The Design – Ansys CFX Stationary Simulation | Water Liquid
The motion of objects in the fluid has always been interesting for scientists. Although the movement of objects in the air has been more considered than before, this movement has been reviewed in different fluids. Falling caused by gravity is also one of the most important moving modes. Falling objects in different fluids can be a great help in analyzing this behavior. Water is one of the most important fluids that need to be considered.
In this analysis, it has been tried to simulate and analyze the fluid flow around two cubes falling into a fluid in stationary mode, using Ansys CFX software.
Geometry & Grid
The geometry required for this analysis was generated by Ansys Design Modeler software. The meshing required for this analysis was also generated by Ansys Meshing software. The mesh type used in this analysis is unstructured. The total number of volume properties for this geometry is 2.9473e+009 mm³.
In this analysis, a steady-state analysis type was used to obtain the results to check the fluid flow. In this analysis, non-buoyant models have been used and stationary domain motion has also been activated in this analysis. In this analysis, a k-Epsilon model was used to study the water flow and thermal energy fluid models of the heat transfer.
In this analysis, the flow inlet, which only includes the water, is defined as two velocity inlet. The normal speed value of mass and momentum velocity inlet 1 is 0.1 [m s^-1] and the normal speed value of mass and momentum velocity inlet 2 is 0.4 [m s^-1]. The turbulence of the design modeler is set as a medium with an intensity equal to 5 %. The heat transfer is considered a static temperature. The static temperature of heat transfer is 50 [C].
In this analysis, static pressure has been used to determine the mass and momentum in the material fluid and particle basic settings of the design modeler. And the relative pressure value of mass and momentum is 100000 [Pa].
Discretization of Equations
In this analysis, high-resolution is used for the advection scheme of the basic settings. In this analysis, the first-order is used for turbulence numerics. In this analysis, the residual type of convergence criteria is RMS and the residual target of convergence criteria is 1.E-4.
The results are presented as velocity contours as well as streamlines.
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