CFD model of acceleration of thermal-hydrodynamic processes in solar air collectors U Kh Ibragimov, S I Khamraev, T R Avanesov, A S Botirov and A B Sattorov E3S Web Conf., 411 (2023) 01024 Published online: 10 August 2023 DOI: 10.1051/e3sconf/202341101024