## Problem:

The overall dimensions of the rectangular box will depend on the dimension of the underwater vehicle.

[Please use any dimensions and make a model similar to the above drawing]

The fluid flowing through the rectangular domain is water, with the following properties:

Density = 1000 kg/m3, Dynamic viscosity = 1.002 mPa.s

The boundary conditions for all the CFD models are:

Inlet velocity, U= 15 m/s; 40 m/s; 70 m/s Outlet Pressure = 0, Velocity at walls = 0 m/s (no slip)

Flow = Turbulent using default settings. Procedure and discussion points:

1.Create a geometry in DesignModeler/ Solidwroks/any CAD software

2.Build an appropriate mesh for the model. This will necessitate to run the simulations and make a grid refinement study presenting the results for different grids for U= 15 m/s.

3.Using the converged grid, for U = 15 m/s, check the iterative

4.Using the converged grid, run CFX/FLUENT for U = 15 m/s, 40 m/s, and 70 m/s.

5.Chart the axial velocity profiles u(y) at the leading edge, at mid, at the trailing position of the vehicle and discuss your results.

6.Plot the velocity contours for U = 15 m/s, 40 m/s, and 70 m/s and discuss the flow characterization.

7.Plot the velocity vector for U = 15 m/s, 40 m/s, and 70 m/s and discuss

8.Plot the turbulence intensity for 15 m/s, 40 m/s, and 70 m/s and discuss

9.Plot the turbulence kinetic energy for U= 15 m/s, 40 m/s, and 70 m/s and discuss your

10.Plot the pressure contour for U= 15 m/s, 40 m/s, and 70 m/s and discuss your

11.Plot the velocity streamline for U= 15 m/s, 40 m/s, and 70 m/s and discuss your

12.Calculate the drag and lift coefficient for U = 15 m/s, 40 m/s, and 70 m/s and plot the results.

13.Verify your results with the existing findings.