III.  Flow with liquid spray injection (steady).

       3.1-Physical Problem Description

        The probem geometry and flow conditions in this chapter are as describe in the first point, except that the flow is no longer isothermal and the incoming air is at a temperature of 350 K. The additionnal physical complexity comes from the fact that a water spray is injected at the inlet to increase the concentration of the water vapour in the air stream. The amount of liquid injected is 6.09 10^-6 kg/s. The phisical properties of the liquid
and the initial droplet diameter, temperature and velocity are as follows :
Density (kg/m3) Specific heat
J/(kg K)
Latent heat of vaporisation (J/kg) Pressure of saturation (Pa) Surface tension coefficient (M/m) Diameter (m) Initial temperature (K) Initial velocity (m/s)
995 4179 24.25 E5 4858 0.072 4.0 E-5 305 (-10.,10.,0.)

      3.2-Modelling strategy

      The following modelling strategy model is adopted :

      3.3-Computing and results.

            Here are some results :

fig 1 : Trajectories of particles with liquid spray injection location (red ball)

fig  2 : Vapour concentration & plot tracks

                                                                                                                             fig 3 :  Vapour concentration at z= 0.4

 fig 4 :  Vapour concentration at z= 0.8


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