Yutaka Oda

Spatio-Temporal Behavior of Endwall Film Cooling of a Turbine Vane With Purge Flow Measured by Fast-Response Pressure-Sensitive Paint

Yutaka Oda, Kohei Takatani, Francesco Mangini, Robert Krewinkel et autres

Abstract The demand for high-efficiency, low-emission gas turbines has intensified with growing global energy consumption. In modern turbines, elevated inlet temperatures and uniform combustor-exit profiles expose the first-stage vane endwall to severe thermal loads. Complex vortex structures, such as horseshoe and secondary …

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Frost microstructure during the frost layer growth

Ryosuke MATSUMOTO, Yutaka Oda, Kentaro Uesugi, Masato Hoshino

Frost formation on cold surfaces significantly impacts heat exchanger performance by increasing thermal resistance and reducing airflow efficiency. Understanding the microstructure of the frost layer during its growth phase is essential for predicting and mitigating its effects. This study investigates the frost …

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Development of long-acting local anesthetics: a long way from basic research to clinical application

Yutaka Oda

Reviewing COVID-19 from an anesthesiologist’s perspective in 2022: JA symposium

Kanji Uchida, Osamu Nishida, Hiroshi Morimatsu, Takahisa Goto et autres

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Treatment and outcome of COVID-19 patients in a specialized hospital during the third wave: advance of age and increased mortality compared with the first/second waves

Yutaka Oda, Motoko Shimada, Satoshi Shiraishi, Osamu Kurai

PURPOSE: To elucidate the clinical course of patients with coronavirus disease 2019 (COVID-19) treated at a specialized hospital mainly for those with mild and moderate severity during the third wave, and to compare that with the first and second (1st/2nd) waves. METHODS: …

Clinical profiles and outcome of patients with COVID-19 in a specialized hospital in Japan

Yutaka Oda, Satoshi Shiraishi, Motoko Shimada, Osamu Kurai

NOx reduction of city gas/hydrogen mixed combustion by two-stage combustion

Daisuke Kobayashi, Koki Arai, Takuma Kanaoka, Ryosuke MATSUMOTO et autres

Increasing attention has been focused on hydrogen as a boiler fuel due to the carbon-free fuels. On the hydrogen combustion as the boiler fuel, the hydrogen burner should be applied the diffusion combustion to avoid the flashback because of the high burning …

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Unsteady measurements of film cooling effectiveness with fast-response PSP in a linear turbine vane cascade

Noriyoshi FUKUOKA, Yutaka Oda, N Nakabayashi, Kenichiro Takeishi

Film cooling is a complex flow and unsteady phenomenon due to the mixing of mainstream and coolant flow. Therefore, it is important to evaluate the unsteady behavior to improve the performance of film cooling. In addition, since the vane surface curvature and …

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Hydrogen Combustion with Water Spray from a Two-fluid Nozzle Using Gaseous Fuel

Koki Arai, Takuma Kanaoka, Daisuke Kobayashi, Ryosuke MATSUMOTO et autres

The purpose of this study is to demonstrate the feasibility of hydrogen combustion with water spray using two-fluid nozzle. In the nozzle, water is atomized by the fuel, hydrogen. Therefore, the fuel and water are dispersed from the nozzle simultaneously. As a …

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Experiment of Turbulent Heat Transfer in Pulsating Channel Flow

Taketo TOMURA, Yutaka Oda, Tatsuro Yamazaki, Tomohiro KASAHARA et autres

脈動乱流場における熱伝達機構の解明は，往復動内燃機関やパルス燃焼器などの工学機器の効率向上において重要な役割を果たす．そのため本研究では，周期的な流量変化を実現する脈動発生機構を設けた2次元チャネル風洞において，熱線流速計と抵抗線温度計を用いて速度と温度の時系列データを取得した．講演では，脈動周波数が各種位相平均量に与える影響について報告する．

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Impact of intraoperative goal-directed fluid therapy on major morbidity and mortality after transthoracic oesophagectomy: a multicentre, randomised controlled trial

Akira Mukai, Koichi Suehiro, Ryota Watanabe, Takashi Juri et autres

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Transient Response of Turbulent Heat Transfer to Step-Like Change of Flow Rate in Channel Flow

Tatsuro Yamazaki, Yutaka Oda, Ryosuke MATSUMOTO, Masashi KATSUKI

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