Menni, YounesGhazvini, MahyarAmeur, HouariAhmadi, Mohammad HosseinSharifpur, MohsenSadeghzadeh, Milad2020-11-132020-11-132020Younes Menni , Mahyar Ghazvini , Houari Ameur , Mohammad Hossein Ahmadi , Mohsen Sharifpur & Milad Sadeghzadeh (2020) Numerical calculations of the thermalaerodynamic characteristics in a solar duct with multiple V-baffles, Engineering Applications of Computational Fluid Mechanics, 14:1, 1173-1197, DOI: 10.1080/19942060.2020.1815586.1994-2060 (print)1997-003X (online)10.1080/19942060.2020.1815586http://hdl.handle.net/2263/76983The study aimed to enhance the heat transport by improving the hydrodynamic structure of the system by changing and restructuring the duct’s internal geometry. Modern fins, of the shape ‘V’, have been proposed with different dimensions, and they are periodically arranged over the duct surfaces. The most important steps of this research are the change in the V-fin attack-angle (40°–80°), length (Hb/2, 3Hb/4, Hb, 5Hb/4 and 3Hb/2), and separation length (Ds/2, 3Ds/4, Ds and 5Ds/4), as well as the flow rate (6 × 103–3 × 104). The study yielded an optimum case for a 40-degree attack-angle, with a factor of thermal enhancement of 2.163 for the highest value of Reynolds number. On the other hand, improving the length of the V-fins or decreasing in the space between them, increases the flow strength by enlarging the recycling cells, which reflects on the hydrodynamic behavior, and changes the heat transfer. The presence of this new model offins also highlights a hydrothermal improvement ranging between 1.196 and 23.779 percent compared to the previously indicated models, reflecting the effectiveness of the new system of solar heat exchangers with air V-finned ducts.en© 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License.CFDSolar heat exchangersAir V-finned ductsRecycling cellsHeat transferEngineering, built environment and information technology articles SDG-04SDG-04: Quality educationEngineering, built environment and information technology articles SDG-07SDG-07: Affordable and clean energyEngineering, built environment and information technology articles SDG-09SDG-09: Industry, innovation and infrastructureEngineering, built environment and information technology articles SDG-12SDG-12: Responsible consumption and productionEngineering, built environment and information technology articles SDG-13SDG-13: Climate actionArticle