To double the nozzle flow rate without changing the nozzle, what should you do?

To double the nozzle flow rate without changing the nozzle, you need to apply the concept of how pressure impacts flow rate. The relationship between pressure and flow rate through a nozzle follows the principle of hydraulics, specifically that flow rate is proportional to the square root of the pressure difference.

When pressure is increased, the flow rate will increase, but it does so in a non-linear fashion. To achieve a doubling of the flow rate, the pressure doesn't just need to be increased by a factor of two; instead, it must be increased by the square of the desired factor for flow rate.

If you want to double the flow rate, you must increase the pressure by a factor of four. This is derived from the flow rate equation: flow rate is proportional to the square root of pressure. Mathematically, if flow rate increases by a factor of two, then the pressure must increase by the square of that factor (2² = 4).

Therefore, increasing the pressure four times allows for the nozzle to deliver double the flow rate without needing to change the nozzle itself.