???? Transport Processes and unit operation - PowerPoint PPT Presentation

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???? Transport Processes and unit operation

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Title: 1 Author: Lim_notebook Last modified by: Lim_notebook Created Date: 2/1/2005 5:53:36 AM Document presentation format: – PowerPoint PPT presentation

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Title: ???? Transport Processes and unit operation


1
????Transport Processes and unit operation
  • ? 2 ?
  • ??? ??? ??

2
? 2 ? ?????? ??
  • 2.1 ??
  • 2.2 ?????
  • 2.3 ??? ??
  • 2.4 ??? ??
  • 2.5 ??? ?? (??? ??)
  • 2.7 ??? ???? ?????

3
2.1 ??? ?? ??
  • ???? ?? (incompressible fluid) ??
  • ??? ?? (compressible fluid) ??
  • ???? (fluid mechanics) ?????? ?? ??
  • ?? ??? (fluid statics)
  • ?? ??? (fluid dynamics)

?? 36 ?
4
2.2 fluid statics
  • ? (force) F ma (?? ? ???) N, kgm/s2
  • 10? 100kg/? ?? ?????? ????
  • ?? (pressure) P F/A (??/???) Pa
  • ?? 2.2-2 ???? ??? ????

?? 37-39 ?
5
2.2 fluid statics head?
?? 40-41 ?
6
?? 2.2-4 ????? ??? ????
PA
PB
?? 43 ?
7
2.3 ??? ??
Newtons law ????? flux ? ??? ?? ???? ????.
?? 49 ?
8
Ch. 2 ??? ??
Newtons law ????? flux ? ??? ?? ???? ????.
49? ????
9
2.4 ??? ?? (?) ??? ??
  • ??? ??? ?? ???? ????, ? ????? ??(?) ??.
  • ??(?) ? ??

?? 50-52 ?
10
2.4 ??? ?? (?) ??? ??
  • Newtonian fluid water
  • Non-Newtonian fluid ???, ???, ???
  • See Table 2.4-1 ?? ????

?? 53 ?
11
2.5 ????
  • ??(Laminar flow)????(viscosity flow)
  • ??(Turbulent flow)
  • ?? 2.5-1 ???? ???? ???
  • See page 100 for friction factor

?? 56 ?
12
2.7 ??? ???? ?????
?? 1 no heat supply, no shaft work, no
extraction/contraction work
?? 2 constant Temperature, constant density
13
2.7 ??? ???? ?????
????, ??????? ???
?????
?????
14
?????? ??? ????
  • z ? ?????? ?? ??, p ? ??, v ? ????, ??? A ? ??
    ?????. ???? ???? ??? ??? ?, ?????? ??? ? ??.
  • ??, ? ???? ???? ??? ??, ?? ?1000kg/m3, ???
    A15?10-3 m2, A22?10-3 m2, ?? v11.7m/s, ??? ??
    P170kPa ??.
  • ??????? ?? ???? ?????? ???, ?????? ?? v2 ? ????.
  • 2. ?????? ???? ?? P2 ? ????.

15
?? 6. ????? (ch. 2)
  • 2.2-1
  • 2.2-4
  • 2.5-2
  • 2.7-8 (?? 2.7-5 ??, ????? ??)
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