抄録
We investigate the velocity profiles over roughness elements, which are spheres or hemispheres sticked densely on the surface of the wind-tunnel bed, and the forces exerted on them, which can be calculated by measuring the surface-pressure distributions. On the other hand, the existing critical shear stresses or tractive forces depend on not only the time-mean but also the instantaneous values of the boundary shear stress. But there are little reports on the probability density distribution of hydrodynamic forces on roughness wall. The temporal distribution of the drag forces exerted on densely placed spherical roughness elements is investigated experimentally.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 47-54 |
| ページ数 | 8 |
| ジャーナル | Doboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers |
| 発行部数 | 399 pt 2-10 |
| 出版物ステータス | Published - 1988 11 |
| 外部発表 | Yes |
Fingerprint
ASJC Scopus subject areas
- Engineering(all)
これを引用
Experimental study on velocity profiles over the bed roughened with spheres or hemispheres and fluid forces exerted on them. / Kikkawa, Hideo; Uematsu, Ryuji; Jyo, Mamoru; Sekine, Masato.
：: Doboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers, 番号 399 pt 2-10, 11.1988, p. 47-54.研究成果: Article
}
TY - JOUR
T1 - Experimental study on velocity profiles over the bed roughened with spheres or hemispheres and fluid forces exerted on them
AU - Kikkawa, Hideo
AU - Uematsu, Ryuji
AU - Jyo, Mamoru
AU - Sekine, Masato
PY - 1988/11
Y1 - 1988/11
N2 - We investigate the velocity profiles over roughness elements, which are spheres or hemispheres sticked densely on the surface of the wind-tunnel bed, and the forces exerted on them, which can be calculated by measuring the surface-pressure distributions. On the other hand, the existing critical shear stresses or tractive forces depend on not only the time-mean but also the instantaneous values of the boundary shear stress. But there are little reports on the probability density distribution of hydrodynamic forces on roughness wall. The temporal distribution of the drag forces exerted on densely placed spherical roughness elements is investigated experimentally.
AB - We investigate the velocity profiles over roughness elements, which are spheres or hemispheres sticked densely on the surface of the wind-tunnel bed, and the forces exerted on them, which can be calculated by measuring the surface-pressure distributions. On the other hand, the existing critical shear stresses or tractive forces depend on not only the time-mean but also the instantaneous values of the boundary shear stress. But there are little reports on the probability density distribution of hydrodynamic forces on roughness wall. The temporal distribution of the drag forces exerted on densely placed spherical roughness elements is investigated experimentally.
UR - http://www.scopus.com/inward/record.url?scp=0024106036&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024106036&partnerID=8YFLogxK
M3 - Article
SP - 47
EP - 54
JO - Doboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers
JF - Doboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers
SN - 0289-7806
IS - 399 pt 2-10
ER -