Guest Editors
Dr. Adebowale Martins Obalalu
Email: adebowaleobalalu17@gmail.com
Affiliation: Department of Mathematics and Statistics, Kwara State University, 241104 Malete, Nigeria
Homepage:
Research Interests: Applied and Computational Mathematics, Computational Fluid Dynamics

Assist. Prof. Umair Khan
Email: umairkhan@sakarya.edu.tr
Affiliation: Department of Mathematics, Faculty of Science, Sakarya University, 54187 Serdivan, Turkey
Homepage:
Research Interests: Fluid dynamics, Heat transfer

Summary
1. Background
The continuous demand for energy-efficient technologies and high-performance thermal systems has led to the evolution of innovative fluidic materials, among which ternary hybrid nanofluids have emerged as a promising class. These advanced fluids consist of three distinct types of nanoparticles dispersed in a conventional base fluid (such as water, ethylene glycol, or oil), offering significantly enhanced thermal conductivity, viscosity control, and heat transfer characteristics. When exposed to thermal radiation, especially in high-temperature and radiative heat environments, the behavior of these fluids changes dramatically. Understanding these interactions is crucial for a wide range of industrial and engineering applications, including thermal processing of materials, energy systems, solar thermal collectors, microchannel heat sinks, metal extrusion, and additive manufacturing. Despite the promising potential of ternary hybrid nanofluids, studies on their behavior remain limited. This special issue seeks to fill this gap by inviting original research articles and reviews that explore theoretical, experimental, and numerical investigations of ternary hybrid nanofluids in various environments relevant to fluid dynamics and materials processing.
2. Scope and Topics
This special issue invites contributions that address—but are not limited to—the following themes:
Formulation and characterization of ternary hybrid nanofluids
Influence of thermal radiation on fluid flow and heat transfer
Non-Newtonian behavior and thermophysical properties of nanofluids
3. Objectives
To present recent advances in the modeling and application of ternary hybrid nanofluids in radiative environments.
To develop a comprehensive understanding of thermal radiation effects on nanofluid flow and energy transfer.
Keywords
Ternary hybrid nanofluids; Thermal radiation; Heat transfer enhancement; Fluid dynamics; Materials processing; Radiative heat flux; Computational fluid dynamics (CFD); Thermophysical properties; Entropy generation; Nanoparticle suspension technology