An analytical solution for local pressure drop due to obstructions in horizontal air-water twophase
flow was presented. Various obstruction shapes with size were investigated. An analysis
based on the momentum conservation through obstruction region. The relationship between twophase
multiplier and local (normalized) pressure drop with the gas superficial velocity were
investigated. The results showed, a higher pressure drops pointed for larger obstructions. The
present results was verified with experimental investigations.
