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Sustainability Weeks 2010 >
The Second Hokkaido University Sustainability Research Poster Contest >
Measurement of electrostatic charge of blowing snow particles in a wind tunnel focusing on collision frequency to the snow surface
| Title: | Measurement of electrostatic charge of blowing snow particles in a wind tunnel focusing on collision frequency to the snow surface |
| Authors: | Sato, Atsushi Browse this author | | Omiya, Satoshi2 Browse this author |
| Authors(alt): | 大宮, 哲2 |
| Issue Date: | 24-Oct-2010 |
| Citation: | 第2回北海道大学サステナビリティ学生研究ポスターコンテスト = The Second Hokkaido University Sustainability Research Poster Contest. 平成22年10月24日（日） - 11月5日（金）. 北海道大学学術交流会館, 札幌市. |
| Abstract: | Blowing snow particles have an electrostatic charge. This charge may be a contributing factor in the formation of snow drifts and snow cornices and changing of the trajectory of particles. In previous studies, the charges measured in fields were larger 10 to 100 times than that measured in wind tunnel. One reason of the gap is speculated to be due to difference of the collision frequency of particles to the snow surface. The purpose of this experiment is to measure the charges of blowing snow particles focusing on the conision frequency and clarify the relationship between them. The experiments were carried out in a cryogenic wind tunnel. Results showed that the particles accumulate negative charges with increase of the coll ision frequency. Assuming an approximation function between the measured charges and the collision frequency, the charges will reach roughly the same value obtained in fields with several hundreds collisions. |
| Description: | 「統合的理解賞」受賞 |
| Conference Name: | Hokkaido University Sustainability Research Poster Contest | | 北海道大学サステナビリティ学生研究ポスターコンテスト |
| Conference Sequence: | 2 |
| Conference Place: | Sapporo | | 札幌 |
| Type: | conference presentation |
| URI: | http://hdl.handle.net/2115/44152 |
| Appears in Collections: | 北海道大学サステナビリティ・ウィーク2010 (Sustainability Weeks 2010) > 第2回北海道大学サステナビリティ学生研究ポスターコンテスト (The Second Hokkaido University Sustainability Research Poster Contest)
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Submitter: 大宮 哲
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