A SOFTWARE FRAMEWORK AND NUMERICAL METHODS FOR
        HYDRAULIC ANALYSIS OF SLURRY PIPELINES

                       E.Bournaski
         Institute of Water Problems, BASci., Sofia
                        V.Berman
            Institute of Hydromechanics, Kiev
           P.Panteleev, Tz.Bournaska, D.Petrov
            Computing Centre of BASci., Sofia


The hydraulic transport of solid-liquid suspensions by pipelines,
used in many industrial applications,  needs detailed analysis on
the basis of conservation laws.  These analyses are required  for
the  planning,  design,  and operation  of pipelines.  The  paper
describes a numerical system for evaluation  of hydraulic parame-
ters of  slurry pipe  flows  developed by  Bulgarian  Academy  of
Sciences and National Academy of Sciences of Ukraine. This system
allows to analys  pressure gradient  for the flow  of monodispers
mixtures in pipes,  critical velocity  and to simulate  hydraulic
transients including the virtual mass effect. The system is built
up by a series of software elements. The finite difference method,
the Rounge-Kutta  method  and the method of characteristics  with
high-order scheme are adapted  for the respective  problems.  The
use of the system will be illustrated  by means  of some  engine-
ering examples  and comparisons with  experimental  measurements.
Bases  of  a data  base  with available  results  of experimental
slurry flow measurements were prepared. The data base can be used
both to test  the numerical system and  in engineering  practice.
Although the numerical system is an academic development,  it may
be easily adapted as a commercial software tool.