# Design of a New Supersonic Shock Wave Generator and Application in Power Generation
## 5 Conclusions  
In this paper, we propose the design of a new supersonic shock wave generator as a solution to the problems in traditional shock wave generators. The new shock wave generator mainly comprises a high-pressure storage tank and a balanced valve stem. When the balanced valve stem is moved backward, a gas outlet is created on the high-pressure storage tank to allow a large amount of high-pressure gases to rush out rapidly to generate a shock wave. Then, the balanced valve stem is moved forward to close the gas outlet, and the high-pressure gases are inputted into the high-pressure storage tank once again. Therefore, the balanced valve stem can move backward again, generating another shock wave. In this study, we carried out a CFD numerical simulation of shock wave monitoring. We also developed a shock wave generator with a 2 L gas storage tank volume and a shock wave monitoring system with a 1 M shock tube length to monitor the velocity and pressure of the shock waves generated. The shock wave monitoring experiments carried out by the system show that the new shock wave generator has the following characteristics: (1) saving workforce and material resources; (2) high security; (3) high operation efficiency; (4) repeatable operation; (5) generating supersonic shock waves of Mach 3 to 4; (6) generating high-pressure shock waves of more than 900 kg/cm\({}^{2}\) (2 L gas storage tank); and (7) the larger the volume of the gas storage tank, the higher the shock wave pressure generated.  
Moreover, this research further utilizes the new shock wave generator to develop a shock wave-driven power generation system. This system can repeatedly generate shock waves to drive a Tesla turbine, which rotates a magnetic energy generator to generate electricity. We set the control parameters \(S_{min}\) to 1200 and 1500 rpm to conduct shock wave-driven power generation experiments at different rotation speeds. In these experiments, we turned on different numbers of parallel bulb loads and automatically monitored and plotted seven data curves, concerning storage tank pressure \(p_{t}\), output pressure \(p_{o}\), rotation speed \(s_{r}\), gas flow rate \(f_{g}\), voltage \(V_{p}\), current \(I_{p}\), and power \(E_{p}\). Through observing and calculating these data curves, we can carry out the performance analysis of the power generation experiments. The analysis results show the following: 1. The output voltage, \(V_{p}\), is proportional to the rotation speed, \(s_{r}\), so controlling \(s_{r}\) can determine \(V_{p}\). When there is no load, the average value of \(s_{r}\) increases from 1262.52 rpm to 1546.24 rpm, and the average value of \(V_{p}\) can increase from 28.38 V to 40.46 V. 2. The more light bulbs turned on, the greater the \(I_{p}\) and \(E_{p}\) generated. The ratio of \(I_{p}\) and \(E_{p}\) generated by turning on one, two, or three light bulbs is approximately 1:2:3. 3. The more light bulbs turned on, the greater the required gas flow \(f_{g}\), and the higher the frequency \(f_{s}\) of the shock wave. 4. When the user turns on three bulbs, \(S_{min}\) increases from 1200 rpm to 1500 rpm, and the average value of \(E_{p}\) increases from 3501.15 mW to 7731.45 mW.  
This study can verify the feasibility of using supersonic shock waves as a source of aerodynamic force for a power generation system. It will facilitate the research and application of small but high-power aerodynamic power generation systems. In the future, we will further engage in research on the following applications based on the results of this study: 1. using high-pressure shock waves to remove pipeline obstructions; 2. using high-pressure shock waves to break rock formations at the bottom of geothermal wells and increase their productivity; 3. the development of lightweight high-pressure shock waves rock-breaking devices; and 4. high-pressure shock waves emitted radially from the plant roots below the soil surface to increase the aeration of the soil root zone and reduce soil carbon emissions (without damaging the soil surface).