THE EFFECTS OF DIFFUSER SHAPE OF TIDAL CULLENT GENERATION IN TSUGARU STRAIT ON ACCELERATION EFFECT
-
- EBIKO Tsubasa
- 函館工業高等専門学校 技術教育支援センター
-
- MIYATAKE Makoto
- 函館工業高等専門学校 社会基盤工学科
-
- SARUWATARI Ayumi
- 北海道大学 大学院工学研究院
Bibliographic Information
- Other Title
-
- 津軽海峡における潮海流発電のディフューザ形状が増速効果に及ぼす影響
Abstract
<p> In exploring the feasibility of small-scale tide and ocean current power generation with the gradual extended diffuser with flanges in the Tsugaru Strait, the shape of the diffuser specialized for the local flow conditions are optimized through model experiments and numerical simulations. The each dimensions of the flange length (h), the opening angle (θ) and the diffuser length (L) are altered experimentaly. The mechanism of increasing the internal passing velocity of the diffuser are verified by comparing with the each dimension cases. The results of experiments from the variation of h and L show that the traction of the negative pressure region due to the generation of the vortex behind the flange is one of factors of the acceleration mechanism, and the variation of θ show that the lifting force working in the direction of the diffuser's outer edge is also the factor of the acceleration. The analysis shows that the increase of the vortex scale and the turbulence behind the diffuser, respectively in case of h and L changes largely and decrease in pressure reduction effect in case of θ changes largely inhibit the development of the accelerating region.</p>
Journal
-
- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
-
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75 (2), I_973-I_978, 2019
Japan Society of Civil Engineers
- Tweet
Details 詳細情報について
-
- CRID
- 1390845702300141312
-
- NII Article ID
- 130007730277
-
- ISSN
- 18838944
- 18842399
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- Crossref
- CiNii Articles
- KAKEN
-
- Abstract License Flag
- Disallowed