Posted: November 20th, 2015

Fluid Mechanics

Fluid Mechanics

Project Objective: The goals of this project are to
(1) Perform a CFD analysis of fluid flow through or past a simple object for which there
is an analytical solution. A mesh convergence study should be performed to confirm
that the results are not mesh dependent.
(2) Perform a parametric study in which one parameter is varied (e.g. fluid viscosity, pipe
diameter, etc.) and analyze its effect on the fluid flow. At least 3 different variations
of the parameter must be studied.
(3) Verify the CFD results by calculating the expected results using equations learned in
class (i.e. analytical solution).
(4) For extra credit (up to 5 points), modify your simple object into a real-world object,
and analyze the fluid flow for a specific real-world problem. Clearly state the goal of
the analysis.

• In a few sentences, describe your proposed parametric study: (1) What type of flow
will be modeled (internal, external, geometry of the problem)? (2) What parameter
will be varied in the parametric study? (3) What flow condition (velocity, pressure,
etc.) will be analyzed?
• If you plan to do the extra credit, describe the flow problem that you plan to analyze,
and the goal of your CFD analysis.
Report Criteria: The report should include the following sections:
I. Title Page (5 points)
a. Group members names
b. Descriptive title
c. Appealing image of one of the simulation screen captures
II. Introduction (10 points)
a. Describe the objective of the study and how it can be applied to better understand
a real-world problem
III. Methods (10 points)
a. Drawing of model(s) with dimensions
b. List the initial conditions, boundary conditions, and any other important
parameters
c. Describe the mesh convergence study (i.e. number of cells used in each analysis)
d. Describe the parametric study (i.e. state which parameter was varied and by how
much, which flow condition was measured, etc.)
e. (Extra credit) Describe the model, flow conditions, analysis method of the real world
problem
IV. Results (10 points)
a. Plot showing the results of the mesh convergence study
b. Plots/graphs showing the results of the parametric study. The changes in at least
one flow condition (e.g. velocity, pressure, etc.) must be quantified.
c. Verification of results. Work out the analytical solution to your flow problem
(making any necessary simplifications to achieve an exact solution) and compare
the results to the simulation results. Do this for all variations in the parametric
study. All equations used to derive the analytical solution must be explained in
the report.
d. (Extra credit) Represent the results of the real-world problem in figures or tables.
Animated movies may also be created and submitted as separate files. These
movies should be described in the report.
V. Discussion (10 points)
a. Discuss the results of the mesh convergence study and the expected accuracy of
your results. Also, comment on the computational time of the CFD simulations.
b. Discuss what was learned from the parametric study
c. Discuss any differences between the analytical solution and the simulation results
d. (Extra credit) Discuss the significance of the results of the simulated real-world
problem
VI. Conclusion (5 points)
a. Summarize the main results of the study
There is no required length for the report, but all report criteria described above must be
included. All figures should be properly labeled and include a descriptive caption (2 -5
sentences). Any references used in the study must be cited using a standard reference style.

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