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2. Water hammer - Wikipedia

   en.wikipedia.org/wiki/Water_hammer

   Effect of a pressure surge on a float gauge. Hydraulic shock (colloquial: water hammer; fluid hammer) is a pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly: a momentum change. It is usually observed in a liquid but gases can also be affected.

3. Surge control - Wikipedia

   en.wikipedia.org/wiki/Surge_control

   Surge control products have been used in many industries to protect the maximum working pressure of hydraulic system for decades. Typical applications for surge relief equipment is in pipelines at pump stations, receiving manifolds at storage facilities, back pressure control, marine loading/off loading, site specific applications where pressure surges are generated by the automation system ...

4. Water flow test - Wikipedia

   en.wikipedia.org/wiki/Water_flow_test

   First, a static pressure gauge is attached to the test hydrant and the static water pressure is measured at the test hydrant. Second, the flow hydrant opened to allow water to flow in a fully open condition. Simultaneously the pitot tube pressure is recorded from the flow hydrant while the residual pressure is measured from the test hydrant.

5. Surge in compressors - Wikipedia

   en.wikipedia.org/wiki/Surge_in_compressors

   This adverse pressure gradient naturally decelerates flows in the whole system and reduces the mass flow rate. The slope of a constant speed line near surge line is usually zero or even positive, which implies that the compressor cannot provide a much higher pressure as lowering the mass flow rate.

6. Hurricane-proof building - Wikipedia

   en.wikipedia.org/wiki/Hurricane-proof_building

   Interlocking metal pan roof systems installed on mobile homes can fail under the pressure differential (lift) created by the high-velocity winds passing over the surface plane of the roof. This is compounded by the wind entering the building allowing the building interior to pressurize, lifting the underside of the roof panels, resulting in the ...

7. Axial fan design - Wikipedia

   en.wikipedia.org/wiki/Axial_fan_design

   The pressure fluctuations are observed at low discharges and at flow rates(as indicated by the point "S" ) the pressure deceases. The pressure variations to the left of the point "S" causes for unsteady flow which are due to the two effects of Stalling and surging.