TY - JOUR
T1 - Statistical properties of a turbulent boundary layer affected by grid-generated turbulence (analysis of spatial development by means of direct numerical simulation)
AU - Suzuki, Hiroki
AU - Nagata, Kouji
AU - Sakai, Yasuhiko
AU - Hayase, Toshiyuki
PY - 2011
Y1 - 2011
N2 - The effects of grid-generated turbulence on a turbulent boundary layer are investigated by means of a direct numerical simulation (DNS). A square turbulence-generating grid, on which the velocity components are set to zero, is numerially constructed near the entrance to a rectangular parallelepiped domain. The nonslip condition is applied to the lower boundary to develop a turbulent boundary layer downstream of the turbulence-generating grid. The fractional step method is used to solve the governing equations. The results show that streamwise and vertical turbulence intensities and Reynolds stress normalized by the inner parameters are suppressed in the log-law region by the grid turbulence.
AB - The effects of grid-generated turbulence on a turbulent boundary layer are investigated by means of a direct numerical simulation (DNS). A square turbulence-generating grid, on which the velocity components are set to zero, is numerially constructed near the entrance to a rectangular parallelepiped domain. The nonslip condition is applied to the lower boundary to develop a turbulent boundary layer downstream of the turbulence-generating grid. The fractional step method is used to solve the governing equations. The results show that streamwise and vertical turbulence intensities and Reynolds stress normalized by the inner parameters are suppressed in the log-law region by the grid turbulence.
KW - Boundary layer
KW - Direct numerical simulation
KW - Fluid dynamics
KW - Grid-generated turbulence
KW - Numerical simulation
KW - Turbulent flow
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U2 - 10.1299/kikaib.77.737
DO - 10.1299/kikaib.77.737
M3 - Article
AN - SCOPUS:84859586365
SN - 0387-5016
VL - 77
SP - 737
EP - 748
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
IS - 775
ER -