[898] | 1 | #*------------------------------------------------------------------- |
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| 2 | * EMSO Model Library (EML) Copyright (C) 2004 - 2007 ALSOC. |
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| 3 | * |
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| 4 | * This LIBRARY is free software; you can distribute it and/or modify |
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| 5 | * it under the therms of the ALSOC FREE LICENSE as available at |
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| 6 | * http://www.enq.ufrgs.br/alsoc. |
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| 7 | * |
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| 8 | * EMSO Copyright (C) 2004 - 2007 ALSOC, original code |
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| 9 | * from http://www.rps.eng.br Copyright (C) 2002-2004. |
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| 10 | * All rights reserved. |
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| 11 | * |
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| 12 | * EMSO is distributed under the therms of the ALSOC LICENSE as |
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| 13 | * available at http://www.enq.ufrgs.br/alsoc. |
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| 14 | * |
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| 15 | *--------------------------------------------------------------------- |
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| 16 | * Plant of n-Tanks |
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| 17 | *---------------------------------------------------------------------- |
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| 18 | * |
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| 19 | * Description: |
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| 20 | * Plant of n-tanks |
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| 21 | * |
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| 22 | * Devices: |
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| 23 | * * inlet and outlet feeds |
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| 24 | * * mixer |
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| 25 | * * splitter |
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| 26 | * * tank |
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| 27 | * |
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| 28 | *---------------------------------------------------------------------- |
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| 29 | * Author: Rodolfo Rodrigues |
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| 30 | *--------------------------------------------------------------------*# |
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| 31 | |
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| 32 | using "types"; |
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| 33 | |
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| 34 | |
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| 35 | Model vol_tank |
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| 36 | ATTRIBUTES |
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| 37 | Pallete = false; |
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| 38 | Brief = "Routine to calculate tank volume"; |
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| 39 | Info = " |
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| 40 | Based in 2 geometry and 2 configurations/orientations |
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| 41 | |
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| 42 | == Geometry == |
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| 43 | * Flat (no head) (default) |
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| 44 | * Spherical |
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| 45 | |
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| 46 | == Orientation == |
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| 47 | * Vertical (default) |
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| 48 | * Horizontal |
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| 49 | "; |
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| 50 | |
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| 51 | PARAMETERS |
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| 52 | pi as positive (Brief="Pi value", Default=3.141593, Symbol="\pi"); |
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| 53 | Geometry as Switcher (Brief="Tank head type", Valid=["flat","spherical"], Default="flat"); |
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| 54 | Orientation as Switcher(Brief="Tank orientation", Valid=["vertical","horizontal"], Default="vertical"); |
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| 55 | |
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| 56 | VARIABLES |
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| 57 | V as volume (Brief="Level tank volume"); |
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| 58 | Vt as volume (Brief="Tank volume"); |
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| 59 | L as length (Brief="Tank length"); |
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| 60 | Level as length (Brief="Tank level"); |
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| 61 | D as length (Brief="Tank diameter"); |
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| 62 | Across as area (Brief="Tank cross section area"); |
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| 63 | |
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| 64 | EQUATIONS |
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| 65 | "Content volume" |
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| 66 | V = Across*Level; |
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| 67 | |
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| 68 | switch Orientation |
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| 69 | case "vertical": |
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| 70 | switch Geometry |
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| 71 | case "flat": |
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| 72 | "Tank volume" |
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| 73 | Vt = pi/4*(D^2)*L; |
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| 74 | "Level tank volume" |
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| 75 | V = pi/4*(D^2)*Level; |
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| 76 | |
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| 77 | case "spherical": |
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| 78 | "Tank volume" |
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| 79 | Vt = pi/6*D^3; |
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| 80 | "Level tank volume" |
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| 81 | V = pi/3*Level^2*(3*D/2 - Level); |
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| 82 | end |
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| 83 | case "horizontal": |
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| 84 | switch Geometry |
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| 85 | case "flat": |
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| 86 | "Tank volume" |
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| 87 | Vt = pi/4*(D^2)*L; |
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| 88 | "Level tank volume" |
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| 89 | V = ((D^2)*acos((D - 2*Level)/D)/4/'rad' - |
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| 90 | (D - 2*Level)*sqrt(D*Level - Level^2)/2)*L; |
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| 91 | |
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| 92 | case "spherical": |
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| 93 | "Tank volume" |
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| 94 | Vt = pi/6*D^3; |
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| 95 | "Level tank volume" |
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| 96 | V = pi/3*Level^2*(3*D/2 - Level); |
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| 97 | end |
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| 98 | end |
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| 99 | end |
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| 100 | |
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| 101 | |
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| 102 | #*--------------------------------------------------------------------- |
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| 103 | * Simple feed model |
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| 104 | *--------------------------------------------------------------------*# |
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| 105 | Model stream |
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| 106 | ATTRIBUTES |
