| 1 | #*--------------------------------------------------------------------- |
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| 2 | * This file is property of the author and cannot be used, copyed |
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| 3 | * or modified without permission. |
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| 4 | * |
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| 5 | * Copyright (C) 2002-2004 the author |
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| 6 | *---------------------------------------------------------------------- |
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| 7 | * Author: Rafael de Pelegrini Soares |
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| 8 | * $Id: ThreeTank3.mso 843 2009-09-03 18:36:47Z bicca $ |
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| 9 | *---------------------------------------------------------------------- |
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| 10 | * |
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| 11 | * Arquivo de exemplo do EMSO |
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| 12 | * |
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| 13 | *-------------------------------------------------------------------*# |
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| 14 | |
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| 15 | Model tank_simplified |
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| 16 | |
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| 17 | PARAMETERS |
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| 18 | pi as Real (Brief="pi number",Default=3.141592); |
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| 19 | k as Real (Brief="Valve Constant", Unit = 'm^2.5/h', Default=4); |
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| 20 | Dh as Real (Brief="Hydraulic diameter", Unit = 'm', Default=2); |
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| 21 | A as Real (Brief="Tank area", Unit = 'm^2'); |
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| 22 | |
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| 23 | SET |
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| 24 | pi = 3.141592; |
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| 25 | A = (pi*Dh^2)/4; |
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| 26 | |
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| 27 | VARIABLES |
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| 28 | V as Real (Brief="Tank Volume", Lower = 0, Unit='m^3'); |
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| 29 | Level as Real (Brief="Tank level", Lower = 0, Unit='m'); |
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| 30 | in Fin as Real (Brief="Input flow", Lower = 0, Unit='m^3/h'); |
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| 31 | out Fout as Real (Brief="Output flow",Lower = 0, Unit='m^3/h'); |
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| 32 | |
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| 33 | EQUATIONS |
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| 34 | |
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| 35 | "Mass balance" |
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| 36 | diff(V) = Fin - Fout; |
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| 37 | |
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| 38 | "Valve equation" |
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| 39 | Fout = k*sqrt(Level); |
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| 40 | |
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| 41 | "Tank volume" |
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| 42 | V = A*Level; |
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| 43 | end |
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| 44 | |
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| 45 | |
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| 46 | FlowSheet ThreeTank |
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| 47 | |
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| 48 | DEVICES |
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| 49 | Feed as Real (Brief="Feed Stream", Unit='m^3/h'); |
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| 50 | |
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| 51 | Tank1 as tank_simplified (Brief="First Tank"); |
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| 52 | Tank2 as tank_simplified (Brief="Second Tank"); |
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| 53 | Tank3 as tank_simplified (Brief="Third Tank"); |
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| 54 | |
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| 55 | CONNECTIONS |
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| 56 | Feed to Tank1.Fin; |
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| 57 | Tank1.Fout to Tank2.Fin; |
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| 58 | Tank2.Fout to Tank3.Fin; |
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| 59 | |
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| 60 | SPECIFY |
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| 61 | Feed = 10 * 'm^3/h'; |
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| 62 | |
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| 63 | INITIAL |
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| 64 | Tank1.Level = 1 * 'm'; |
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| 65 | Tank2.Level = 2 * 'm'; |
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| 66 | Tank3.Level = 1 * 'm'; |
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| 67 | |
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| 68 | SET |
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| 69 | Tank2.k = 8 * 'm^2.5/h'; |
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| 70 | Tank2.Dh = 4 * 'm'; |
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| 71 | |
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| 72 | OPTIONS |
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| 73 | TimeStep = 0.1; |
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| 74 | TimeEnd = 10; |
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| 75 | TimeUnit = 'h'; |
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| 76 | |
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| 77 | end |
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