@article{oai:uec.repo.nii.ac.jp:00010323, author = {山本, 遼 and Yamamoto, R. and 森田, 淳一 and Morita, J. and 守, 裕也 and Mamori, H. and 宮嵜, 武 and Miyazaki, T. and 原, 峻平 and Hara, S.}, issue = {8}, journal = {Physics of Fluids}, month = {Aug}, note = {To improve energy efficiency, flow control techniques for skin-friction drag and heat transfer with regard to wall turbulence are essential. This study performs direct numerical simulation of turbulent channel flows. The traveling-wave-like body force is employed as the flow control technique to break the similarity between momentum and heat transfer. The traveling wave control mimics the self-excited thin film in the corresponding experimental study. When the wave traveled slowly along the downstream direction, the skin-friction drag, heat transfer, and analogy factor were found to increase. Moreover, these parameters increased with an increase in the reference height of the traveling wave (h_w). Flow visualization shows turbulence enhancement owing to the increase in h_w. Three-component decomposition elucidates the difference between the control effect on the Reynolds shear stress and the turbulent heat flux.}, title = {Turbulent channel flow controlled by traveling-wave-like body force mimicking oscillating thin films}, volume = {34}, year = {2022} }