Submarine Robot motion in a Water Channel, Dynamic Mesh, ANSYS Fluent

$210.00 Student Discount

The present problem simulates the movement of a submarine robot inside a canal containing water flow using ANSYS Fluent software.

Click on Add To Cart and obtain the Geometry file, Mesh file, and a Comprehensive ANSYS Fluent Training Video. By the way, You can pay in installments through Klarna, Afterpay (Clearpay), and Affirm.

To Order Your Project or benefit from a CFD consultation, contact our experts via email ([email protected]), online support tab, or WhatsApp at +44 7443 197273.

There are some Free Products to check our service quality.

If you want the training video in another language instead of English, ask it via [email protected] after you buy the product.

Special Offers For Single Product

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.


Project Description

The present problem simulates the movement of a submarine robot inside a canal containing water flow using ANSYS Fluent software. The dynamic mesh method has been used to simulate the horizontal movement of this robot inside the channel. In this simulation, a two-dimensional channel is designed to flow at a speed of 1.5 m.s-1. Simultaneously, the robot inside the canal moves horizontally in the water flow path at a speed of 3 m.s-1. Due to the fact that this robot is moving within the computational domain and thus affects the grids around it, so we need a momentary and time-dependent change in meshing based on the type of displacement in the adjacent boundaries of grids.

Therefore, to define the instantaneous change of meshing, the Dynamic Mesh model has been used. In the determination of dynamic mesh methods, smoothing and remeshing methods have been used. According to the smoothing method, the number of nodes connections does not change and only adjusts the mesh of an area by moving or deforming the borders. The remeshing method, on the other hand, is used when the displacement of the borders is large relative to the size of the local cells to regenerate the destructive cells of the critical size limit.

(Project Description)

In the definition of areas under the dynamic mesh, the wall part of the robot is defined as a rigid body. This means that the robot’s body acts as a rigid and integrated body and can be moved rotationally. This rigid body behavior means that the body itself does not change and only the meshing of the surrounding areas changes over time. Since the robot only moves horizontally at a certain speed, a profile is used to define this type of movement. This profile indicates the speed of the robot in the horizontal direction at different times. Due to the dependence of the dynamic mesh method over time, the present simulation process is defined as unsteady; So that the simulation is done in 1.5 seconds with a time step equal to 0.01 seconds.

Submarine Robot Geometry & Mesh

The present model is designed in two dimensions using Design Modeler software. The model is a two-dimensional channel in which a rectangular robot is placed. The channel has a length of 5 m and a width of 0.5 m. Also, the robot inside the channel has a length and width of 0.22 m and 0.27 m, respectively.


We carry out the model’s meshing using ANSYS Meshing software. The mesh type is unstructured. The element number is 2221. To better understand the mesh changes over time due to the use of the dynamic mesh method, we present several views for meshing at different times.

submarine robot

Submarine Robot CFD Simulation

We consider several assumptions to simulate the present model:

  • We perform a pressure-based solver.
  • The simulation is unsteady.
  • We ignore the gravity effect.

The following table represents a summary of the defining steps of the problem and its solution:

Viscous k-epsilon
k-epsilon model standard
near wall treatment standard wall function
Dynamic Mesh On
mesh methods smoothing & remeshing
Boundary conditions
Inlet Velocity Inlet
velocity magnitude 1.5 m.s-1
Outlet Pressure Outlet
gauge pressure 0 pascal
Walls Wall
wall motion stationary wall
Pressure-Velocity Coupling SIMPLE
pressure second order
momentum second order upwind
turbulent kinetic energy first order upwind
turbulent dissipation rate first order upwind
Initialization methods Standard
gauge pressure 0 pascal
velocity (x,y) 0 m.s-1


At the end of the solution process, we obtain two-dimensional contours related to velocity and pressure. Because the simulation is transient, we obtain contours at different times to compare the results over time. The contours show well that the robot in the channel has a horizontal movement and, over time, moves inside the channel containing the water flow. Also, due to the presence of the submarine robot body as a barrier in the flow of water inside the canal, a high-pressure area is created behind the submarine robot, and a high-speed area is created in front of it.


There are no reviews yet.

Leave a customer review

Your email address will not be published. Required fields are marked *

Back To Top
Whatsapp Call On WhatsApp