Water Infiltration into a Porous Concrete Block, ANSYS Fluent Simulation Training
Price: $24
- The problem numerically simulates Water infiltration into a porous concrete block using ANSYS Fluent software.
- We design the 3-D model by the Design Modeler software.
- We Mesh the model by ANSYS Meshing software, and the element number about 1million.
- We perform this simulation as unsteady (Transient).
- We use the Porous medium to study water infiltration into a porous concrete block.
- We use the VOF Multi-Phase model to define two-phase flow inside a concrete block.
Water Infiltration into a Porous Concrete Block, ANSYS Fluent Simulation Training
Price: $24
- The problem numerically simulates Water infiltration into a porous concrete block using ANSYS Fluent software.
- We design the 3-D model by the Design Modeler software.
- We Mesh the model by ANSYS Meshing software, and the element number about 1million.
- We perform this simulation as unsteady (Transient).
- We use the Porous medium to study water infiltration into a porous concrete block.
- We use the VOF Multi-Phase model to define two-phase flow inside a concrete block.
Water infiltration into a porous concrete block
Description
In this project, I performed a simulation using ANSYS software to study a multiphase flow inside a porous cube. The main objective was to analyze the behavior of air and water within a porous medium using the Volume of Fluid (VOF) model. The simulation considered transient and pressure-based conditions to observe how water interacts with air under a specified inlet pressure. The project involved four main stages: geometry creation, meshing, solver setup, and post-processing to visualize flow and pressure distributions.
Geometry and Mesh
The geometry was created in ANSYS DesignModeler as a cube with dimensions of 0.15 m × 0.15 m × 0.15 m. The inlet area was defined as 0.0038472951 m². After completion, the geometry was imported into ANSYS Meshing, generating a structured hexahedral mesh with approximately 1 million elements. This mesh type was selected for its accuracy and numerical stability in capturing multiphase interactions. The generated mesh is shown in the figure above, effectively representing the cube and maintaining an adequate cell density near the boundaries.
Model and Solver Settings
The simulation was carried out in ANSYS Fluent using a pressure-based and transient solver. The Standard k–ε turbulence model was chosen to account for turbulent effects. A multiphase flow model based on the Volume of Fluid (VOF) approach was used, where air was defined as the primary phase and water as the secondary phase. A porous zone was included in the domain, with an assumed particle diameter (Dp) of 0.0005 m. The pressure inlet boundary condition was set to 500,000 Pa, allowing water to enter the cube. The SIMPLE algorithm was applied for pressure–velocity coupling to ensure solution stability and convergence during the 15-second simulation period.
Results
The results show the formation and interaction of air and water phases within the cube over time. The VOF contours indicate the water volume fraction distribution, where water gradually rises inside the porous region while displacing air. The air volume fraction plots highlight the separation interface between the two phases. The velocity contours reveal that the maximum velocity occurs near the inlet region, while the upper area of the cube remains mostly stationary. The pressure distribution results show a gradual decrease from the inlet to the outlet region, confirming the expected fluid behavior through the porous medium. The simulation successfully demonstrates multiphase fluid interaction under transient conditions in a porous cube domain.