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大学院理工学研究科 システムデザイン工学専攻 機械工学コース |
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職務経歴（学内） 【 表示 ／ 非表示 】
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2017年04月-継続中
秋田大学 大学院理工学研究科 システムデザイン工学専攻 機械工学コース 准教授
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2015年04月-2016年03月
秋田大学 大学院工学資源学研究科 機械工学専攻 准教授
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2012年03月-2015年03月
秋田大学 大学院工学資源学研究科 機械工学専攻 講師
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2005年03月-2012年02月
秋田大学 工学資源学部機械工学科システム設計講座 助教
職務経歴（学外） 【 表示 ／ 非表示 】
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2004年04月-2005年02月
三菱重工業 汎用機・特車事業本部 設計職
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2001年10月-2004年03月
三菱重工業 技術本部 研究員
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2000年04月-2001年09月
三菱重工業 汎用機・特車事業本部 設計職
研究経歴 【 表示 ／ 非表示 】
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氷板の温度・濃度複合融解
その他の研究制度
研究期間：
2005年03月-継続中 -
ターボ機械の諸問題に関する研究
その他の試験研究機関
研究期間：
2000年04月-2005年02月研究態様：機関内共同研究
研究等業績 【 表示 ／ 非表示 】
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Enhanced Freezing in a Finned Enclosure Filled with Nanofluid
Yoshimi KOMATSU, Tetsuhiro NAKAJYO
International Journal of Engineering and Innovative Technology 2018年10月 [査読有り]
研究論文（学術雑誌） 国内共著
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Melting of ice stuck on cylinders placed horizontally in a water flowing duct
M.Sugawara, Y.Komatsu, H. Beer
Heat and Mass Transfer 52 ( 4 ) 693 - 700 2016年04月 [査読有り]
研究論文（学術雑誌） 国内共著
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Freezing Enhancement Around a Horizontal Tube Using Copper Foil Disks
M. Sugawara, Y. Komatsu, Y. Takahashi, H. Beer
Heat and Mass Transfer 2011年12月 [査読有り]
研究論文（学術雑誌） 国内共著
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さめ肌形状を模擬した氷板融解面近傍の流れ場の観察
小松喜美，菅原征洋，田子真
雪氷 2011年11月 [査読有り]
研究論文（学術雑誌） 国内共著
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二成分系水溶液で満たされた傾斜円筒容器内で回転する氷円柱の融解
小松喜美，田子真，菅原征洋，佐藤将史
機論 77 ( 775 ) 904 - 908 2011年03月 [査読有り]
研究論文（学術雑誌） 国内共著
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Freezing of Water with a Very Low Flow Rate through an Inclined V-shaped Groove
Yoshimi Komatsu
The International Conference on Engineering and Applied Sciences 2020年02月 [査読有り]
研究論文（国際会議プロシーディングス） 単著
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Droplet Behavior when Dropped from Anti-freezing Drainpipe
Yoshimi Komatsu
International Research Conference on Engineering and Technology 2020年01月 [査読有り]
研究論文（国際会議プロシーディングス） 単著
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Enhanced Freezing in a Finned Enclosure Filled with Nanofluid
Yoshimi KOMATSU, Tetsuhiro NAKAJYO
International Research Symposium on Engineering and Technology 2018年08月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Melting of Ice Layers Formed Around Fins in a Binary Aqueous Solution
Yoshimi Komatsu, Keisuke Kurihara
Pcoceedings of the 8th Asian Conference on Refrigeration and Air Conditioning 2016年05月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Melting Behavior of a Rotating Ice Cylinder inside an Inclined Cylindrical Cavity Filled with a Binary Aqueous Solution
Yoshimi KOMATSU, Makoto TAGO, Masashi SATO1
6th International Symposium on Advanced Science and Technology in Experimental Mechanics 2011年11月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Chiba F.
Journal of the Geothermal Research Society of Japan ( Journal of the Geothermal Research Society of Japan ) 46 ( 2 ) 49 - 66 2024年
<p>Shallow geothermal resources are less affected by atmospheric temperatures. In addition, it is maintained at a nearly constant temperature throughout the year. Therefore, when geothermal heat is used for heating and cooling, it is expected to be more energy efficient than using atmospheric air.</p><p>In Japan, the high cost of installing geothermal heat exchangers to use geothermal heat is an obstacle to its widespread use. For this reason, reducing the initial investment cost is very important for the use of geothermal heat. One cost-saving method is to install a geothermal heat exchanger in the core material of the retaining wall, which has been shown to reduce the construction cost by more than 50%.</p><p>In this study, a numerical analysis software was developed to clarify the performance and characteristics of a geothermal heat exchanger attached to an H-beam in a post-installation method using an earth retaining wall. Subsequently, the factors influencing the heat extraction and rejection performance of a single U-Tube, a double U-Tube connected in series, and two Downhole Coaxial Heat Exchangers connected in series were investigated. Furthermore, benchmarks for the heat extraction and rejection performance of different types of geothermal heat exchangers were made and compared using the “coefficient of heat extraction or rejection”, which is considered to be an index that allows quantitative evaluation of the heat extraction and rejection performance under different types of geothermal heat exchangers, installation environments, and operating conditions.</p><p>First, the calculation program was verified by comparing the numerical results with the experimental results of the thermal response test. Under the conditions defined in this study, increasing the flow rate of the heat transfer medium in all geothermal heat exchangers increases the heat extraction and rejection, but there is an upper limit. For the same temperature and flow rate of the injected heat transfer medium, the model with two Downhole Coaxial Heat Exchangers connected in series has the best heat extraction and rejection performance, while the model with a single U-tube has the worst. Furthermore, it was found that the installation of H-beams has the effect of expanding the area where the temperature of the formation changes due to heat extraction and rejection by the geothermal heat exchanger.</p>
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千葉 奎耀, 赤田 拡丈, 田子 真, 小松 喜美, 石上 孝, 谷口 聡子, 神 賢一郎, 五十嵐 俊夫
日本機械学会論文集 ( 一般社団法人 日本機械学会 ) 90 ( 934 ) 24-00031 - 24-00031 2024年
<p>Ground heat is a renewable energy source that is less affected by atmospheric temperature and maintains a nearly constant temperature throughout the year. Therefore, it can serve as a heat source for hot water and air conditioning systems, resulting in a significant reduction in carbon dioxide emissions compared to conventional systems. In Japan, the recognition of the use of ground heat is still low, and the prices of ground heat exchangers and geothermal heat pumps tend to be high. In addition, the excavation cost is very high, so it is very important to reduce the construction cost. One cost-saving method is to install a ground heat exchanger in the core material of the earth retaining wall, which has been shown to reduce construction costs by more than 50%. In this study, a numerical program was developed to clarify the performance and characteristics of a ground heat exchanger attached to an H-beam in a “Pre-installation method using the earth retaining wall”. Then, the factors influencing the heat extraction performance of two U-Tube heat exchangers connected in series, four U-Tube heat exchangers connected in series and two W-Tube heat exchangers connected in series were investigated. Firstly, the validity of the calculation program was confirmed by comparing the numerical results with the experimental thermal response results. Secondly, numerical simulations were performed using the calculation program, and the following results were obtained. Under the conditions defined in this study, we found that the rate of heat extraction increases as the flow rate of the heat