A study of turbulent flow in ducts

Abstract The fully developed incompressible turbulent boundary layer is studied in isothermal two-dimensional channel flow using constant-temperature hot-wire anemometry. Measurements of the three components of turbulence intensity are carried out over a range of Reynolds numbers. Results show that at any point in the flow field in the region 0.118 ⩽ y/d ⩽ 1, and for Reynolds numbers ranging from 1.52 × 104 to 6.16 × 104 the turbulence intensities are linearly related. Furthermore, various turbulence data pertinent to channel and pipe flows are analysed.