3 ms·
Put the air inlet/outlet at the top of the cavern, and the water inlet/outlet at the bottom. Then just stop pumping air while the water level in the cavern is s
by Slartie 2y ago
Put the air inlet/outlet at the top of the cavern, and the water inlet/outlet at the bottom. Then just stop pumping air while the water level in the cavern is still above the water outlet. A little water has to remain in the cavern at all times.