Enhancement of exhaust manifolds using hybrid Graphene-TiO2 nano fluids in multi-cylinder diesel engines: A CFD study on TiO2 advantages. - Ramesh Kumar, R.; Channa Keshava Naik, N.; ALI, Ali B. M.; Bharath, L.; AL-NUSSAIRI, Ahmed Kateb Jumaah; Vijaykumar, B. P.; KHAN, Amir; SMERAT, Aseel; KHAN, Anwar (Journal of Thermal Engineering, 2026)