SSD Seminar Series with Prof. Kazuo Kashiyama

Monday, August 21, 2023, 4 to 5pm

On August 21, 2023 we welcome Prof. Kazuo Kashiyama of the Faculty of Science and Engineering at the Chuo University, Japan, as speaker in our SSD Seminar Series. 

The Seminar will take place in person only in Rogowski Building, Room 115, Schinkelstraße 2, 52062 Aachen.


Simulation and Visualization Using XR technology ~Application to Safety and Environmental Problems~

picture of Prof. Kazuo Kashiyama Copyright: © Prof. Kazuo Kashiyama

In recent years, the development of XR (VR/AR/MR) has been remarkable, and it is effectively used not only in the field of science and engineering but also in various fields. In this presentation, the simulation and visualization using XR technique for safety and environmental problems are presented.

For the application to safety problems, Tsunami disaster problem is investigated. Tsunamis kill many human beings and damage economic activities seriously, such as the tsunami caused by the Great East Japan Earthquake in 2011. It is very important to develop useful modelling, simulation and visualization methods for tsunami waves in order to perform the planning and design for the community development and the mitigation of disaster. Visualization is especially important to understand the power of tsunami and to improve the consciousness of disaster mitigation. In this presentation, the modelling, simulation and visualization methods for tsunami waves are presented. For the modelling method, several GIS, CAD and AUV data are employed. The stabilized finite element method is employed for tsunami based on the shallow water equation. We also propose a visualization system linked to the evacuation simulation to understand the power of tsunami and the importance of the evacuation. The present modelling, simulation and visualization methods are shown to be useful tools for disaster mitigation education.

On the other hand, for the application to environmental problems, noise problems in urban areas are investigated. Since noise may affect the human body such as psychological discomfort and sleep disturbance, it is necessary to quantitatively evaluate the noise level when planning and designing soundproofing measures in urban areas. In the conventional studies, the computed noise level is described by the visualization using computer graphics such as iso-surface. Although visualization is a powerful tool to understand the distribution of noise, it is difficult to recognize the noise level intuitively. In this presentation, noise evaluation systems based on both acoustic wave theory and geometrical acoustic theory are developed. The system exposes to the users the computed noise level with both the auditory information using sound source signal and the visual information using CG image. In order to investigate the validity and efficiency of the method, the present method is applied to several noise problems. The present system is useful for planning and designing tools for various facilities in an urban area, and also for consensus building for designers and the local residents.