CENTER FOR COMPUTATIONAL MATHEMATICS COLLOQUIUM

                  UNIVERSITY OF COLORADO AT DENVER



TITLE:   LOCAL NUMERICAL MODELING OF TWO-PHASE FLOWS WITH PHASE CHANGES
 

SPEAKER: John Trapp, Department of Mechanical Engineering 
         University of Colorado at Denver
         

DATE:    Monday, April 21, 1997


PLACE:   Math Conference Room 626 
         UCD Building, 1250 14th St., Denver


TIME:    noon (Refreshments served at 11:45 am) 



ABSTRACT

	There continues to be widespread interest in the local simulation
of fluid flows with interfaces. Most numerical simulatons to date have
been for immiscible fluids with material interfaces. The numerical
simulation of simple two-phase flows ( simple bubble and wall bubble
interactions ) with interface heat and mas transfer has been addressed.
The interface jump conditions and constitutive equations are numericaally
solved along with the continuous phase liquid and vapor equations on each
side of a moving interface. A moving mesh that explicitly follows the
interface notion has been used. The basic numerical scheme will be
outlined and some preliminary simulations presented. During the
development of the numerical method a fundamental analytic interface
modeling problem was discovered. This basic analytic problem will also be
discussed.