extraction medium increases in all ground heat exchangers. However, it becomes difficult to increase the heat extraction when the flow of the heat extraction medium reaches a turbulent area. All three models confirmed that the H-beam expanded the area where the formation temperature changes and increased the temperature of the heat extraction medium. This led to an enhanced heat extraction performance of the ground heat exchanger. Finally, we compared the heat extraction performance of several ground heat exchangers using the 'coefficient of heat extraction or rejection'. The results showed that the four U-Tube model had the highest performance, followed by the two W-Tube model, and the two U-Tube model had the lowest performance, although the differences were small.</p>
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小松 喜美
熱工学コンファレンス講演論文集 ( 一般社団法人 日本機械学会 ) 2023 ( 0 ) D223 2023年
<p>Folded-plate roofs are used as roof materials for many large-scale facilities because they are inexpensive and easily constructed. However, in snowy regions in winter, the edges of folded-plate roofs generate large icicles. Great costs are expended to prevent damage caused by falling icicles. This study was conducted using model experiments to clarify the icicle formation mechanism at edges of a folded-plate roof and to elucidate methods of preventing icicle growth without electricity.</p>
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赤石 聖, 小松 喜美
熱工学コンファレンス講演論文集 ( 一般社団法人 日本機械学会 ) 2022 ( 0 ) 37 2022年
<p>Effects of Stephen number, Lewis number and buoyancy ratio on the melting of a solid in a two-dimensional channel are investigated by dimensionless numerical analysis. Specifically, the temperature distributions, the solvent concentration distributions, the velocity vectors and the time to complete melting are examined in this paper. Decrease ice temperature become small in the case of higher Lewis number and Stephen number. Solvent concentration near the solid become low in the case of higher Lewis number, however solvent concentration near the solid become high in the case of higher Stephen number. Roughly feature of velocity vectors is common in all cases, however upward flow become strong in the case of higher buoyancy ratio. Melting rate become small in the case of higher Lewis number, however melting rate become large in the case of higher Stephen number.</p>
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江畑 仁陽, 小松 喜美
熱工学コンファレンス講演論文集 ( 一般社団法人 日本機械学会 ) 2021 ( 0 ) 0029 2021年
<p>Effects of orientation direction, Darcy number and Rayleigh number of the porous metal fins installed in a rectangular enclosure on the solidification process are investigated by dimensionless numerical analysis. Specifically, the thermal storage capacity in PCM and the time to complete solidification are examined in this paper. Comparing the three cases of porous metal fins, full porous, and only PCM, we confirmed that porous metal fins have an advantage in thermal storage. Especially in the early stage of solidification with porous metal fins, cold heat is used for sensible heat rather than latent heat because of convective flow.</p>
◆原著論文【 表示 ／ 非表示 】
◆国際会議プロシーディングス【 表示 ／ 非表示 】
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DRAINPIPE, METHOD FOR PREVENTING BLOCKAGE OF DRAINPIPE AND INSTALLATION STRUCTURE OF DRAINPIPE( United States of America)
特許
審査請求有無：あり
特願 083600 特開 09920 特許 US 9279523
出願日： 2012年12月26日
公開日： 2013年07月04日
Yoshimi Komatsu, Yoshihiro Yoshida
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排水管の設置構造及び排水管の閉塞防止方法
特許
審査請求有無：あり
特願 2012-107956 特許 5228127
出願日： 2012年05月09日
小松喜美，吉田喜廣
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流体シール機構を備えた流体機械
特許
審査請求有無：あり
特許 4370232
東森弘高，茨木誠一，横山隆雄，小松喜美
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ハイブリッド化システム
特許
審査請求有無：あり
特許 4131638
中道憲治，茨木誠一，小松喜美，山下幸生，御子神隆
学術関係受賞 【 表示 ／ 非表示 】
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平成29年度東北地方発明表彰 発明奨励賞
2017年11月 日本発明協会
受賞者： 小松喜美，吉田喜廣 -
秋田わか杉科学奨励賞
2014年12月10日 秋田県
受賞者： 小松喜美 -
Third Prize Paper Award(IPEC)
2005年04月 The Institute of Electrical Engineers of Japan
受賞者： 野口李彦，高田陽介，山下幸生，小松喜美，茨木誠一 -
日本機械学会畠山賞
1998年03月 日本機械学会
受賞者： 小松喜美
科研費（文科省・学振）獲得実績 【 表示 ／ 非表示 】
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極微少な流下水の凍結挙動の解明と排水管閉塞防止技術への応用
基盤研究(C)
研究期間: 2017年04月 - 2019年03月