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Turbulence Quantities of a Turbulent Boundary Layer over a d-type Rough Surface

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 33 Issue 1 Page 17-24
published_at 1982
KJ00000156433.pdf
[fulltext] 643 KB
Title
d 型粗面乱流境界層の乱流特性
Turbulence Quantities of a Turbulent Boundary Layer over a d-type Rough Surface
Creators Kageyama Yoshiro
Creators Osaka Hideo
Creators Nishino Toshiaki
Source Identifiers
Turbulent quantities of a fully developed turbulent boundary layer over a d-type rough surface with a zero pressure gradient are described. This surface roughness is characterized by regular two-dimensional elements of square cross section placed one element width apart, with the cavity flow between elements. All measurements have been made under a constant unit Reynolds number U_1/υ=1×(10)^6m^<-1>. Mean velocity, turbulent intensity, Reynolds shear stress, correlation and spectral density are measured and a balance of the momentum equation and the mean flow-and turbulent-kinetic energy equations is estimated. The results are compared with those obtained over a smooth surface and over the k-type surface roughness.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1982
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部