Parent Directory | Revision Log

Revision **730** -
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*Tue Jul 4 07:29:50 2006 UTC*
(14 years ago)
by *johnpye*

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Removed duplicate README files, just left README.txt (the one that Windows users can easily open).

1 | $Revision: 1.5 $ |

2 | |

3 | Topics- |

4 | |

5 | 1) content description |

6 | 2) file extensions |

7 | 3) file names |

8 | 4) subdirectories |

9 | 5) File summaries |

10 | |

11 | |

12 | 1) Description: |

13 | |

14 | This directory tree contains the ASCEND IV code for library models and |

15 | example models. |

16 | |

17 | All the files in this directory hierarchy are Copyright |

18 | Carnegie Mellon University and distributed under the GNU |

19 | License version 2 unless OTHERWISE noted in an individual |

20 | file. |

21 | |

22 | All 'supported' models are in this top level directory. |

23 | Subdirectories are supported by their authors (if at all) and |

24 | not by the ASCEND Project at large. |

25 | |

26 | |

27 | 2) Files have 5 extensions: |

28 | |

29 | .a4s: A Script (tcl) for loading in the ASCEND script window. |

30 | .a4l: A library of reusable models. Each library contains enough |

31 | test models to be self-validating and self-documenting. |

32 | .a4c: Model code examples and demos. |

33 | .a4v: A file of saved values from a simulation. |

34 | .tcl: Auxillary TCL scripts for performing miscellaneous tasks |

35 | related to modeling that the user may wish to copy and |

36 | modify: for example, the user can create many permutations |

37 | on the set_intervals.tcl functions which specify a |

38 | time sampling schedule for the integrators. |

39 | |

40 | and 1 prefix |

41 | |

42 | z- normally of no interest to users, z files are models that |

43 | contain code testing 1 or more features of the system which |

44 | are not ordinarily tested in the course of routine distillation |

45 | modeling. |

46 | |

47 | |

48 | 3) A note on file names: |

49 | |

50 | We frequently develop alternative modeling strategies as part of |

51 | research. Since all our models live in one directory, several files |

52 | may have names starting with part of the author's name to distinguish |

53 | them from similar sets of models by another author. |

54 | Groups of related models may be kept in subdirectories. |

55 | |

56 | |

57 | 4) Subdirectories: |

58 | |

59 | Most subdirectories only exist at Carnegie Mellon, and are generally |

60 | full of experimental goop designed to frustrate the casual user. |

61 | They also contain legacy goop. Old style extensions in use for |

62 | these files include .s (now .a4s), .lib (now .a4l), .asc (now .a4c). |

63 | .values (now .a4v), .units (now defunct). |

64 | |

65 | ben: This directory contains the models presented in Ben Allan's |

66 | thesis. These models are somewhat less flexible than the |

67 | main models directory, but are generally less consuming of |

68 | computer CPU tim/memory resources. |

69 | |

70 | libraries: This directory contains *.lib files, containing model |

71 | libraries. There is a link between H_G_thermodynamics.lib |

72 | and thermo.lib. |

73 | |

74 | examples: This directory contains example files. Each example has a |

75 | *.asc and a *.s file. The *.s is a script for running the |

76 | models in the *.asc file. |

77 | |

78 | pending: This directory contains possible additions or changes to the |

79 | libraries and examples directories. The models in these |

80 | directories fall under the GNU license, but there are no |

81 | guarantees on how well they will work. A generic GNU |

82 | header is provided in each of the sub-directories to be |

83 | added to any models placed in pendings. |

84 | |

85 | westerberg This directory contains models that Art Westerberg is |

86 | developing. |

87 | |

88 | Of interest are the simpleUnits.AWW.a4s/c script and |

89 | models. These models allow one to develop simple |

90 | flowsheet models for stream mixing, splitting, pressure |

91 | changing (compressor, valve) while using rigorous physical |

92 | properties. The H2Process models use these models to |

93 | model a desktop hydrogen plant. |

94 | |

95 | The models in SiirolaJohn are also for modeling a desktop |

96 | hydrogen plant. |

97 | |

98 | The CelayaDemo models mimic the simple_FS models replaced |

99 | with rigorous units and physical property calculations. |

100 | |

101 | The ivp models are for solving initial value DAE models. |

102 | See the ASCEND Wiki description for this work at |

103 | |

104 | https://pse.cheme.cmu.edu/wiki/view/Ascend/InitialValueModeling |

105 | |

106 | |

107 | 5) Models are primarily chemical engineering library application |

108 | except as OTHERWISE noted. |

109 | |

110 | guthriecosts.a4l |

111 | Cost correlation modeling, chemical engineering. |

112 | KenPendings.a4l |

113 | Experimental code. |

114 | abc_flowsheet.a4l |

115 | Experimental code. |

116 | atoms.a4l |

117 | Basic variable definitions for all engineering and physics. |

118 | Additional ATOM contributions welcomed. |

119 | basemodel.a4l |

120 | Base system library. |

121 | bvp.a4l |

122 | Generic mathematical boundary value problem framework for |

123 | differential algebraic equations. |

