Boat Propeller Cavitation CFD Simulation Tutorial

$300.00 Student Discount

  • The problem numerically simulates Boat Propeller Cavitation using ANSYS Fluent software.
  • We design the 3-D model with the Design Modeler software.
  • We mesh the model with ANSYS Meshing software, and the element number equals 2,446,879.
  • The Mixture multiphase model was used to simulate the Cavitation.
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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.



Cavitation is a phenomenon in which the static pressure of a liquid drops below the vapor pressure of the liquid, leading to the formation of small voids filled with vapor in the liquid.

When these cavities are subjected to higher pressures, they collapse and can create shock waves that may damage machinery. These shock waves are strong when close to the bursting bubble, but weaken rapidly as they propagate away from the burst.

Cavitation is an important cause of wear in some engineering fields. Collapsing cavities that explode near the metal surface cause cyclic stress through repeated bursting. This leads to fatigue of the metal surface, which causes a type of wear also called “cavitation”.

The geometry of the present project is designed in Design modeler and meshed in ANSYS Meshing software. The mesh type is unstructured and the element number is equal to 2,446,879.

Boat Propeller Cavitation Methodology

The Mixture multiphase model was used in this project to simulate the cavitation occurring in the vicinity of propeller’s blades. Cavitation occurs due to the pressure drop on one side of the blades. Schnerr-Sauer model has been enabled to simulate the cavitation and vaporization pressure limit was set to 3540 Pa.

Furthermore, SST k-omega model is used to solve for the turbulent fluid equations. This model provides higher accuracies when simulating external flows. The mesh motion option was also enabled to model the propeller’s physical rotation. The present study is performed in transient format and 3D.


As shown in the obtained results, the generated bubbles generated due to cavitation, cover the blades’ suction side entirely and a bit of trailing edge. This indicates that the rotational velocity of the propeller (1500 rpm) is very high, causing the super cavitation phenomenon to occur on the propeller surface.


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