Guest Editors
Prof. Dr. Jamal‑Eddine Salhi
Email: j.salhi@ump.ac.ma
Affiliation: Department of Mechanical Engineering, Laboratory of Energetics (LE), Abdelmalek Essaâdi University, Tangier, Morocco
Homepage:
Research Interests: thermal engineering, fluid dynamics, CFD modeling, heat transfer enhancement, solar thermal systems, Trombe walls, heat exchangers, energy efficiency in buildings, hybrid nanofluids, thermo‑hydraulic optimization

Dr. Tarik Zarrouk
Email: zarrouk.tarik@ump.ac.ma
Affiliation: Laboratory of Engineering Sciences, Lean Manufacturing and Mechanical Modeling Team, National School of Applied Sciences, Oujda, Morocco
Homepage:
Research Interests: heat transfer, fluid mechanics, material processing, manufacturing

Prof. Dr. Mohammed Jeyar
Email: jeyar.mohammed.88@gmail.com
Affiliation: Laboratory of Materials, Waves, Energy and Environment, Department of Applied Engineering Mohamed first University, Oujda, Morocco
Homepage:
Research Interests: fluid dynamics, CFD modeling, heat transfer

Summary
The rapid development of energy‑efficient systems and advanced thermal devices has significantly increased the demand for innovative solutions in fluid dynamics and heat transfer enhancement. This Special Issue aims to present recent theoretical, numerical, and experimental advances in thermo‑hydrodynamic optimization of fluid flow systems with applications in energy, industry, and the built environment. Particular emphasis is placed on advanced CFD modeling, innovative geometric modifications, passive and active enhancement techniques, and the use of novel working fluids such as nanofluids and hybrid nanofluids.
The Special Issue seeks high‑quality contributions addressing fundamental fluid flow phenomena as well as applied studies related to heat exchangers, solar thermal systems, building energy applications, and thermal management technologies. By combining fluid mechanics, materials considerations, and energy conversion perspectives, this issue will provide a comprehensive platform for researchers and engineers to share innovative approaches and validated methodologies. The collected works are expected to contribute to the development of more efficient, sustainable, and optimized thermal‑fluid systems, in line with the scope and objectives of Fluid Dynamics & Materials Processing.
Keywords
fluid dynamics, heat transfer, CFD, thermo‑hydraulic optimization, energy systems, heat exchangers, renewable energy, nanofluids, thermal enhancement