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| 107 | Brief = "Simple stream model"; |
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| 108 | |
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| 109 | VARIABLES |
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| 110 | F as flow_vol (Brief="Volumetric flow", DisplayUnit='cm^3/s'); |
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| 111 | end |
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| 112 | |
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| 113 | Model feed_inlet |
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| 114 | ATTRIBUTES |
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| 115 | Pallete = true; |
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| 116 | Brief = "Simple inlet stream"; |
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| 117 | Icon = "icon/inlet"; |
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| 118 | |
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| 119 | VARIABLES |
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| 120 | out Outlet as stream (Brief="Outlet stream", PosX=0.5, PosY=0, Symbol="_{out}"); |
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| 121 | end |
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| 122 | |
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| 123 | Model feed_outlet |
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| 124 | ATTRIBUTES |
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| 125 | Pallete = true; |
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| 126 | Brief = "Simple outlet stream"; |
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| 127 | Icon = "icon/outlet"; |
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| 128 | |
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| 129 | VARIABLES |
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| 130 | in Inlet as stream (Brief="Inlet stream", PosX=0.5, PosY=0, Symbol="_{in}"); |
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| 131 | end |
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| 132 | |
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| 133 | |
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| 134 | #*--------------------------------------------------------------------- |
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| 135 | * Simple splitter model |
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| 136 | *--------------------------------------------------------------------*# |
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| 137 | Model simple_splitter |
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| 138 | ATTRIBUTES |
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| 139 | Pallete = true; |
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| 140 | Icon = "icon/connection"; |
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| 141 | Brief = "Simple model of a splitter with 2 outlet streams."; |
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| 142 | |
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| 143 | VARIABLES |
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| 144 | in Inlet as stream (Brief="Inlet stream", PosX=0.5, PosY=1, Symbol="_{in}"); |
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| 145 | out Outlet1 as stream (Brief="Outlet stream 1", PosX=1, PosY=0.5, Symbol="_{out,1}"); |
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| 146 | out Outlet2 as stream (Brief="Outlet stream 2", PosX=0.5, PosY=0, Symbol="_{out,2}"); |
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| 147 | X as fraction (Brief="Fraction to Outlet 1"); |
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| 148 | |
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| 149 | EQUATIONS |
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| 150 | "Material balance" |
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| 151 | Outlet1.F + Outlet2.F = Inlet.F; |
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| 152 | |
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| 153 | "Outlet stream 1" |
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| 154 | Outlet1.F = Inlet.F*X; |
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| 155 | end |
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| 156 | |
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| 157 | |
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| 158 | #*--------------------------------------------------------------------- |
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| 159 | * Simple mixer model |
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| 160 | *--------------------------------------------------------------------*# |
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| 161 | Model simple_mixer |
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| 162 | ATTRIBUTES |
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| 163 | Pallete = true; |
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| 164 | Icon = "icon/connection"; |
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| 165 | Brief = "Simple model of a mixer with 2 inlet streams."; |
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| 166 | |
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| 167 | VARIABLES |
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| 168 | in Inlet1 as stream (Brief="Inlet stream 1", PosX=0, PosY=0.5, Symbol="_{in,1}"); |
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| 169 | in Inlet2 as stream (Brief="Inlet stream 2", PosX=0.5, PosY=0, Symbol="_{in,2}"); |
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| 170 | out Outlet as stream (Brief="Outlet stream", PosX=0.5, PosY=1, Symbol="_{out}"); |
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| 171 | |
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| 172 | EQUATIONS |
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| 173 | "Material balance" |
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| 174 | Outlet.F = Inlet1.F + Inlet1.F; |
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| 175 | end |
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| 176 | |
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| 177 | |
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| 178 | #*--------------------------------------------------------------------- |
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| 179 | * Simple tank model |
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| 180 | *--------------------------------------------------------------------*# |
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| 181 | Model simple_tank |
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| 182 | ATTRIBUTES |
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| 183 | Pallete = true; |
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| 184 | Icon = "icon/tank"; |
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| 185 | Brief = "Simple model of a tank."; |
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| 186 | |
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| 187 | PARAMETERS |
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| 188 | g as acceleration(Brief="Acceleration of gravity", Default=9.80665); |
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| 189 | |
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| 190 | VARIABLES |
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| 191 | in Inlet as stream (Brief="Inlet stream", PosX=0.5, PosY=0, Symbol="_{in}"); |
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| 192 | out Outlet as stream (Brief="Outlet stream", PosX=0.5, PosY=1, Symbol="_{out}"); |
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| 193 | |
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| 194 | tank as vol_tank (Brief="Tank volume routine calculation", Symbol="_{tank}"); |
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| 195 | K as Real (Brief="Discharge constant", Unit='cm^2.5/s'); |
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| 196 | a as area (Brief="Cross-section of outlet hole", DisplayUnit='cm^2'); |
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| 197 | |
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| 198 | EQUATIONS |
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| 199 | "Material balance" |
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| 200 | diff(tank.V) = Inlet.F - Outlet.F; |
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| 201 | |
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| 202 | "Outlet flow" |
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| 203 | Outlet.F = K*sqrt(tank.Level); |
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| 204 | |
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| 205 | "Discharge constant" |
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| 206 | K = a*sqrt(2*g); |
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| 207 | end |
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