DIRECT NUMERICAL-SIMULATION OF TURBULENT PIPE-FLOW - A COMPARISON BETWEEN SIMULATION AND EXPERIMENT AT LOW RE-NUMBER

Fully developed turbulent pipe flow at low Re-number is studied by mea ns of direct numerical simulation (DNS). In contrast to many previous DNS's of turbulent flows in rectangular geometries, the present DNS co de, developed for a cylindrical geometry, is based on the finite volum e technique rather than being based on a spectral method. The statisti cal results are compared with experimental data obtained with two diff erent experimental techniques. The agreement between numerical and exp erimental results is found to be good which indicates that the present DNS code is suited for this kind of numerical simulations.