Solved problems 1(control volume)
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Transcript of Solved problems 1(control volume)
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08/12/201008/12/2010 Dr. Munzer Ebaid Dr. Munzer Ebaid 11
SOLVED PROBLEMS
CONTROL VOLUME APPROACH
CHAPTER (5)
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08/12/201008/12/2010 Dr. Munzer Ebaid Dr. Munzer Ebaid 22
CONTROL VOLUME APPROACH
3. Continuity equation outincv mm
dtdM
&& −=
Volume Flow Rate Mass Flow Rate
1. Velocity is constant:
2. Velocity is variable:
AVQ =& AVQm ρρ == &&
∫=A
VdAQ& QVdAVdAmAA
&& ρρρ === ∫∫
5. The extensive property is defined as )(B
6. The intensive property ⎟⎠⎞
⎜⎝⎛ =
massBb
21 )()( AVAV ρρ =21 mm && =4. Continuity equation in a pipe
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08/12/201008/12/2010 Dr. Munzer Ebaid Dr. Munzer Ebaid 33
CONTROL VOLUME APPROACH
0=∂∂
+∂∂
+∂∂
zw
yv
xu10. Differential form of continuity equation
21
0
21 V
pp V
ρσ
−=9. Cavitation index
7. Reynolds transport theorem( in general) ∫∫ •+=cscv
sys dAVbdQbdtd
dtdB
ρρ
8. Reynolds transport theorem( for mass) ∫∫ •+=CSCV
sys dAVdVdtd
dtdM
ρρ
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CONTROL VOLUME APPROACH
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CONTROL VOLUME APPROACH
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Problem 5.55(p. 176)
Mixture
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Problem 5.75(p. 181)
Table (5)Throat
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CONTROL VOLUME APPROACH
THE END