The temperature fields in the center plane of a channel with a square cross-section have been measured. Stearn injected at relatively low mass fluxes through a small hole in one of the walls of the channel condensed intermittently in a small area close to the inlet. The upstream temperature of the liquid cross-flow, TL, the momentum ratio, J, and the Prandtl number proved to be important for the single-phase temperature field induced in the jet further away from the steam inlet. Jet centerlines of velocity and temperature are measured and positions are compared. Different locations for J <100 and low TL are explained from dependencies on Reynolds and Prandtl numbers. Next to the jet centerline a second high-temperature zone was found to occur, close to the wall and downstream of the steam inlet. The importance of capillary forces is investigated with the aid of 3D CFD computations.
|Title of host publication
|Proceedings of the Sixth International Conference on Transport Phenomena in Multiphase Systems, [HEAT 2011] June 28 - July 2, 2011, Ryn, Poland
|M.E. Poniewski, S. Albrudzinski
|Place of Publication
|Published - 2011