Rotating Disk Effect on Surrounding Airflow CFD Simulation
The present problem simulates a rotating disk in a room using ANSYS Fluent software.
This ANSYS Fluent project includes CFD simulation files and a training movie.
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The present problem simulates a rotating disk in a room using ANSYS Fluent software. The purpose of this work is to investigate the airflow behavior under the influence of rotational motion of a rotating disk. In this simulation, there is an air flow in a computational domain (room) and in the middle of this room, a rotating disk with a certain rotational speed is placed. To define the rotational motion of a disk, the boundary condition of a moving wall with a speed of 5 rad.s-1 must be used.
Rotating Disk in a Room Geometry & Mesh
The present model is designed in three dimensions using Design Modeler software. The geometry of the model consists of a room measuring 0.5 m * 0.5 m * 1 m, in the middle of which there is a rotating disk 0.02 m thick and 0.1 m in diameter.
The meshing of the model has been done using ANSYS Meshing software and the mesh type is unstructured. The element number is 716870. The following figure shows the mesh.
Rotating Disk CFD Simulation
To simulate the present model, several assumptions are considered:
- We perform a pressure-based solver.
- The simulation is steady.
- The gravity effect on the fluid is ignored.
A summary of the defining steps of the problem and its solution is given in the following table:
|wall motion||moving wall|
|wall motion||stationary wall|
|momentum||second order upwind|
At the end of the solution process, we obtain two-dimensional and three-dimensional contours related to pressure, velocity, as well as velocity vectors.
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.