In the Net Suction Head equation Hs = hs + hv + hp - hf, which term represents the velocity head?

In the Net Suction Head equation Hs = hs + hv + hp - hf, which term represents the velocity head?

• A. hs
• B. hv
• C. hp
• D. hf

Answer: (B)

The velocity head is the part of the energy balance that comes from the fluid’s motion, quantified by V^2/(2g). In the Net Suction Head equation, each term represents a different form of energy per unit weight: static suction head (h_s) for elevation difference, velocity head (h_v) for kinetic energy due to flow speed, pressure head (h_p) for pressure energy, and friction head (h_f) for losses. The velocity head is the term that accounts for the kinetic energy carried by the moving fluid, hence it is added to the suction head. The other terms play different roles: static head relates to height, pressure head to pressure energy, and friction head subtracts losses. This is why the velocity head term, h_v, is the correct choice.

The velocity head is the part of the energy balance that comes from the fluid’s motion, quantified by V^2/(2g). In the Net Suction Head equation, each term represents a different form of energy per unit weight: static suction head (h_s) for elevation difference, velocity head (h_v) for kinetic energy due to flow speed, pressure head (h_p) for pressure energy, and friction head (h_f) for losses. The velocity head is the term that accounts for the kinetic energy carried by the moving fluid, hence it is added to the suction head. The other terms play different roles: static head relates to height, pressure head to pressure energy, and friction head subtracts losses. This is why the velocity head term, h_v, is the correct choice.