Intermittency and Reynolds number

H. Kahalerras (1) , Yann Malecot (2, 3) , Yves Gagne (4) , Bernard Castaing (5)

1 USTHB - Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene [Alger]
2 RV - Risques, Vulnérabilité des structures et comportement mécanique des matériaux
3 3SR - Laboratoire sols, solides, structures - risques [Grenoble]
4 LEGI - Laboratoire des Écoulements Géophysiques et Industriels [Grenoble]
5 CRTBT - Centre de Recherches sur les Très Basses Températures

Hot wire measurements of longitudinal and transverse increments are performed in three different types of flows on a large range of Reynolds numbers (100≲Rλ≲3000). An improved technique based on cumulant expansion of velocity structure functions is used to estimate the spreading of the pdfs and to study their scaling properties in the inertial range. Thus, the rate of intermittency depth through the scales of flow, called here β(Rλ), is experimentally introduced, and it is shown that β(Rλ) has a universal behavior on a very large Reynolds numbers range. © 1998 American Institute of Physics.

Domaines: Mécanique [physics]

H. Kahalerras, Yann Malecot, Yves Gagne, Bernard Castaing. Intermittency and Reynolds number. Physics of Fluids, 1998, 10 (4), pp.910-921. ⟨hal-01998330⟩