Original ResearchPublished 17 September 2026Taguchi–grey relational analysis and response surface methodology for heat transfer optimization in tri-hybrid nanofluid flow with slip and heat source/sink effectsKhaled Matarneh · Liaquat Ali Lund · Jawad Raza · Umair Khan · J. U. ViharikaFrontiers in Physicsdoi 10.3389/fphy.2026.1926544