Turbulence measurements in a complex flowfield using a crossed hot-wireAn X-wire probe was used to measure the time-mean and fluctuating velocities and shear stress in nonswirling nonreacting confined jet flows. Data were taken from an axisymmetric confined jet with an expansion ratio of 2 and an expansion angle of 90 deg, and from the same segment with a contraction nozzle. Velocity profiles developed faster in the confined jet than in the free jet, with the former experiencing higher turbulence levels and larger time-mean velocities. The X-wire is concluded to furnish more accurate results for the turbulent shear stress than a multioriented single-wire technique.
Document ID
19840055212
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lilley, D. G. (Oklahoma State University Stillwater, OK, United States)
Mckillop, B. E. (Oklahoma State Univ. Stillwater, OK, United States)