CFD Analysis of Thermal Performance in a U-Tube Solar CollectorJamshid Tukhtabaev, Jakhongir Tursunov, Abdurahmon Abduvohidov, Bakhriddin Khasanov, Islom Kadirov and Mirolim NurillaevEPJ Web Conf., 355 (2026) 04006DOI: https://doi.org/10.1051/epjconf/202635504006