Details

Autor(en) / Beteiligte

• Khoury, George K El
• Schlatter, Philipp
• Brethouwer, Geert
• Johansson, Arne V

Titel

Turbulent pipe flow: Statistics, Re -dependence, structures and similarities with channel and boundary layer flows

Ist Teil von

• Journal of physics. Conference series, 2014-01, Vol.506 (1), p.12010-14

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2014

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Direct numerical simulation data of fully developed turbulent pipe flow are extensively compared with those of turbulent channel flow and zero-pressure-gradient boundary layer flow for Reτ up to 1000. In the near-wall region, a high degree of similarity is observed in the three flow cases in terms of one-point statistics, probability density functions of the wall-shear stress and pressure, spectra, Reynolds stress budgets and advection velocity of the turbulent structures. This supports the notion that the near-wall region is universal for pipe and channel flow. Probability density functions of the wall shear stress, streamwise turbulence intensities, one-dimensional spanwise/azimuthal spectra of the streamwise velocity and Reynolds-stress budgets are very similar near the wall in the three flow cases, suggesting that the three canonical wall-bounded flows share many features. In the wake region, the mean streamwise velocity and Reynolds stress budgets show some expected differences.