Solidifying Chamber Simulation, Solidification of Molted Steel
In this project, the solidification process of molten steel inside a solidifying chamber is investigated.
This ANSYS Fluent project includes CFD simulation files and a training movie.
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Solidification, also known as freezing, is a phase change of matter that results in the production of a solid. Generally, this occurs when the temperature of a liquid is lowered below its freezing point. Solidification is nearly always an exothermic process, meaning heat is released when a liquid changes into a solid. Therefore, to accelerate the solidification process, the heat transfer rate must be increased, and this can be done using different coolants to take the heat away from the solidifying matter.
Solidifying Project Description
In this project, the solidification process of molten steel inside a solidifying chamber is investigated. Water is used to lower the molten steel’s temperature and to accelerate the solidification process. The simulation is done using the VOF model for the three phases of air, water, and steel. The standard k-epsilon model using standard wall functions is applied for solving the turbulent flow inside the canal. The energy model is also activated.
Solidifying Chamber Geometry and Mesh
The geometry for analyzing this simulation consists of a chamber in which water is injected and molten steel enters inside this canal to lose its temperature and solidification. Geometry is designed in ANSYS design modeler® and is meshed in ANSYS meshing®. The mesh type is unstructured and the total element number is 560362.
The following figure shows the geometry of the modeled solidifying chamber
The following figure shows the mesh of the modeled solidifying chamber
Solidifying CFD simulation settings
The assumptions considered in this project are:
- Simulation is using a pressure-based solver.
- The present simulation is transient. 500 time-steps with a step size of 1 second are exploited for this simulation.
- The effect of gravity has been taken into account and is equal to -9.81m/s2 in the Y direction.
The applied settings are recapitulated in the following table.
|near-wall treatment||standard wall function|
|Water inlet(both inlets)||Mass flow rate||16 Kg/s|
|wall motion||stationary wall|
|Heat flux||0 W/m2|
|turbulent kinetic energy||first-order upwind|
|turbulent dissipation rate||first-order upwind|
|gauge pressure||0 Pa|
|velocity (x,y,z)||0 m/s-1|
|Turbulent kinetic energy||1 m2/s2|
|Turbulent dissipation rate||1 m2/s3|
At the end of the solution we obtain contours of temperature, velocity, pressure, and enthalpy.
All files, including Geometry, Mesh, Case & Data, are available in Simulation File. By the way, Training File presents how to solve the problem and extract all desired results.