Water Spraying from the Roof of the Greenhouse, Ansys Fluent Simulation Training
In this project, water spraying from the roof of the greenhouse has been simulated and the results of this simulation have been investigated.
This product includes Geometry & Mesh file and a comprehensive Training Movie.
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Water Spraying Project Description
In this project, numerical simulation of water spraying from the roof of the greenhouse has been done using Ansys Fluent software. The system consists of two different fluids, including air as the primary fluid and one secondary fluid is water. The Eulerian VOF model has been used. The jet-air is entering the domain with the speed of 0.3 m/s with gravity considered as -9.81 m/s-2 on the y-axis.
Geometry & Mesh
The 2-D geometry of the present model is carried out using Design Modeler software. The geometry consists two-section, the lower section is resident water, and the upper section contains outlet and velocity inlet; tank sides are considering as wall.
The meshing of this present model has been generated by Ansys Meshing software. The mesh grid is unstructured with no element quality lower than 0.68, and the total cell number is 208921. the figure below shows an overview of the performed mesh.
Water Spraying CFD Simulation
To simulate the present model, several assumptions are considered, which are:
- The solver is pressure-based.
- Simulation has only examined fluid behavior; in other words, heat transfer simulation has not been performed.
- The effect of gravity on the flow is considered to be 9.81 m.s-2 and along with the y-axis in the present model.
The following is a summary of the steps for defining the problem and its solution.
|shear flow corrections||k-omega options|
|0||initial gauge pressure||mixture|
|0.3 m/s||velocity magnitude||water|
|1||backflow volume fraction||air|
|0||backflow volume fraction||water|
|stationary wall||wall motion|
|Phase coupled||pressure-velocity coupling|
|first-order upwind||specific dissipation rate|
|first-order upwind||volume fraction|
|0.3 m/s||water velocity (0,y,0)|
|0 m/s||air velocity (x,y,z)|
|1||the secondary phase volume fraction|
At the end of the solution process, two-dimensional and three-dimensional velocity, air, and water volume fraction are obtained. This 2-D simulation show water starts to pump in conservatory roof watering system nozzles, and drops down and covers the soil surface fully to activate correctly.
You can obtain Geometry & Mesh file and a comprehensive Training Movie which presents how to solve the problem and extract all desired results.