Numerical Investigation and Thermal Performance Analysis of Smooth Absorber Tube in a Parabolic Trough Solar CollectorNigora Sodiqova, Bakhodir Jumayev, Munira Djurayeva, Madina Bobojonova and Firdavs UsmonovE3S Web Conf., 661 (2025) 04006DOI: https://doi.org/10.1051/e3sconf/202566104006