Solar Water Desalination by Species Transport, 2-D

$330.00 Student Discount

  • The problem numerically simulates the Solar Water Desalination using ANSYS Fluent software.
  • We design the 3-D model by the Design Modeler software.
  • We mesh the model with ANSYS Meshing software.
  • The mesh type is Structured, and the element number equals 16000.
  • We perform this simulation as unsteady (Transient).
  • We use the Species Transport model to define 3 different species.
  • We use a UDF to define mass transfer rate in the form of evaporation-condensation.
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If you need the Geometry designing and Mesh generation training video for one product, you can choose this option.
If you need expert consultation through the training video, this option gives you 1-hour technical support.
The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
The MR CFD certification can be a valuable addition to a student resume, and passing the interactive test can demonstrate a strong understanding of CFD simulation principles and techniques related to this product.


Solar Water Desalination 2-D (Species Transport) , ANSYS Fluent CFD Simulation Training

The present study investigates the performance of a solar-still thermal desalination unit by ANSYS Fluent software. The current model consists of a small chamber with a sloping glass surface at the top. The resulting vapor impacts the cold glass surface and undergoes a distillation process. Pure water from hot vapor distillation moves down the slope of the glass plate and discharges as pure water.

One of the thermal methods of water desalination is using solar desalination units. In solar water desalination, solar energy is used as a heat source and causes the evaporation process. In the functional mechanism of this type of desalination, surface evaporation occurs by solar energy. The produced vapor collides with the cold surface of the glass and converts to pure water after distillation.

Desalination Methodology

The solar heat passes through the glass to the water’s surface in the enclosure and causes surface evaporation (applying a UDF for surface evaporation).

The Species Transport method is used. This method does not simulate saline water flow in the device. Unlike multiphase simulations with much heavier computations, this method assumes that there is a mixture of air and vapor inside the chamber interior.

The simulation focuses solely on the amount of vapor produced in the system. The present study aims to investigate the amount of vapor produced on the water surface and the cold surface of the sloping plate.

Also, the solver is Steady-State. The present 2-D model was designed by Design Modeler software. The geometry consists of a sloping glass surface at the top and a horizontal water plate at the bottom. A Structured mesh was performed using ANSYS Meshing software. The element number is 16,000.

Desalination Conclusion

This method assumes a mixture of air and vapor inside the chamber interior and does not simulate distilled water flow.

In fact, at the beginning of the simulation, the space inside the chamber is filled with air only; the bottom plane of the chamber is considered the surface of the water, and since the water evaporates on the surface, it is assumed that the surface consists of vapor.

It is also assumed that the sloping plate where the steam collides is composed only of vapor. So water and air mass fraction contours completely show the evaporation in the device.


  1. Dr. Tiffany Murray IV

    I have used MR-CFD tutorials before, which are mostly excellent. I needed this training.
    Of course, please prepare training about nanofluid.

  2. Marques Wolff

    Can this simulation be used for other types of solar desalination systems?

    • MR CFD Support

      While this simulation is specifically designed for a solar still, the underlying principles and models can be adapted for other types of solar desalination systems.

  3. Prof. Shyanne McDermott Jr.

    Is it possible to change the design of the solar still in the simulation?

    • MR CFD Support

      Yes, the design parameters of the solar still can be modified in the simulation to suit your specific requirements or to optimize the design.

  4. Shanel Baumbach

    Can this simulation model account for different weather conditions?

    • MR CFD Support

      Yes, the simulation can be adapted to account for various environmental conditions. However, such customizations may require additional computational resources.

  5. Payton Muller

    Thank you Sir. I tried this but I am getting error: floating point exception after pressing calculate. Error object #f is being shown. How do I fix it?

    • MR CFD Support

      May be error with your meshing… Please check quality of your mesh.

  6. Kayden Stokes V

    Please also teach about melting and solidification.

  7. Saige Armstrong

    Can I use this simulation for academic research?

    • MR CFD Support

      Yes, this simulation can be a valuable tool for academic research in the field of solar desalination. It can help in understanding the underlying phenomena and in developing more efficient desalination systems.

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