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.北冰洋的气象数据来自ECMWF和日本气象厅。海冰分布的卫星遥感数据来自NSIDC，这些数据来自安装在美国DMSP卫星上的SSM/I传感器.由于海流资料非常有限，我们进行了基本的实验，使用旋转水槽和数值模拟相同的条件下，考虑使用数值模拟技术。实验电流显示出相同的模式，在北冰洋观测到的表面电流，这表明河流径流沿沿着西伯利亚和阿拉斯加海岸的影响是显着的。多层模式的数值模拟结果也显示了同样的规律，表明该程序可以用于北冰洋海流的预报.所有采集的数据都被转换成ArcView GIS数据库格式。因此，查看和分析数据变得很容易。4.利用本研究开发的地理信息系统数据库系统对北冰洋海冰进行了分析。虽然整个冰场的变化主要受风和气温的影响，但部分地区的海冰运动非常复杂。这样，就可以提取每个海区的海冰变化特征.开发了几个接口程序，将地理信息系统与海冰变化预测程序连接起来。因此，开发了一个数据、地理信息系统和预测计算的综合系统。利用该系统进行了海冰变化预测计算，验证了该系统的有效性。

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, 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

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