docs:tutorial
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| ====== Channelflow Tutorial ====== | ====== Channelflow Tutorial ====== | ||
| - | |||
| - | ===== Intro ===== | ||
| So you've installed channelflow. Now what? Well, computational fluid | So you've installed channelflow. Now what? Well, computational fluid | ||
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| Please refer to [[:docs#utilities|Utilities]] and [[docs:utils:options|Utility Options]] | Please refer to [[:docs#utilities|Utilities]] and [[docs:utils:options|Utility Options]] | ||
| - | for a detailed guide of individual utilites and their options. You can also run any | + | for a detailed guide of individual utilities and their options. You can also run any |
| utility with a ''-h'' or ''--help'' option to get a brief description of the | utility with a ''-h'' or ''--help'' option to get a brief description of the | ||
| utility's purpose and options, e.g | utility's purpose and options, e.g | ||
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| ===1. Generate an initial condition and examine its properties === | ===1. Generate an initial condition and examine its properties === | ||
| - | gibson@akbar$ randomfield -Nx 48 -Ny 35 -Nz 48 -lx 0.875 -lz 0.6 -m 0.20 u0.ff | + | gibson@akbar$ randomfield -Nx 48 -Ny 33 -Nz 48 -lx 2 -lz 1 -m 0.20 u0.ff |
| This command generates a no-slip, divergence-free velocity field with | This command generates a no-slip, divergence-free velocity field with | ||
| - | random spectral coefficients on a 48 x 35 x 48 grid, on [0, 2pi] x | + | random spectral coefficients on a 48 x 33 x 48 grid, on [0, 2pi] x |
| [-1, 1] x [0, pi], with magnitude 1/V \integral_V |u|^2 dx = 0.2. The | [-1, 1] x [0, pi], with magnitude 1/V \integral_V |u|^2 dx = 0.2. The | ||
| field is a perturbation from the laminar flow --by default, velocity | field is a perturbation from the laminar flow --by default, velocity | ||
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| couette -T0 0 -T1 400 -o data-LBp01 LBp01ef1 | couette -T0 0 -T1 400 -o data-LBp01 LBp01ef1 | ||
| - | couette -T1 0 -T1 400 -o data-LBm01 LBm01ef1 | + | couette -T0 0 -T1 400 -o data-LBm01 LBm01ef1 |
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| From here you can adapt the [[#make_a_movie_from_extracted_data|movie-making instructions]] from above. | From here you can adapt the [[#make_a_movie_from_extracted_data|movie-making instructions]] from above. | ||
| + | |||
| ===== Project movie data onto state-space coordinates ===== | ===== Project movie data onto state-space coordinates ===== | ||
docs/tutorial.1234540698.txt.gz ยท Last modified: 2009/02/13 07:58 by gibson
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