1 | #*--------------------------------------------------------------------- |
---|

2 | * This file is property of the author and cannot be used, copyed |
---|

3 | * or modified without permission. |
---|

4 | * |
---|

5 | * Copyright (C) 2002-2004 the author |
---|

6 | *---------------------------------------------------------------------- |
---|

7 | * Author: Rafael de Pelegrini Soares |
---|

8 | * $Id: ThreeTank3.mso 843 2009-09-03 18:36:47Z bicca $ |
---|

9 | *---------------------------------------------------------------------- |
---|

10 | * |
---|

11 | * Arquivo de exemplo do EMSO |
---|

12 | * |
---|

13 | *-------------------------------------------------------------------*# |
---|

14 | |
---|

15 | Model tank_simplified |
---|

16 | |
---|

17 | PARAMETERS |
---|

18 | pi as Real (Brief="pi number",Default=3.141592); |
---|

19 | k as Real (Brief="Valve Constant", Unit = 'm^2.5/h', Default=4); |
---|

20 | Dh as Real (Brief="Hydraulic diameter", Unit = 'm', Default=2); |
---|

21 | A as Real (Brief="Tank area", Unit = 'm^2'); |
---|

22 | |
---|

23 | SET |
---|

24 | pi = 3.141592; |
---|

25 | A = (pi*Dh^2)/4; |
---|

26 | |
---|

27 | VARIABLES |
---|

28 | V as Real (Brief="Tank Volume", Lower = 0, Unit='m^3'); |
---|

29 | Level as Real (Brief="Tank level", Lower = 0, Unit='m'); |
---|

30 | in Fin as Real (Brief="Input flow", Lower = 0, Unit='m^3/h'); |
---|

31 | out Fout as Real (Brief="Output flow",Lower = 0, Unit='m^3/h'); |
---|

32 | |
---|

33 | EQUATIONS |
---|

34 | |
---|

35 | "Mass balance" |
---|

36 | diff(V) = Fin - Fout; |
---|

37 | |
---|

38 | "Valve equation" |
---|

39 | Fout = k*sqrt(Level); |
---|

40 | |
---|

41 | "Tank volume" |
---|

42 | V = A*Level; |
---|

43 | end |
---|

44 | |
---|

45 | |
---|

46 | FlowSheet ThreeTank |
---|

47 | |
---|

48 | DEVICES |
---|

49 | Feed as Real (Brief="Feed Stream", Unit='m^3/h'); |
---|

50 | |
---|

51 | Tank1 as tank_simplified (Brief="First Tank"); |
---|

52 | Tank2 as tank_simplified (Brief="Second Tank"); |
---|

53 | Tank3 as tank_simplified (Brief="Third Tank"); |
---|

54 | |
---|

55 | CONNECTIONS |
---|

56 | Feed to Tank1.Fin; |
---|

57 | Tank1.Fout to Tank2.Fin; |
---|

58 | Tank2.Fout to Tank3.Fin; |
---|

59 | |
---|

60 | SPECIFY |
---|

61 | Feed = 10 * 'm^3/h'; |
---|

62 | |
---|

63 | INITIAL |
---|

64 | Tank1.Level = 1 * 'm'; |
---|

65 | Tank2.Level = 2 * 'm'; |
---|

66 | Tank3.Level = 1 * 'm'; |
---|

67 | |
---|

68 | SET |
---|

69 | Tank2.k = 8 * 'm^2.5/h'; |
---|

70 | Tank2.Dh = 4 * 'm'; |
---|

71 | |
---|

72 | OPTIONS |
---|

73 | TimeStep = 0.1; |
---|

74 | TimeEnd = 10; |
---|

75 | TimeUnit = 'h'; |
---|

76 | |
---|

77 | end |
---|