| Institute | Université Paris Cité, CNRS, Matière et Systèmes Complexes (MSC) |
|---|---|
| Title | CNRS Senior Researcher |
| Country/Region | France |
| Period | 2023/02/06-2023/3/30 |
| Fiscal Year | 2022 |
| Theme | Rheology of granular suspensions with application to magma flows |
| Host | Mie Ichihara |
| Introduction | Elisabeth Guazzelli is Senior Researcher at the CNRS (The French National Center of Research). Her research interests are in the field of particulate multiphase flows, such as granular media and suspensions. She has led a very active and diversified research group at the IUSTI Laboratory of Aix-Marseille Université and CNRS, and has now moved to the MSC Laboratory of Université de Paris and CNRS. She is staying from February 6, 2023 to March 30,2023 at ERI. She is hosted by Dr. Mie Ichihara and plan to conduct research on the rheology of granular suspensions with application to magma flows. |
| Research Report | General description of my work: From February 6 to March 30, 2023, I visited the Earthquake Research Institute (ERI) and principally collaborated with Dr. Ichihara and Dr. Tapia on the project rheology of granular suspensions with application to magma and lava flows, see next section. This collaboration started a few years ago and has already been concretized by a paper on the transition from the viscous to inertial rheology in granular suspensions [1] and we anticipate further results on the applications to geophysical flows. I also had discussions with Dr. Kuwano together with Dr. Ichihara and Dr. Tapia on the pressure-imposed rheology of dry and fluid-immersed granular suspensions. In particular, we discussed the pressure-imposed rheometer that has been build at ERI and his application to particles suspended in fluids. This starting collaboration will be continued in the future. On March 1, 2023, I gave a course to the students at ERI on granular suspensions which was followed by questions and lively discussions. My slides were distributed to the students. On March 7, 2023, I visited Tokyo University of Agriculture and Technology together with Dr. Ichihara and Dr. Tapia. I had a laboratory tour in Mechanical and Chemical Engineering and met with Dr. Hanasaki, Dr. Kameda, Dr. Nagatsu, Dr. Nishimura, Dr. Tagawa, and Dr. Takada. I gave a seminar entilted Rheology of dense granular suspensions: from Newtonian to Bagnoldian rheology. From March 8 to 11, 2023, a field trip to the island of Kyushu was organized by Dr. Ichihara. Dr. Ichihara, Dr. S´anchez, Dr. Tapia and myself participated to this trip. A theoretical seismologist, Dr. Ando, who is working on fault rheology joined the trip and showed us his field near Nagasaki. We visited the Unzen volcano which experienced a major eruption in 1991-1995. We observed the structure of the lava dome and visited some remnants of damages by the pyroclastic flows and avalanches as well as the geothermal areas and hot springs. |
