Testing and Research Projects

Purpose

 As part of the activities stipulated in Article 4, Paragraph 1, Item (2) of the Foundation’s Articles of Incorporation, the purpose of the Foundation is to contribute to raising the level of industrial technology in Japan by carrying out experimental research on the practical application of inventions and ideas in industrial technology and by providing recommendations.

Results

AY2022 Joint Research (with Prof. Tomoaki Okuda, Department of Applied Chemistry, Faculty of Science and Technology, Keio University)

1. Research Theme

Application of Airborne Particle Manipulation Analysis Techniques in Assessing Particulate Matter Hazards

2. Purpose of the Research

This research aimed to develop and apply Keio University’s in-air particle manipulation analysis technology, including but not limited to virtual impactors and cyclones, for assessing particulate matter toxicity; this was done in collaboration with Amano Institute of Technology.

3. Contents of This Fiscal Year’s Project

3.1. Joint Production of a Small Portable Open/Close Cyclone Device

3.2. Scale-Up of Particulate Matter Collection System Using Small Open/Close Cyclones

3.3. CFD Analysis of the Interior of a Small Open/Close Cyclone

 3.3.1. Analysis Results

The conditions of the fluid simulation were as follows

▽Numerical Model:

・Software: OpenFOAM v9 (https://openfoam.org)

・Method: Steady, incompressible, single-phase (fluid)

・Turbulence Model: Reynolds-averaged Navier Stokes (RANS), kOmegaSST

▽PC Used:

・CPU: AMD Ryzen9 7950X 4.50 GHz 16C/32T (128 GB RAM)

▽Fluid material:

・Density: 1.2 kg/m3

・Viscosity: :1.8×10-5 Pa s

▽Mesh

・Number of Elements: 130,595

・Base Element Size: 1 mm

・Number of Mesh Layers Near the Wall: 4

・Enlargement Ratio: 1.0

Fig. 1 presents the results of the analysis of the fluid behavior inside the cyclone, configured with the parameters of K-TRiC’s small cyclone. It has been determined that fluid simulation results within the cyclone can be accurately obtained based on the operating flow rate. Moving forward, our plan is to undertake particle simulations and then compare these calculated results with actual measurements.

Fig. 1 Photograph of the fabricated small cyclone (open/close type) and results of fluid simulation

Major experimental research and collaborative research conducted in the past

Research period (year) Experimental research Collaborative research
1963ー1979 Development of a new electronic Taximeter system
1987ー1990 Measurement of combustion gas temperature in spark-ignition engines
Development of wind speed and direction data statistical processing equipment
1993-1999 Development of a regenerative three-phase alternating current induction dynamometer
2003ー2009 Basic research on a new method of dynamometer
2010-2015 Research on improving the efficiency of photovoltaic power generation
2012-2016 Research on thermoelectric conversion capable of high output
2016-2020 Pioneering structural catalytic conversion systems for CO2 reduction and utilization through high-speed & low-temperature methane conversion
2019-2020 Research and development of small wood chip manufacturing machine
2022- Development and practical application of a high-flow open/ closed cyclone system for the assessment of particulate matter toxicity

 This is a list of annual reports by year of publication. The year of implementation was one year earlier. Ongoing studies that have been conducted but not reported are not listed.

TOPTesting and Research Projects