation

Abstract

Soft matter, such as resins, rubber materials, film, adhesive, and so on, has a multiscale structure. Computer simulation is an effective tool for understanding the mechanism of how the physical properties are exhibited. However, it is necessary to properly use the methods for each scale. The integrated simulation system for soft matter, OCTA and J-OCTA, include useful modeling methods and simulation engines/solvers to perform multi-scale simulation.

OCTA and J-OCTA are based on several physical models and theories. The models include the six methods, Density Functional Theory for electron state, Molecular Dynamics for the dynamics of molecules, Reptation Dynamics for entangled polymers, Mean Field method for the polymer phase separation, Continuum Mechanics for the deformation of elastic materials, Smoothed Profile Method for the colloid dispersion, in order from smallest scale to largest scale.

In this seminar, the simulations for soft matter will be introduced through the functions of OCTA and J-OCTA, the engines and some case studies mainly in Japanese industries.

Biography

Taku Ozawa received his Ph.D. in engineering from Keio University in 2005. In 1999, he entered Japan Research Institute, Limited (previous name of JSOL Corporation). Since then, he has researched and developed the computer simulation software in the materials science field.

Hiroya Nitta has a master’s degree in science from Osaka University. He has 8 years of experience as a simulation engineer at a manufacturing company, and currently works as a developer of J-OCTA. His research interests are quantum chemistry, molecular dynamics, physical chemistry, and mathematical engineering.

Seminar Participation

Attending In Person

For select seminars, you may wish to attend in-person if you are in the vicinity of NASA Ames Research Center. These AMS seminars are held in Building N258 in Room 127, just off the front lobby. Sessions available to attend in-person will be indicated in the announcement information. In-person participants without NASA badges will need a valid visitor badge (US citizenship or permanent residency is required) to enter the facility.

Join Us Online

To attend an AMS seminar, click on the Microsoft Teams link in the seminar description. You can connect through the desktop Teams App if you have it, or you can select "Watch on the Web Instead" to enter the meeting as a guest. Please ensure that you've muted your microphone in Teams before you select "Join Now" to enter the meeting lobby.