Pressure Losses across Multiple Fittings in Ventilation Ducts
Figure 2
Cross-section of the duct with two types of flat-plate fittings (shaded area). (a) Centrally placed fittings; m, 0.05 m, 0.075 m. (b) The geometries consisted of plates protruding symmetrically from both sides of the duct, leaving a central vertical strip of the duct open, later called a centrally opened fitting; m, 0.05 m, 0.075 m.