Portable cavitation peening method and apparatus

A portable fluid supply apparatus, comprising:

• a base configured for transport,
• a fluid reservoir supported by the base,
• a temperature control device for maintaining a desired temperature of fluid contained in the reservoir,
• a first pump device configured to receive fluid from the reservoir and to pump the fluid into a first flexible conduit at a first fluid pressure, and a second pump device configured to receive fluid from the reservoir and pump the fluid into a second flexible conduit at a second fluid pressure, the first fluid pressure being higher than the second fluid pressure such that a cavitation bubble cloud will be generated through a co-flow nozzle assembly connected to distal ends of the first and second flexible conduits, and
• a controller programmed to maintain desired temperature and pressure of fluid carried by the flexible conduits.