Application of PIV to Surface Flow Measurements Between Groins

• Fujita Ichiro

  "Department of Civil Engineering, Gifu University"

• Hara Motoki

  INA Corporation

• Morimoto Takao

  Wakatiku Constraction co

Bibliographic Information

Other Title

• 130 PIVによる実河川水制群間の表面流計測
• PIV ニヨル ジツカセンスイセイ グンカン ノ ヒョウメンリュウ ケイソク

Abstract

A new PIV technique is proposed for the measurement of river flows. In this method, environment-friendly tracers made from corn starch, normally used as shock absorbers, were used for visualizing the surface flow Oblique-angled tracer images were taken from the river bank, which were then transformed to non-distorted images before the PIV analysis by using a mapping function. A new feature of the method is the introduction of threshold level that detects only the tracers; only those templates containing a portion of tracers were used in the PIV analysis. The application of the method to the flow between the groins in the Nagara River revealed the existence of complicated re-circulating flows.

Journal

• Journal of the Visualization Society of Japan

  Journal of the Visualization Society of Japan 18 (Supplement1), 129-132, 1998

  The Visualization Society of Japan

Details

• CRID: 1390282679596333440
• NII Article ID: 10002675609
• NII Article ID: 130003648859
• NII Book ID: AN10374478
• DOI: 10.3154/jvs.18.supplement1_129
• ISSN: 1884037X
• ISSN: 09164731
• NDL BIB ID: 4511028
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4511028
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed