Abstract
The intermittency factor in a thick axisymmetric boundary layer with positive pressure gradient (diffuser-flow) was evaluated with hot-wire anemometers and a multi-channel analyzer. The probability density of the signal S(t) (a space–time derivative of the streamwise velocity) is evaluated and then decomposed into three separate curves representing fluids in the turbulent, the transition, and the non-turbulent states respectively. Different values of the intermittency factor γ are calculated by taking different fractions of fluid in the transition state with the turbulent fluid. A model of flow in a conical diffuser is suggested.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy
Cited by
14 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献