This document summarizes the proceedings of the CHiMaD Phase Field Methods Workshop III & Hackathon held from May 3-5, 2016 at Pennsylvania State University. It includes questions and answers from the workshop. Question 1 involves simulations of phase field evolution, calculating tip velocity over time, and summarizing the workflow. Question 2 discusses energy over time for multi-phase simulations, 2D and 3D representations of results, measuring aspect ratios, and the workflow for coupled phase field and tensor mechanics simulations. Details of computational resources used are also provided.

1. PENNSYLVANIA STATE
UNIVERSITY
M. Tonks, I. Greenquist, K. Momeni
Mechanical Engineering Department, Pennsylvania State University
CHiMaD Phase Field Methods Workshop III & Hackathon
MAY 3-5, 2016

2. Question 1

3. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1—a – Movie of Evolution

4. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1—a – Movie of Evolution

5. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1—a – Mobility

6. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1—b – Movie of Evolution

7. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1—b – Movie of Evolution

8. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1—b – Mobility

9. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1—c – Movie of Evolution

10. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1—a – Tip Velocity vs Time
• Assume shape is
circular
• Calculate Area
• Solve for radius
y = 0.0107x + 2.0866
R² = 0.9939
0
1
2
3
4
5
6
7
0 100 200 300 400 500
Radius
Time
20x20 Bounding Box
y = 0.0026x + 4.7168
R² = 0.9996
0
5
10
15
20
25
30
35
0 2000 4000 6000 8000 10000 12000
Radius
Time
100x100 Bounding Box

11. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1 – Workflow (flowchart)
Define the domain
geometry
Selecting modules (Phase
Field)
Define variables
Define auxiliary variables and
kernels (for postprocessing)
Choosing the
time integrator
Run

12. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q1 – Details
• # cores: 8
• Core Hours: 1.5
• Wall clock time: 11 min
• All files can be found in Dropbox folder

13. Question 2

14. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q2 – Energy vs “Time” (Plot)
The 3D simulations were not long enough to make meaningful changes.

15. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q2 – 2D representation of result
Problem 2-a Problem 2-cProblem 2-b

16. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q2 – 3D representation of result
Problem 2-a Problem 2-cProblem 2-b

17. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q2 – Measurement of Aspect Ratio along
principal directions
• Specify how you measured these dimensions
The 3D simulations were not long enough to make meaningful changes.

18. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q2 – Workflow (flowchart)
Define the domain
geometry
Selecting modules (Tensor
Mechanics +Phase Field)
Define variables
Define auxiliary variables and
kernels (for postprocessing)
Choosing the
time integrator
Run

19. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Q2 – Details
• # cores: 24
• Core hours: 24
• Wall clock time: 1:00:00
• Computation time:
• All files can be found in Dropbox folder

20. CHiMaD Phase Field Methods Workshop III & Hackathon – MAY 3-5, 2016
Questions?