Accession Number : ADA259326


Title :   A Numerical Simulation of Two-Phase Jet Spreading Using an Euler- Lagrangian Technique,


Corporate Author : RENSSELAER POLYTECHNIC INST TROY NY CENTER FOR MULTIPHASE RESEARCH


Personal Author(s) : Bonetto, F ; Drew, D ; Lahey, R T , Jr


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259326.pdf


Report Date : Jan 1992


Pagination or Media Count : 33


Abstract : The objective of this paper is to study the spreading of a submerged two phase jet. A plunging liquid jet impacting on a still liquid pool may carry under bubbles by entraining the surrounding gas. For low liquid jet turbulence, the measured average bubble size was about 200 m Bonetto and Lahey, 1992. For low void fraction, one may assume that the liquid velocity field is not disturbed by the presence of the bubbles. This allows the use of known solutions for the velocity field in a planar liquid jet. That is the liquid flow may be solved using Eulerian coordinates and neglecting the effect of the bubbles. The momentum equation for the bubbles has been written in Lagrangian coordinates. The resulting equations are solved for bubble trajectories in the known liquid velocity field.


Descriptors :   *BUBBLES , *LIQUID JETS , VELOCITY , TURBULENCE , FLOW , MOMENTUM , AIR ENTRAINMENT , LAGRANGIAN FUNCTIONS , TRAJECTORIES , VOIDS , COORDINATES


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE