Investigation of axisymmetric turbulent steam jets using laser-Doppler anemometry


Başkaya Ş. , Gilchrist A., Fraser S.

Proceedings of the 1995 ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition, Hilton Head, SC, USA, 13 - 18 August 1995, vol.229, pp.371-378 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 229
  • City: Hilton Head, SC, USA
  • Page Numbers: pp.371-378

Abstract

Laser-Doppler anemometry (LDA) has been used to obtain velocity distributions in the fully developed flow region of an axisymmetric steam jet issuing into ambient air. Experiments were conducted using an Ar-Ion laser based tow-component LDA system connected to two burst spectrum analyzers (BSA), operating in backscatter mode. Radial velocity profiles at five different distances from the nozzle exit are reported. Measured velocities are presented as time mean averages and as Reynolds stresses. Integration of velocity profiles was used to estimate the air entrainment rate by assuming complete self-preservation and conical flow in the developed jet region. According to the experimental results reported it may be concluded that steam-to-air jets behave in a very similar way to air jets or similar gas jets which have been extensively studied and reported.