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Computational Astrophysics: The Digital Demo Room One-Dimensional Hydrodynamics Simulator Conley “Lee” Ditsworth under the care and feeding of

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Computational Astrophysics: The Digital Demo Room One-Dimensional Hydrodynamics Simulator Conley “Lee” Ditsworth under the care and feeding of Dr. Charles F. Gammie and close supervision of graduate student Eric Engelhard. http://rainman.physics.uiuc.edu/ddr/oned/index.html. Project Goal.

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Presentation Transcript
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Computational Astrophysics:

The Digital Demo Room

One-Dimensional Hydrodynamics

Simulator

Conley “Lee” Ditsworth

under the care and feeding of

Dr. Charles F. Gammie

and close supervision of graduate student

Eric Engelhard

http://rainman.physics.uiuc.edu/ddr/oned/index.html

project goal
Project Goal

Convert an existing hydrodynamics computer code, written in C by Dr. Gammie, from a stand-alone program to an interactive simulator accessible through internet web browsers

Secondary Goal: Enable future professors teaching graduate-level fluid mechanics a means of assigning additional homework!

…sorry

the code
The Code
  • Original version uses initial conditions file to set up medium and type of wave
  • A perturbation sets the wave into motion
  • Program performs calculations and outputs data to files based on time steps
  • Code must be recompiled for every change in equilibrium conditions or type of wave
steps to successful completion
Steps to Successful Completion
  • Re-write C code to accept input data file
  • Create web pages to guide user and accept inputs (html, cgi script written in Perl)
  • Write program(s) to convert output data first to images and then movie files
  • Make movie files and raw data available through the website
the current situation
The Current Situation
  • Code re-written to take equilibrium conditions from an input data file
  • Interactive website designed to gather inputs and create an input data file
  • Perl script created to run programs
  • Hydrodynamics code executes and creates output data files
current status continued
Current Status Continued…
  • SM (Super Mongo) plotting program converts raw data to ppm image files
  • mpeg encoder program (mpeg2encode) translates images into a movie file
  • Raw data and movie file archived and made available to user through website

Sample Movie

what s left to do
What’s Left To Do?
  • Plotted ppm image files need work
  • How to handle multiple users
  • Expand to have separate simulators for beginner, intermediate and expert level
  • Create a link to all archived files
  • Beautify the website
  • Write paper!
that s all folks
That’s All Folks!

The One-Dimensional Hydrodynamic Simulator Can Be Found At The Digital Demo Room:

http://rainman.physics.uiuc.edu/ddr/oned/index.html

Conley “Lee” Ditsworth

Rm 235 LLP

[email protected] or [email protected]

sorry, no office phone available…

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