124 | casestudy.a4s |

125 | Simple example of case studies for chemical engineering flash MODEL. |

126 | collocation.a4l |

127 | Reduced order distillation modeling by collocation. |

128 | Variable number of trays and tray sections supported. |

129 | collocation.a4s |

130 | Demo script for collocation.a4l. |

131 | collocation_tests.a4s |

132 | Obsolete file. |

133 | column.a4l |

134 | Rigorous tray-by-tray distillation models for chemical engineering. |

135 | Fixed number of trays user configurable. Mass or energy balance |

136 | options. |

137 | components.a4l |

138 | Physical properties database from Reid Prausnitz and Poling |

139 | (McGraw-Hill) for chemical engineering. Will be expanded greatly |

140 | shortly with permission from McGraw-Hill. |

141 | cost_column.a4l |

142 | Economic evaluation of collocation modeled distillation. |

143 | distance_calc.a4c |

144 | Simple physics example. |

145 | dyn_column.a4l |

146 | Dynamic simulation of vapor-liquid distillation in |

147 | chemical engineering. Mass or energy balance options. |

148 | dyn_flash.a4l |

149 | Dynamic simulation of vapor-liquid flash, condensers, reboilers etc |

150 | for chemical engineering. |

151 | dyn_separation_demos.a4s |

152 | Demo script for dynamic simulation of flash and distillation models. |

153 | dyn_tank.a4c |

154 | dyn_tank.a4s |

155 | Dynamic simulation of water level in a tank. |

156 | flash.a4l |

157 | Steady-state flash separation models for chemical engineering. |

158 | Condenser, reboiler, tray, etc. Mass or energy balance options. |

159 | force1d.a4c |

160 | force1d.a4s |

161 | Mass-spring-force models for basic physics or mechanical engineering. |

162 | heatex.a4c |

163 | heatex.a4s |

164 | Heat exchange MODEL with condensation boundary determination. |

165 | ivpsystem.a4l |

166 | Basic variable definitions for algebraic and initial value problem |

167 | solvers. |

168 | kinetics.a4l |

169 | kinetics.a4s |

170 | Models for computing chemical reactions. |

171 | linear_balance.a4c |

172 | linear_balance.a4s |

173 | Trivial mass-balance flowsheet superstructures for chemical |

174 | engineering solved with conditional modeling. Requires CONOPT |

175 | measures.a4l |

176 | Units of measure definitions based on MKS system. |

177 | mix.a4l |

178 | mix.a4s |

179 | Mixer unit for process streams in chemical engineering. |

180 | old_separation_demos.a4s |

181 | Steady-state flash and distillation models from Ben Allan's thesis. |

182 | phaseq.a4c |

183 | phaseq.a4s |

184 | phaseq_comp.a4c |

185 | phaseq_comp.a4s |

186 | phases.a4l |

187 | pipeline.a4c |

188 | pipeline.a4s |

189 | Conditional models of multiphase thermodynamic equilibrium |

190 | and pipe networks. |

191 | plot.a4l |

192 | Antiquated but sometimes useful plot package. |

193 | plotbvp.a4c |

194 | plotbvp.a4s |

195 | Plot package application example for differential equations. |

196 | plotcol.a4c |

197 | Plot package application example for distillation. |

198 | rachford.a4c |

199 | rachford.a4s |

200 | Simple Rachford-Rice flash calculation. |

201 | ratelaws.a4c |

202 | Chemical kinetics examples. |

203 | reactor.a4l |

204 | reactor.a4s |

205 | Chemical reactor modeling examples, chemical engineering. |

206 | roots_of_poly.a4c |

207 | Simple equation solving example. Mathematics. |

208 | separation_demos.a4s |

209 | Steady-state flash and distillation models. |

210 | set_intervals.tcl |

211 | Support script for initial value solver interface. |

212 | simple_fs.a4c |

213 | simple_fs.a4s |

214 | Obsolete flowsheet structuring examples a la ASCEND III. |

215 | simple_fs_cost.a4c |

216 | simple_fs_cost.a4s |

217 | simple_fs_ext.a4c |

218 | Obsolete flowsheet optimization examples a la ASCEND III. |

219 | Requires CONOPT. |

220 | sonic.a4c |

221 | sonic.a4s |

222 | Calculation of sonic flow transition in a pipe. Chemical/mechanical |

223 | engineering. |

224 | splitter.a4l |

225 | splitter.a4s |

226 | Process stream splitter models for chemical engineering. |

227 | stream_holdup.a4l |

228 | Basic process stream definitions. |

229 | system.a4l |

230 | Basic variable definition for algebraic solvers. |

231 | ternary_plot.a4l |

232 | Plot library for 3 component mixtures in distillation columns from |

233 | chemical engineering. |

234 | thermodynamics.a4l |

235 | Vapor, liquid, and equilibrium thermodynamic calculation library. |

236 | vessel.a4c |

237 | vessel.a4s |

238 | vesselMethods.a4c |

239 | vesselNotes.a4c |

240 | vesselParams.a4c |

241 | vesselPlain.a4c |

242 | vesselPlot.a4c |

243 | vesselPlot.a4s |

244 | vesselStudy.a4s |

245 | vesselTabulated.a4c |

246 | vesselTabulated.a4s |

247 | Simple models accumulated from the HowTo's for ASCEND. |

248 | when_demo.a4c |

249 | when_demo.a4s |

250 | Simple example of conditional modeling. |

251 | z-addmethod.a4c |

252 | z-align.a4c |

253 | z-alike.a4c |

254 | z-anontype.a4c |

255 | z-arsubs.a4c |

256 | z-context.a4c |

257 | z-emptyarg.a4c |

258 | z-emptyfor.a4c |

259 | z-iflogic.a4c |

260 | z-indirect.a4c |

261 | z-isawhere.a4c |

262 | z-relname.a4c |

263 | z-suite.a4s |

264 | Software Quality Assurance tests and bug documentation. |

265 | Not for routine use. |

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