Numerical Investigation of Heat Transfer Rate Improvement in Heat Exchangers Utilizing Innovative Wavy Vortex Generators Adnan Q. Ibrahim, Riyadh S. Alturaihi Modelling and Simulation in Engineering, 2026 Quick‐cooling heat exchangers are used for a wide range of industrial applications. This study is aimed at employing the wavy surfaces of the vortex generators to reduce pressure drops and enhance heat transfer performance. The turbulent conditions for mixture (water and air) flow with Re w = 3500–5000. The current numerical results are supported by experimental data from earlier literature. Subsequently, the impact of the working fluid flow rate on the parameters ( N u / N u o ), ( f / f o ) and thermohydraulic performance (THP) is investigated for both water flow and mixture flow (water and air) in a downward configuration at a 15° angle of attack in an oval tube bank heat exchanger. Also, this study investigated the performance of wavy VGs and oval and circular tubes, as well as downward and forward configurations, across different angles of attack (15°, 20° and 25°) in the mixture flow (water and air) by using Ansys Workbench 19.0 and SolidWorks 2018. The design of wavy VGs achieves optimal performance at an angle of attack ( α = 15 ° ) for circular tube banks within a mixture flow, characterised by both transition and turbulent zones.
Enhancing of Heat Transfer Rate in the Heat Exchanger with Wavy Winglets Experimentally Adnan Q. Ibrahim, Riyadh S. Alturaihi Journal of Engineering United Kingdom, 2024 Heat convection plays an important role in many industries, equipment, and human lives, and heat exchangers emerge as fundamental devices for controlling this crucial orientation. The primary objective of this work was to assess the effect of single‐ and two‐phase flows associated with wavy winglets on heat exchanger performance. Two‐phase flows as the working fluid with wavy winglets are used in the oval tube bank heat exchanger (HE). The Reynolds number area (3639–4813) is investigated in this experimental work. Wavy winglets at an attack angle of 15° have been shown to affect heat transfer rate through comparisons between the experimental results and various water‐air mixture flow rates (Qw = 15, 17.5, and 20 Lpm) (Qa = 8.33, 16.67, and 25 Lpm). A Nusselt number (Nu) is increased by 64.5%, and the friction factor (f) is decreased by 12.6% in water flow; the Nu is increased by 15.5%, and f remains almost constant in water‐air mixture flow at moderate turbulent flow. It can be noted that the Nu and the performance parameter (j/f) are directly proportional to the velocity of flow at moderate turbulent flow with any increase in turbulent flow, and the Nu and j/f are inversely proportional to the velocity of flow. Many parameters have been studied experimentally to establish their impact on performance parameters.
Numerical Investigation for Single-Phase and Two-Phase Flow in Duct Banks with Multi Types of Vortex Generators Adnan Qahtan Ibrahim, Riyadh Sabah Alturaihi International Journal of Technology, 2023 This paper examines the numerical work of the thermal convection over tube banks with winglets through the heat exchanger in two parts under turbulent conditions. The first section investigates the influence of two-phase (water and air) flow on th
Experimental work for single-phase and two-phase flow in Duct banks with vortex generators Adnan Q. Ibrahim, Riyadh S. Alturaihi Results in Engineering, 2022 This work focused on enhancing heat convection coefficient using vortex generators available in various configurations in the bank of oval tubes with single and two-phase flow. Rate of heat transfer by convection and the reduction in pressure in rectangular Duct performed with winglets (Delta and Rectangular). Experimental work studied that under turbulent flow conditions. The experimental results have been compared to show the impact of Vortex generators and various water and air discharges on the heat transfer coefficient. The present work results show Delta winglets are given the best performance in the single-phase flow and the two-phase flow across the bank of the oval tubes. Various parameters have been investigated experimentally to determine their effect on the temperature distribution and heat transfer coefficient.
RECENT SCHOLAR PUBLICATIONS
Numerical Investigation of Heat Transfer Rate Improvement in Heat Exchangers Utilizing Innovative Wavy Vortex Generators RSA Adnan Q. Ibrahim Modelling and Simulation in Engineering , 2026 2026.0
Enhancing of Heat Transfer Rate in the Heat Exchanger with Wavy Winglets Experimentally AQ Ibrahim, RS Alturaihi Journal of Engineering 2024 (1), 2711718 , 2024 2024.0 Citations: 2
Numerical Investigation for Single-Phase and Two-Phase Flow in Duct Banks with Multi Types of Vortex Generators AQ Ibrahim, RS Alturaihi International Journal of Technology 14 (3) , 2023 2023.0 Citations: 3
Experimental work for single-phase and two-phase flow in duct banks with vortex generators AQ Ibrahim, RS Alturaihi Results in Engineering 15, 100497 , 2022 2022.0 Citations: 16
Production of Bio-Ethanol from Iraq Date Crop HAK Shahad, AQ Ibrahim Journal of Petroleum Research and Studies 7 (2), 108-126 , 2017 2017.0 Citations: 2
دراسة عملية لتحسين إنتاج الايثانول الحيوي من التمور العراقية HAK Shahad, AQ Ibrahim مجلة الكلية الاسلامية الجامعة 1 (38), 91-108 , 2016 2016.0
Review of Thermal Analysis for Banks of Tubes with Vortex Generator AQ Ibrahim, RS Alturaihi
MOST CITED SCHOLAR PUBLICATIONS
Experimental work for single-phase and two-phase flow in duct banks with vortex generators AQ Ibrahim, RS Alturaihi Results in Engineering 15, 100497 , 2022 2022.0 Citations: 16
Numerical Investigation for Single-Phase and Two-Phase Flow in Duct Banks with Multi Types of Vortex Generators AQ Ibrahim, RS Alturaihi International Journal of Technology 14 (3) , 2023 2023.0 Citations: 3
Enhancing of Heat Transfer Rate in the Heat Exchanger with Wavy Winglets Experimentally AQ Ibrahim, RS Alturaihi Journal of Engineering 2024 (1), 2711718 , 2024 2024.0 Citations: 2
Production of Bio-Ethanol from Iraq Date Crop HAK Shahad, AQ Ibrahim Journal of Petroleum Research and Studies 7 (2), 108-126 , 2017 2017.0 Citations: 2
Numerical Investigation of Heat Transfer Rate Improvement in Heat Exchangers Utilizing Innovative Wavy Vortex Generators RSA Adnan Q. Ibrahim Modelling and Simulation in Engineering , 2026 2026.0
دراسة عملية لتحسين إنتاج الايثانول الحيوي من التمور العراقية HAK Shahad, AQ Ibrahim مجلة الكلية الاسلامية الجامعة 1 (38), 91-108 , 2016 2016.0
Review of Thermal Analysis for Banks of Tubes with Vortex Generator AQ Ibrahim, RS Alturaihi