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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,143 @@ | ||
| <?xml version="1.0"?> | ||
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| <RD format_version="6"> | ||
| <description> | ||
| The shallow water equations: | ||
|
|
||
| da/dt = - depth * (db/dx + dc/dy)<br> | ||
| db/dt = - g * da/dx - k * b<br> | ||
| dc/dt = - g * da/dy - k * c<br> | ||
|
|
||
| where: | ||
|
|
||
| a is the height of water surface<br> | ||
| b is the x-component of the water velocity<br> | ||
| c is the y-component of the water velocity<br> | ||
| d is the base height<br> | ||
| g is the force of gravity<br> | ||
| k is the viscosity | ||
| </description> | ||
| <rule name="Shallow water equations" type="formula" wrap="0" neighborhood_type="vertex"> | ||
| <param name="timestep"> | ||
| 0.01 | ||
| </param> | ||
| <param name="g"> | ||
| 9.8 | ||
| </param> | ||
| <param name="k"> | ||
| 0.03 | ||
| </param> | ||
| <formula number_of_chemicals="4" block_size_x="4" block_size_y="1" block_size_z="1" accuracy="medium"> | ||
| delta_a = - max(0, a - d) * (x_gradient_b + y_gradient_c); | ||
| delta_b = - g * x_gradient_a - k * b; | ||
| delta_c = - g * y_gradient_a - k * c; | ||
| </formula> | ||
| </rule> | ||
| <initial_pattern_generator apply_when_loading="true" zero_first="true"> | ||
| <overlay chemical="a"> | ||
| <add/> | ||
| <gaussian height="1" sigma="0.05"> | ||
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| <everywhere/> | ||
| </overlay> | ||
| <overlay chemical="d"> | ||
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| <everywhere/> | ||
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| <overlay chemical="d"> | ||
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| <color_low r="0" g="0" b="1"/> | ||
| <color_high r="1" g="0" b="0"/> | ||
| <show_color_scale value="true"/> | ||
| <show_multiple_chemicals value="true"/> | ||
| <active_chemical value="a"/> | ||
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| <high value="1"/> | ||
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| <show_chemical_label value="true"/> | ||
| <slice_3D value="true"/> | ||
| <slice_3D_axis value="z"/> | ||
| <slice_3D_position value="0.5"/> | ||
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| <color_displacement_mapped_surface value="false"/> | ||
| <use_image_interpolation value="true"/> | ||
| <timesteps_per_render value="128"/> | ||
| <show_phase_plot value="false"/> | ||
| <phase_plot_x_axis value="a"/> | ||
| <phase_plot_y_axis value="b"/> | ||
| <phase_plot_z_axis value="c"/> | ||
| <plot_ab_orthogonally value="false"/> | ||
| </render_settings> | ||
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