TY - JOUR
TI - Relaminarization of wall turbulence by high-pressure ramps at low Reynolds numbers
AU - Song K
AU - Jovanović Jovan
AU - Al-Salaymeh A
AU - Rauh C
AU - Delgado A
JN - Thermal Science
PY - 2016
VL - 20
IS - 11
SP - 93
EP - 102
PT - Article
AB - Reverse transition from the turbulent towards the laminar flow regime was  investigated experimentally by progressively increasing the pressure up to  400 MPa in a fully developed pipe flow operated with silicone oil as the  working fluid. Using hot-wire anemometry, it is shown indirectly that at low  Reynolds numbers a rapid increase in pressure modifies the turbulence  dynamics owing to the processes which induce the effects caused by fluid  compressibility in the region very close to the wall. The experimental  results confirm that under such circumstances, the traditional mechanism  responsible for self-maintenance of turbulence in wall-bounded flows is  altered in such a way as to lead towards a state in which turbulence cannot  persist any longer.