Propeller Wall-Blockage Performance Corrections

摘要

Overall, the analytical, experimental, and computational evidence seems to support the assertion that, for nominally small levels of blockage, α < 0.25, virtually no correction to the thrust is warranted for wind-tunnel data. For CFD studies, where more precision is possible, faster calculations made with limited sized domains (and thus high blockage levels) can be confidently corrected using Eq. (13b). Additionally, caution needs to be exercised in both experimental and numerical studies to not violate the freestream velocity/power limitation exposed herein.