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Steam Jet Simulation

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Old   April 6, 2022, 07:50
Default Steam Jet Simulation
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Hello everyone,

I'm simulating steam injected horizontally through a nozzle into a water bath. My problem that I have is that the energy residuals start to increase and go up to more than 10e+25. Why could it be that I am having this problem?
My model conditions are as follows:
-Solver Pressure-Based
-Steady State simulation
-Gravity in the direction -y

-Eulerian Multiphase Model, Implicit Formulation
-two phases (water-liquid and water-vapor like ideal gas)
-Drag Coefficient (symmetric)
-Heat Transfer Coefficient (two-resitance, hughmark for liq and zero-resistance for vap)
-Mass Transfer Mechanism (evaporation-condensation with Thermal Phase Change Model)
-Interfacial Area (ia-particle)
-k-epsilon Realizable

-Saturation Temperature = 416.76K
-Saturation Pressure = 0.4 MPa
Boundary Conditions:
Gaude Total Pressure (0.4 MPa)
Supersonic/Initial Gauge Pressure (0.399 MPa)
Volume Fraction Vapor = 1
-Pressure Outlet
Gauge Pressure (10200 Pa)
Backflow Volume Fraction Vapor = 0
Temperature (300 K)
All others boundary are trated like wall

Solution Methods:
-Pressure-Velocity Coupling Scheme = Phase Coupled SIMPLE

-Spatial Discretization is First Order Upwinde, xcept for Pressure which is Second Order and Gradient which is Least Squares Cell Based

If anyone can help me I would be very grateful.
Yaisel is offline   Reply With Quote


condensation, energy residuals, steam jet, water

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