The Design – Ansys Fluent Multiphase | Three-Phase Flow
This hexagon tube is based on the vortex force produced by its hexagonal body, which, unlike the simple appearance of the machine, does not have an engine, blade, and movable and electric parts. This device has an exciting and sophisticated performance. One of the interesting issues in this device is that there is at least one movable blade in the usual separators, which are rotated by electromotor force, and produce airflow and separates the small from coarse grains. But in a hexagon tube, hexagonal water flow and oil are separated by its body, which the body is made up of a hexagonal and is curved that acts as a tornado accelerator and accelerates the flow in the curvature of the body and finds the flow of water (fluid) and oil that generates by velocity and temperature.
The hexagon tube performs the separation based on the volume of fluid. So that the flow of water (fluid) separating the oil from the upper wall of the hexagon tube body, which is cylindrical and leads to a hexagon tube, enters the hexagon tube and flows downward. At first swirl in the hexagonal space of the exhaust hexagon tube and the inner surface of the hexagonal part of the hexagon tube, and then in the hexagon tube chamber, thus creating an environmental vortex. This operation increases the velocity and drives water particles along with the oil particles towards the hexagon tube wall and hexagon tube sections. In the hexagon tube section, the flow of water (fluid) changes direction and goes upwards to the outlet hexagon tube. The oil particles separate after contact with water (fluid) particles in the hexagon tube wall fall to the bottom of the hexagon tube and exit through the hexagon tube outlet.
In this analysis, it has been tried to simulate and analyze the water and oil separator flow in a hexagon tube using ANSYS Fluent software.
Geometry & Grid
The geometry required for flow analysis in a hexagon tube that includes the hexagon body is produced by ANSYS Fluent software. The generated grid is also produced by the same software for this geometry, which is entire of an unstructured type. The total number of cells created for this geometry is 1750 quadrilateral cells.
For analysis of the separation process, an explicit scheme volume fraction parameter is used to simulate particles. To analyze the separation of the flow generated by the interaction of this interaction flow, the multiphase model of volume explicit has been used. The explicit scheme is used for volume fraction parameters.
The flow input for this analysis is defined as the VELOCITY INLET for input water is 3 m/s and oil is 0.7 m/s. The walls of the hexagon tube are defined as Wall Motion. The output flow type is PRESSURE OUTLET and the gauge pressure is equal to 1.
Discretization of Equations
The PISO algorithm is used to solve the equations in this analysis. Also, a pressure-based solver for flow is used. The First Order Upwind method has been used to discretize equations. Second-Order Upwind is used only for the discretization of the momentum equations.
In the end, the results are shown as velocity, pressure, and temperature contours.
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