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Title: Unsteady boundary layers on a flat plate disturbed by periodic wakes. Part 2: Measurements of unsteady boundary layers and discussion

As the second part of the study, detailed hot-wire anemometry measurements of wake-affected boundary layers on the flat plate are made. These measurements are organized in order, first, to check the standpoint of the modeling of the wake-induced transition proposed in Part 1, and second, to observe wake-boundary layer interaction in detail from a viewpoint of direct and indirect effect of the wake passage upon turbulent spot generation within the boundary layer, as described by Walker (1993). The validity of the presumed state of the wake-affected boundary layer in the distance-time domain, which constitutes the basis of the transition model, is confirmed to great extent. However, it is also found that the criterion for the onset of the wake-induced transition adopted in Part 1 should be reconsidered. Some successful attempts are therefore made to specify the transition onset.
Authors:
 [1]
  1. Iwate Univ., Morioka, Iwate (Japan). Dept. of Mechanical Engineering
Publication Date:
OSTI Identifier:
250820
Report Number(s):
CONF-940626--
Journal ID: JOTUEI; ISSN 0889-504X; TRN: IM9629%%133
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Turbomachinery; Journal Volume: 118; Journal Issue: 2; Conference: 39. international gas turbine and aeroengine congress and exposition, The Hague (Netherlands), 13-16 Jun 1994; Other Information: PBD: Apr 1996
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; PLATES; HEAT TRANSFER; GAS FLOW; STANDING WAVES; TRANSITION FLOW; FLOW MODELS