Shinji Tamano

TL;DR: In this paper, the effects of adiabatic and isothermal conditions on the statistics in compressible turbulent channel flow were investigated using direct numerical simulation (DNS), and the results showed that Morkovin's hypothesis is not applicable to the near-wall asymptotic behaviour of the wall-normal turbulence intensity even if the variable property effect is taken into account.

TL;DR: In this article, the drag reduction ability of the seal fur surface was tested in a rectangular channel flow using water and a glycerol-water mixture to measure the pressure drop along the channel in order to evaluate friction factors in a wide range of Reynolds number conditions, and the effect of surface roughness was confirmed quantitatively.

TL;DR: In this article, the effect of a spanwise traveling-wave motion on a zero-pressure-gradient turbulent boundary layer over a flexible sheet was investigated at low Reynolds numbers using a single hot-wire anemometer for turbulence statistics and two laser displacement sensors for displacements of the flexible sheet.

TL;DR: In this paper, the effect of a spanwise-traveling wave with wall deformation on a zero-pressure-gradient turbulent boundary layer over a flexible sheet was investigated, where the traveling wave motion was generated by a vibration device with a crank via upstream and downstream smooth rigid wall sections.

TL;DR: In this article, the effect of thermal wall boundary conditions on turbulence statistics and structures in a compressible turbulent flow is clarified. But the main objective of this paper is to clarify the effect.