Abstract
The presence in two-component flows of a second component in the form of solid inclusions (with a particle size up to 25 mm) or polymer additives (reducing the linear head losses in uniform turbulent flows) does not affect the extent of local hydraulic resistances expressed in fractions of the velocity head of the mixture. This conclusion is indirectly confirmed by the independence of the discharge coefficients of contracting devices — flow-meters — and the cavitation characteristics of centrifugal pumps from the presence of the second component.
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