Tag: Simulation

Double Mask Efficiency vs. Aerosols (Flow Simulation) 二重マスクの空気中粒子対策効率

二重マスクの粒子捕集効果を調査した。計算流体力学（CFD）シミュレーションを用いて、異なるマスク構成の性能を評価した。結果、N95マスクと再利用可能なマスクの組み合わせが最も優れた粒子捕集効果を示した。This study has explored the effectiveness of double masking in filtering airborne particles. Using computational fluid dynamics (CFD) simulations, the study investigated how different mask configurations perform in preventing particle transmission. The findings reveal that a combination of N95 and reusable masks offers superior filtration, significantly reducing particle escape compared to other mask types.

A technology for forming submicron particle layers on substrates by aerosol flow systems.エアロゾル流システムで基板上にサブミクロン粒子層を形成する技術

閉鎖空間における沈着を考慮したエアロゾルフローシステムを構築した。沈着効率が悪い従来法に代わって本手法を気液界面細胞曝露に応用できれば有用である。An aerosol flow system has been constructed to mimic the delivery of particles to the air-liquid interface. Potentially be applied for the deposition and analysis of submicron particles on various types of substrate without the need for vacuum imaging analysis..

Charged Aerosols Behind the Leaf: Uncovering Deposition Mechanisms 🍃葉の裏側に沈着する帯電微粒子：堆積のメカニズム

電荷を帯びたサブミクロン粒子（空気中の微小粒子）が、葉面モデルとなる平板の“表面と裏面の両方”に付着する仕組みを世界で初めて実験的に解明しました。Experimentally demonstrated, for the first time, that submicron charged aerosols can deposit on both the front and back surfaces of a leaf‑model plate.

博士D. Thesis (2014) Immobilization of particles from gas phase onto surfaces 気相からの粒子の基板への固定化

Immobilization of submicron- and nano-particles from gas phase onto solid surfaces by external forces （外力を用いたサブミクロン粒子とナノ粒子の気相から固体基板への固定化）(Thesis is written in English) 2014/5/23 Friday, 15:00 ~ 16:30, BASE1階会議室 発表者： 玄　大雄 (GEN, Masao) ** ** After working with WPI-AIMR, Tohoku University as Assistant Professor, he joined City University of Hong Kong  In 2024 he became a Associate Professor/PI at…

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Invited presentation. COMSOL (a simulation software) conference. 熱流体シミュレーション（招待）発表

We were invited for a poster talk at 2013 COMSOL Conference 2013 (Tokyo, 7 Dec.) 熱処理シミュレーションによる酸化物粉末のドーピング効率の向上 Optimization of Post-Heat Treatment for Doping of Metal Oxide Particles by P. Widiatmoko, Y. Kondo, H. Matsushima, W. Lenggoro Liquid-to-solid route for preparing a doped metal oxide (powder) shows advantage on the homogeneity of the precursor as well as…

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A workstation for numerical simulation, 計算機

A simulation hardware: 計算機WorkstationRAM: 32 GB; HD = 1 TB;CPU : Intel ® Xeon® Processor X5690（3.46 GHz, 6 core) for Simulation software:, 数値シミュレーション（有限要素法、熱流体、など）FEM based multi-physics COMSOL From fluid flow/heat transfer to structural mechanics and electromagnetic analyses.http://www.comsol.com/ 64 bitOS: Windows® 7 Professional（64bit） Service Pack 1CPU : Intel ® Xeon® Processor X5690（3.46GHz/6 core）CPU（2nd）: インテル® Xeon® プロセッサー X5690（3.46GHz/6コア）…

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