2024-03-29T01:12:02Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00030871
2023-01-16T04:40:44Z
320:2524:2544:2585
An experimental study on flow around two-dimensional models with reference to bed from porpagation
Nakagawa, Takeo
102208
Takagi, Fusetsu
102209
1982-03-31
An experimental study on the flow around wavy models has been made. All of the models has two crests and two-dimensional profile. It is found that the flow instability around the models depends on the Reynolds number R_∞=U_∞ h⁄υ, where U_∞ is the free stream velocity, h the model height and υ the kinematic viscosity of the fluids, and the steepness S=h⁄λ, where λ is the model wave length, but the flow separation depends on the steepness only. Also, found are that on the surface of the models there appear Taylor-Görtler type vortices once the Reynolds number exceeds the critical value and that the form of the vortices is deformed depending on the Reynolds number and the model profile. On the basis of the present experiment, it is suggested that the intensity and scale of the separation eddy are decisive factors for bed form propagation.
departmental bulletin paper
Faculty of Engineering, Nagoya University
1982-03-31
Memoirs of the Faculty of Engineering, Nagoya University
2
33
215
227
0027-7657
eng