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Given pressure data from 10 successive blowdown tests on the same cylinder head:
1. Convert pressure data vs time to mass flow rate using ideal gas equations
2. Plot mass flow rate vs pressure for blowdown event
3. Compare experimental mass flow rate to theoretical mass flow rate using choked flow equation
for mass flow rate. Plot both on the same graph of Mass flow rate vs Pressure.
4. Discuss your findings in 1 paragraph
Assume nitrogen is working fluid
Assume k＝1.4
R＝0.297 kJ/kg K
R＝54.99 (ft lbf/(lbm °R))
Assume flow area from cylinder to exhaust is 0.39722 square inches.
In the data given, units of the first column are seconds and units of the second column are in psi (gage).
Please use all SI units for your calculations or all imperial units. If you use SI units you need to convert
your psi to Pa and flow area to square meters.
Volume in cylinder＝0.089466 CUBIC FT
T＝539.2°R @ 117 PSIG
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