Is a dynamic pump defined as a liquid pump that physically traps and tries to reduce the volume of the liquid?

A dynamic pump is characterized by its method of converting kinetic energy into hydraulic energy, allowing for the continuous flow of liquid without physically trapping or compressing it. Unlike positive displacement pumps, which do rely on trapping a certain volume of liquid and mechanically forcing it through the system, dynamic pumps operate on the principle of imparting velocity to the fluid, typically using impellers. This design enables dynamic pumps to maintain a steady flow rate regardless of changes in pressure, as they rely on momentum rather than volume displacement.

The clarification about the definition of dynamic pumps highlights that they do not attempt to reduce the volume of liquid they handle; rather, they maintain flow while allowing the liquid to move freely through the pump system. Therefore, stating that a dynamic pump is one that physically traps and tries to reduce the volume of the liquid is incorrect.