The document summarizes an Ansys CFD simulation of film cooling effectiveness comparing different shaped cooling holes. It discusses that CFD uses numerical methods to solve complex fluid flows and is used in aerospace, sanitation, medicine, and more. The simulation process in Ansys 15.0 includes CAD modeling, meshing, setup of variables like momentum and boundaries, solution of the mesh, and results analysis including velocity, vorticity, and temperature contour comparisons to experimental data. The simulation aimed to match results from a dissertation on film cooling effectiveness of different hole shapes.

1. Ansys 15.0 CFD Processing
SURP 2015
Matt Goodman | Victor Heinen | Josh Solberg
Advisor: Dr. Emin Issakhanian

2. What is Computational Fluid Dynamics (CFD)?
Uses numerical methods to solve
complex fluid flows
Used in:
Aerospace
Sanitation
Medicine
Alternative energy
Climate modeling
Turbomachinery

3. Film-cooling effectiveness
Film cooling: uses cool air flowing
through a hole to form a barrier
between the material and hot fluid
Dr. Issakhanian’s dissertation compared
the film cooling effectiveness of
different shaped holes
We tried to duplicate these results using
ANSYS Fluent 15.0

4. CFD Process
There are many methods, which can be chosen
based on the desired results
We used Ansys 15.0
● CAD Modeling
● Meshing
● Setup
● Solution
● Results

5. Geometry
The 3D (CAD) model of the fluid flow was created in SolidWorks
Main Flow Channel
Plenum
(Source of cool water)
Hole for cool water to
combine with main flow

6. Meshing
A CAD model is sliced into many individual (finite) elements that can be analyzed
using Finite Element Methods (FEM).
Meshes can be coarse (large elements) or fine (small elements) depending on the
required accuracy and the power of the computer.

7. Meshing

8. Setup - Input variables to define the flow being modeled
I.e. Is the flow Hot or Cold? Moving or Still? Water or Oil?
Momentum of fluid
Turbulence
Pressure
Mass flow rate
Boundary conditions
Temperature throughout fluid
Details of interaction between wall and fluid

9. Momentum and Boundary Conditions
Input
Temperature
Input

10. Setup - Input variables to define the flow being modeled
Flow Material
Water
Air
Refrigerant
Solution methods - (1st order vs 2nd order
equations etc.)
Determines amount of computational power put into
solution of mesh
Higher order solution methods increase the accuracy
Initialization

11. Solution
The program runs
numbers until all
residuals fall
below a chosen
value

12. Results
3 parameters were measured to try to match the results from Dr. Issakhanian’s
dissertation, and a 4th one was found
1. Velocity contours at the exit hole
2. Velocity contours at the midplane of the main flow
3. Vorticity comparison at a YZ-plane located at X/D = 2 (approximately 2cm) away
from the exit hole
4. Temperature contours on the bottom plane of the main flow channel

13. 1.Exit Hole Velocity
Experimental Computational

14. 2. Main Flow Velocity Contours
Experimental
Computational

15. 3. X/D = 2 Vorticity Comparison
● Vorticity comparison in the YZ Plane at X/D=2
(approx 2cm) away from the exit hole
ComputationalExperimental

16. 4. Surface Temperature

17. Thank You For Your Time
Questions?