Let the uniform region behind the reflected expansion wave be denoted by the number 6. For the shock tube in Probs. 7.10 and 7.11, calculate the pressure ratio \(p_{6} / p_{3}\) and the temperature \(T_{6}\) behind the reflected expansion wave.

Data From Problem 7.11:

For the shock tube in Prob. 7.10, the lengths of the driver and driven sections are 3 and \(9 \mathrm{~m}\), respectively. On graph paper, plot the wave diagram ( \(x t\) diagram) showing the wave motion in the shock tube, including the incident and reflected shock waves, the contact surface, and the incident and reflected expansion waves. To construct the non-simple region of the reflected expansion wave. Use at least four characteristic lines to define the incident expansion wave, as shown in Fig. 7.16.

Figure 7.16:

Data From Problem 7.10:

The driver and driven gases of a pressure-driven shock tube are both air at \(300 \mathrm{~K}\). If the diaphragm pressure ratio is \(p_{4} / p_{1}=5\), 

Transcribed Image Text:

Nonsimple region End wall 10 Simple region Simple region Incident wave + Reflected wave