Professor

Hajjar Ahmad

Affiliation: VinUniversity, Hanoi, Viet Nam

CECS

Introduction

Ahmad Hajjar is an Assistant Professor of Mechanical Engineering in the College of Engineering and Computer Sciences, VinUniversity. Prior to joining VinUniversity in September 2023, he had been working as an Assistant Professor at the University of Lyon, France since 2019, and was a Research Fellow in the Centre for Offshore Research and Engineering at the National University of Singapore in 2018. He received his PhD in Mechanics – Civil Engineering from the University of Lorraine, France in 2017 and a Master’s degree in Mechanics and Energy Processes from the same university in 2014.

Affiliation: VinUniversity, Hanoi, Viet Nam

Research Output

All-around review on applying passive strategies to improve heat exchanger performance using inserts and turbulators applied in thermal storage

Kamaei Ruholla, Izadi Mohsen, Altnji Sam, Majdoub Fida, Hajjar Ahmad, Alqurashi Faris, Mohamed Mohamed H., Ben Hamida Mohamed Bechir

International Communications in Heat and Mass Transfer

DOI: 10.1016/j.icheatmasstransfer.2024.108234

All-around review
Heat exchanger
Inserts
Passive strategies
Thermal storage
Turbulators

Effect of anisotropic porous structure on mixed permanent magnetic-convection heat transfer under permanent twin magnets

Izadi Mohsen, Hajjar Ahmad, El Idi Mohamed Moussa, Lam, Alqurashi Faris, Mohamed Mohamed H.

International Communications in Heat and Mass Transfer

DOI: 10.1016/j.icheatmasstransfer.2024.107831

Anisotropic porous medium
Partitioned hexagonal enclosure
Simultaneous magnetic-convection effect

Fluid-structure interaction in engineering based on its applications: A plenary and up-to-date review

Afridi Muhammad Idrees, Izadi Mohsen, Eizadi Mohammad, Mohammed Hussein A., Karimi Reza, Alqurashi Faris, Mohamed Mohamed H., Hajjar Ahmad, Ben Hamida Mohamed Bechir, Mahariq Ibrahim, Rahimi Shayan, ...

Physics of Fluids

DOI: 10.1063/5.0234435

Energy storage and melting heat transfer of coconut oil-CuO aluminum open cell composite embedded in a double wavy wall cavity

Alsabery Ammar I., Ghalambaz Mohammad, Hajjar Ahmad, Younis Obai, Akremi Ali, Fteiti Mehdi, Hashim Ishak

Journal of Energy Storage

DOI: 10.1016/j.est.2024.112875

Double wavy wall cavity
Energy storage
Melting heat transfer
NePCM
Taguchi optimization method

Vibrational convection in thermal systems: Nano-encapsulated phase change material in a porous enclosure

Ben Khedher Nidhal, Aljibori Hakim S. Sultan, Mehryan, Hajjar Ahmad, Ghalambaz Mohammad, Boujelbene Mohamed, Elbashir Nasrin B.M., Mahariq Ibrahim

International Communications in Heat and Mass Transfer

DOI: 10.1016/j.icheatmasstransfer.2024.107719

Local thermal non-equilibrium model
NEPCM suspension
Porous enclosure
Thermal vibrational convection

Investigation of natural convection heat transfer in various structures of a partitioned triple porous enclosure under permanent magnetic field

Ayadi Badreddine, Hajjar Ahmad, Izadi Mohsen, EL Idi Mohamed Moussa, Said Lotfi Ben, Lam, Alqurashi Faris, Mohamed Mohamed H., Ali Mohamed R., Hendy Ahmed S.