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REQUIRE "atoms.a4l"; |
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(* => atoms.a4l, measures.a4l, system.a4l, basemodel.a4l *) |
| 3 |
REQUIRE "plot.a4l"; |
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(* => plot.a4l, atoms.a4l, measures.a4l, system.a4l, basemodel.a4l *) |
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PROVIDE "vesselPlot.a4c"; |
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(* |
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* This file is part of the ASCEND Modeling Library and is released |
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* under the GNU Public License as described at the end of this file. |
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* |
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* Use of this module is demonstrated by the associated script file |
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* vesselPlot.a4s. |
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*) |
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|
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MODEL vessel( |
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vessel_vol WILL_BE volume; |
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wall_thickness WILL_BE distance; |
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metal_density WILL_BE mass_density; |
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H_to_D_ratio WILL_BE factor; |
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metal_mass WILL_BE mass; |
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); |
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|
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NOTES 'purpose' SELF { |
| 23 |
This model relates the mass of metal in the walls to the diameter |
| 24 |
and height of a thin-walled storage vessel. The vessel is cylindrical |
| 25 |
with two flat ends. Extensive documentation exist for this model to |
| 26 |
teach a new user of ascend how to write, debug, and run ASCEND |
| 27 |
models. |
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} |
| 29 |
END NOTES; |
| 30 |
|
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(* variables *) |
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side_area, end_area IS_A area; |
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wall_vol IS_A volume; |
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H, D IS_A distance; |
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|
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(* equations *) |
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FlatEnds: end_area = 1{PI} * D^2 / 4; |
| 38 |
Sides: side_area = 1{PI} * D * H; |
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Cylinder: vessel_vol = end_area * H; |
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Metal_volume: (side_area + 2 * end_area) * wall_thickness = wall_vol; |
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HD_definition: D * H_to_D_ratio = H; |
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VesselMass: metal_mass = metal_density * wall_vol; |
| 43 |
|
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METHODS |
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|
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METHOD default_self; |
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D := 1 {m}; |
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H := 1 {m}; |
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END default_self; |
| 50 |
|
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METHOD specify; |
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vessel_vol.fixed := TRUE; |
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H_to_D_ratio.fixed := TRUE; |
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wall_thickness.fixed := TRUE; |
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metal_density.fixed := TRUE; |
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END specify; |
| 57 |
|
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METHOD values; |
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H_to_D_ratio := 2; |
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vessel_vol := 250 {ft^3}; |
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wall_thickness := 5 {mm}; |
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metal_density := 5000 {kg/m^3}; |
| 63 |
END values; |
| 64 |
|
| 65 |
END vessel; |
| 66 |
|
| 67 |
MODEL tabulated_vessel_values; |
| 68 |
vessel_volume IS_A volume; |
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wall_thickness IS_A distance; |
| 70 |
metal_density IS_A mass_density; |
| 71 |
|
| 72 |
n_entries IS_A integer_constant; |
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n_entries :== 20; |
| 74 |
|
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H_to_D_ratio[1..n_entries] IS_A factor; |
| 76 |
metal_mass[1..n_entries] IS_A mass; |
| 77 |
|
| 78 |
FOR i IN [1..n_entries] CREATE |
| 79 |
v[i] IS_A vessel(vessel_volume, wall_thickness, |
| 80 |
metal_density, H_to_D_ratio[i], metal_mass[i]); |
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END FOR; |
| 82 |
|
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CurveSet IS_A set OF symbol_constant; |
| 84 |
CurveSet :== ['5 mm']; |
| 85 |
|
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Curves['5 mm'] IS_A plt_curve([1..n_entries], metal_mass, |
| 87 |
H_to_D_ratio); |
| 88 |
|
| 89 |
massVSratio IS_A plt_plot_symbol(CurveSet, Curves); |
| 90 |
|
| 91 |
METHODS |
| 92 |
|
| 93 |
METHOD default_self; |
| 94 |
(* set the title for the plot and the labels for the ordinate and abscissa |
| 95 |
*) |
| 96 |
massVSratio.title := |
| 97 |
'Metal mass of the walls vs H to D ratio for a thin-walled cylindrical vessel'; |
| 98 |
massVSratio.XLabel := 'H to D ratio'; |
| 99 |
massVSratio.YLabel := 'metal mass IN kg/m^3'; |
| 100 |
END default_self; |
| 101 |
|
| 102 |
METHOD specify; |
| 103 |
RUN v[1..n_entries].specify; |
| 104 |
END specify; |
| 105 |
|
| 106 |
METHOD values; |
| 107 |
vessel_volume := 250 {ft^3}; |
| 108 |
wall_thickness := 5 {mm}; |
| 109 |
metal_density := 5000 {kg/m^3}; |
| 110 |
FOR i IN [1..n_entries] DO |
| 111 |
H_to_D_ratio[i] := i/10.0; |
| 112 |
END FOR; |
| 113 |
END values; |
| 114 |
|
| 115 |
METHOD scale_self; |
| 116 |
END scale_self; |
| 117 |
|
| 118 |
END tabulated_vessel_values; |
| 119 |
|
| 120 |
|
| 121 |
(* |
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* vesselPlot.a4c |
| 123 |
* by Arthur W. Westerberg |
| 124 |
* Part of the ASCEND Library |
| 125 |
* $Date: 1998/06/17 19:35:06 $ |
| 126 |
* $Revision: 1.2 $ |
| 127 |
* $Author: mthomas $ |
| 128 |
* $Source: /afs/cs.cmu.edu/project/ascend/Repository/models/vesselPlot.a4c,v $ |
| 129 |
* |
| 130 |
* This file is part of the ASCEND Modeling Library. |
| 131 |
* |
| 132 |
* Copyright (C) 1998 Carnegie Mellon University |
| 133 |
* |
| 134 |
* The ASCEND Modeling Library is free software; you can redistribute |
| 135 |
* it and/or modify it under the terms of the GNU General Public |
| 136 |
* License as published by the Free Software Foundation; either |
| 137 |
* version 2 of the License, or (at your option) any later version. |
| 138 |
* |
| 139 |
* The ASCEND Modeling Library is distributed in hope that it |
| 140 |
* will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 141 |
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 142 |
* See the GNU General Public License for more details. |
| 143 |
* |
| 144 |
* You should have received a copy of the GNU General Public License |
| 145 |
* along with the program; if not, write to the Free Software |
| 146 |
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139 USA. Check |
| 147 |
* the file named COPYING. |
| 148 |
* |
| 149 |
*) |
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