Effect of porous blocks on flow development through a serpentine cooling passage under stationary and rotating conditions

• Porous block influences the flow development in a serpentine cooling passage. Quantative comparison of between smooth and porous blocks channel. Rotation effect on overall character for fluid through along duct. The pressure coefficient is found to decrease linearly channel, due high blockage by blocks. This study investigates how inclusion passage, which consists two straight square-sectioned ducts connected with square-ended bend. Aluminium foam have been attached opposite walls sections normal bend staggered manner, used as turbulence promoters. investigation considers flows passage stationary conditions, orthogonal rotation. Particle image velocimetry (PIV) map out development. wall static distribution sides (the leading trailing under rotating conditions) also provided. Tests are carried at Reynolds numbers 16,000, 26,000 36,000 rotation 0.32 0.64. Preliminary tests, (without blocks) identical geometry, establish reference conditions enable identification quantification effects PIV results show meandering manner both upstream downstream region, presence Within bend, contrast case section, single vortex dominates flow. While does not change character, it force more (pressure) side For section long enough become periodic over successive rib intervals, produces very attractive data CFD validation. These include mean well second-moment profiles. shape profile but causes greater reduction