Ventilated Air Cavity CFD Simulation by ANSYS Fluent Training
In this project, steady air flow over a ventilated air cavity is investigated.
This product includes a Mesh file and a comprehensive Training Movie.
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In this project, steady air flow over a ventilated air cavity is investigated. Simulated cavity has a hole which extends in flow direction all over the cavity length and makes the simulation more challenging. Fluid flow over objects is of great importance since the results are useful in several branches of fluid mechanics such as aerodynamics. Built-in hole in the cavity geometry enables flow penetration inside the cavity and reduces the pressure drop between upstream and downstream of the cavity which as a result decreases the drag force exerted on the cavity by the air flow. Air flow velocity at inlet boundary condition is equal to 1.7 m/s. due to high flow velocity, K-epsilon turbulence model is chosen for solving fluid flow domain equations. Maximum velocity captured in the domain is equal to 2.32 m/s which occurs on the leading edge of cavity.
Geometry and mesh
Geometry of fluid domain is designed in Design Modeler and computational grid is generated using Ansys Meshing. Mesh type is unstructured and element number is 803616.
- Solver type is assumed Pressure Based.
- Time formulation is assumed Steady.
- Gravity effects is neglected.
The following table a summary of the defining steps of the problem and its solution.
|Models (Ventilated Air Cavity)|
|Materials (Ventilated Air Cavity)|
|Fluid||Definition method||Fluent Database|
|X velocity||1.7 m/s|
|Hydraulic diameter||1.7 m|
|Solver configurations (Ventilated Air Cavity)|
|Spatial discretization||Gradient||Least square cell-based|
|Momentum||Second order Upwind|
|K||First order Upwind|
|Epsilon||First order Upwind|
Results and discussion
Air mass flow rate at outlet is equal to 6.747232 kg/s. Drag force for cube is equal to 0.0001168629 N.
There are a Mesh file and a comprehensive Training Movie that presents how to solve the problem and extract all desired results.