Lyon Center

Lyon Center(LyC)
Integration Research Center for Materials and Fluid Sciences

Collaborative Research Projects

  • Numerical modelling of particle-laden effect on supersonic flow for cold-spray polymer coating

    Chrystelle BERNARD
    Frontier Research Institute for Interdisciplinary Sciences, Tohoku University

    The aim of this research is to obtain some insights of the polymer particles history inside the cold-spray nozzle. By understanding the evolution of the particle temperature and velocity inside the nozzle, we aim to analyze the probability of deposition or rebound of particles on a substrate.
    Using a pressurized heated gas, particles heat up and accelerate through the cold-spray nozzle. Because polymers are sensitive to both strain rate and temperature, distribution of the particle temperature before impact is of a high importance.

  • Ionic Liquid Polymer for corrosion resistance applications

    Nicolas MARY
    ELyTMaX, CNRS, Tohoku University, Université de Lyon

    This collaborative work deals with the degradation evaluation of new polymer coatings by NDE (capacitive measurement). Results are summarized below:
    ・Water uptake kinetic of new generation of epoxy polymer is slower than epoxy amine.
    ・Water diffusion coefficient depends on the new curing agent concentration.
    ・Capacitive measurements methods are able to follow the water penetration and gives consistent measurements versus.

  • Coupled computing of fluid-structure interaction problems for multiphase energy systems

    Jun ISHIMOTO
    Institute of Fluid Science, Tohoku University

    This computational study provides advanced information for predicting arbitrary crack propagation of solid partition wall in pressure vessels accompany with leaked hydrogen-air mixing phenomena as an important part of assessing hydrogen as an energy vector. The present study was conducted by using a multiphysics of the coupled peridynamics and Euler computational methods.

  • Stability and Transition to Turbulence of Taylor Vortex in a Gap between Rotating Two Cones

    Takahiro ADACHI
    Akita University

    In this study, we investigated stability and transition to turbulence of Taylor vortex in a gap between rotating two cones. In the case that the height of the two cones are limited and finite, the transition becomes an imperfect bifurcation. This time, we tried to classify the transition of Taylor vortex by a bifurcation diagram as I-IV regions as shown in the figure.

  • Modelling materials behavior for advanced electromagnetic Non Destructive Testing techniques

    Gael SEBALD
    CNRS, Université de Lyon, INSA-Lyon, Tohoku University

    • Development of ferromagnetic hysteresis models (e.g. application of Jiles-Atherton theory for understanding NDT signals).
    • Magnetic Incremental Permeability and Barkhausen Noise on representative metallic samples.
    • Comparison between NDT techniques revealing the microstructure.
    In 3 years, this project led to 7 publications in international peer-reviewed journals, and 20 international conferences.

  • Corrosion characterization for pipe wall by ultrasonic wave

    Hiroyuki NAKAMOTO
    Kobe University

    The roughness of the inner surface of the pipe induced by corrosion might be a fatal risk for the health of the piping system. This study revealed the relationship between ultrasonic attenuation and surface roughness to estimate roughness on the inner surface using broadband probes.

  • Response Characteristics of Cellulose Nanofibril under AC Electric Field

    Hidemasa TAKANA
    Institute of Fluid Science, Tohoku University

    The alignment process of the cellulose nano-fibrils (CNFs) in an alternating electric field and elongational flow is numerically simulated for the fabrication of strong cellulose filaments. The results show that CNF alignment in the electric field is enhanced with applied voltage. An optimal fibril length is shown to exist in this process.

  • Elucidation of the pathophysiology of skin sodium and water metabolism

    RAHMAN ASADUR
    Kagawa University

    To establish the fixation method of dermal tissue for evaluating the in vivo Na+ distribution by imaging mass spectrometry (IMS). By applying the vitrification method, we may measure the Na+ concentration distribution accurately in skin by IMS. This technique will help to identify the local disturbances in the Na+/moisture balance of dermal tissue, and to elucidate the mechanism of control behind these disturbances.

  • Active Control of Protein Mass Transfer by Membrane Utilizing Variation of Surrounding Condition

    Atsuki KOMIYA
    Institute of Fluid Science, Tohoku University

    This collaboration research focuses on the active control of protein mass transfer by utilizing a hindered diffusion process caused by functional membrane structure and characteristics. The experimental results reveal that the protein mass flux was affected by membrane structure and could be specially and temporally controlled by the membrane.

  • Eddy Current Magnetic Signature (EC-MS) micro-magnetic nondestructive method for the evaluation of Fe-Si electric steel

    Benjamin DUCHARNE
    INSA Lyon

    Simple residual stress evaluation method is highly required in various industries. Residual stress strongly modifies the magnetic behavior of ferromagnetic steels. Eddy Current Magnetic Signature (EC-MS) is especially sensitive to residual stress. EC-MS exhibits drastic changes, able to predict elastic or plastic deformations.
    This project investigates EC-MS, a dedicated numerical tool is proposed to improve the efficiency of the method.

  • Microfluidic Tools to study Aerotaxis in Eukaryotic Cells

    Jean-Paul RIEU
    University Claude Bernard Lyon 1

    We are developing microfluidic tools to study directed migration toward oxygen (aerotaxis) in eukaryotic cells. Our device enables a precise control of the oxygen gradient in the 0-5% O2 range. With this device, we measured an exceptionally quick and massive aerotactic and aerokinetic response of the social amoeba Dictyostelium discoideum.

  • Sensitivity analysis for fast and efficient CFD design under unsteady flow behavior

    Aiko YAKENO
    Institute of Fluid Science, Tohoku University

    For the fast design of a wing shape, a sensitivity analysis of the numerical experiments is of special interest. We started discussions and shared ideas, have obtained one of the first results on transonic buffet unsteady phenomena around an airfoil with setting up database of almost 100 airfoil cases.

Page Top