Summary
CFD simulations compare three diffuser-shaped chimney designs (fully divergent, flared outlet, flared inlet) against a straight cylindrical tower, with the fully divergent shape yielding roughly 13.5 times more power. Expansion losses tied to geometry explain the differences, and an adjustable outlet control strategy kept output steady for 7 hours while raising it by about 60%.
Description written by Solar Tower. The original abstract is available from the publisher via the link below.