Measurement of cavitation bubble cluster downstream of sheet cavity

片材空腔下游空化气泡团的测量

• 批准号: 11450387
• 负责人: YAMAGUCHI Hajime
• 金额: $ 9.73万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11450387/
• 关键词: Arctic Ocean; Sea Ice; Geographic Information System; GIS; Numerical Forecast; Polar Environment; Ice Engineering; Drifting Ice

1. Meteorological data on the Arctic Ocean were obtained from ECMWF and Japan Meteorological Agency. Sea ice distribution data measured by satellite remote sensing were obtained from NSIDC.These data are of SSM/I sensor, which is installed on the US DMSP satellite.2. Since sea current data is very limited, we performed fundamental experiments using a rotating tank and also numerical simulation with the same condition, considering to use numerical simulation technique. The experimental current showed the same pattern as the observed surface current in the Arctic Ocean, suggesting that the effect of river run-off along the Siberian and Alaska coasts is significant. The numerical simulation using multi-layer model also showed the same pattern, suggesting that this computer program can be applied to predict the Arctic Ocean current.3. All of the collected data were transferred into ArcView GIS database format. Because of this, it has become easy to view and analyze the data.4. The GIS-database system developed in this research was used to analyze the sea ice in the Arctic Ocean. Although the whole ice field changed mainly due to wind and air temperature, some areas showed very complicated sea ice motion. As such, the characteristics of sea ice change can be extracted for each sea area.5. Several interface programs were developed to connect the GIS and sea ice change prediction programs. As a result, an integrated system of data, GIS and prediction computations was developed. Using this system, we executed sea ice change prediction computations, confirming the effectiveness of this system.

1。从ECMWF和日本气象局获得有关北极海洋的气象数据。通过卫星遥感测量的海冰分布数据是从NSIDC获得的。这些数据是SSM/I传感器，该数据安装在美国DMSP卫星上。2。由于SEA Current数据非常有限，因此我们使用旋转罐进行了基本实验，并考虑使用数值模拟技术，也使用了相同条件的数值模拟。实验电流显示出与北极海中观察到的表面电流相同的模式，这表明沿西伯利亚和阿拉斯加沿岸的河流径流的影响很大。使用多层模型的数值模拟也显示出相同的模式，这表明该计算机程序可以应用于预测北极海洋电流3。所有收集的数据都将其转移到Arcview GIS数据库格式中。因此，它变得易于查看和分析数据4。这项研究中开发的GIS数据库系统用于分析北极海洋中的海冰。尽管整个冰场主要是由于风温和空气温度而变化的，但一些区域显示出非常复杂的海冰运动。因此，可以为每个海面积提取海冰变化的特征5。开发了几个接口程序，以连接GIS和Sea Ice变更预测计划。结果，开发了一个集成的数据，GIS和预测计算系统。使用该系统，我们执行了海冰变化预测计算，确认了该系统的有效性。

项目成果

H.Yamaguchi,Y.Suzuki, et al.: "Influence of Bow Shape on Icebreaking Resistance in High Speed Range"Proc. 18th Intern.Conf. Offshore Mechanics and Arctic Engineering -OMAE99,ASME,St.John's,Canada. OMAE99-1104. 1-9 (1999)

H.Yamaguchi，Y.Suzuki，等：“弓形对高速范围内破冰阻力的影响”Proc。

C.Rheem,H.Yamaguchi, et al.: "A Short Term Prediction of Ice Condition in the Arctic Ocean with Attention to the Northern Sea Route"Proc. 20th Intern. Conf. Offshore Mechanics and Arctic Engineering -OMAE01,ASME,Rio de Janeiro,Brazil,2001. (to appear). (2

C.Rheem，H.Yamaguchi，等人：“北冰洋冰况的短期预测，关注北海航线”Proc。

Chang-Kyu Rheem, Hajime Yamaguchi and Takatoshi Matsuzwa: "Application of a New Sea Ice Dynamic Model, DMDF Model, for the Prediction of Pack Ice Motion in the Whole Okhotsk Sea"Proc.The 16th International Symposium on Okhotsk Sea & Sea Ice, 2001, Monbets

Chang-Kyu Rheem、Hajime Yamaguchi 和 Takatoshi Matsuzwa：“应用新的海冰动态模型 DMDF 模型来预测整个鄂霍次克海的浮冰运动”Proc.第 16 届鄂霍次克海国际研讨会

Chang-Kyu Rheem, Hajime Yamaguchi, Ryunosuke Katayama and Takashi Komura: "A Short Term Prediction of Ice Condition in the Arctic Ocean with Attention to the Northem Sea Route"Proc.20th Intern.Conf.Offshore Mechanics and Arctic Engineering - OMAE01, ASME,

Chang-Kyu Rheem、Hajime Yamaguchi、R​​yunosuke Katayama 和 Takashi Komura：“关注北冰洋航线的北冰洋冰况短期预测”Proc.20th Intern.Conf.Offshore Mechanics and Arctic Engineering - OMAE01、ASME

Hajime Yamaguchi, Hisashi Nagaoka, Chang-Kyu Rheem and Takatoshi Matsuzawa: "Numerical Prediction of Okhotsk Sea Ice Motion"Proc.International Symposium on Atmosphere-Ocean-Cryosphere interaction in the Sea of Okhotsk and the Sur-rounding Environment, Ins

Hajime Yamaguchi、Hisashi Nagaoka、Chang-Kyu Rheem 和 Takatoshi Matsuzawa：“鄂霍次克海冰运动的数值预测”Proc.鄂霍次克海及周边环境大气-海洋-冰冻圈相互作用国际研讨会，Ins