A Critical Review of Multiple Impingement Jet Mechanisms for Flow Characteristics and Heat Transfer Augmentation

Impingement jet is one of the most important ways to enhance the heat transfer and fluid flow characteristics. The Heat transfer augmentation research has been carried out over the last several decades to enhance the heat transfer augmentation used currently. Although, data is still limited regarding twin jet impingement and heat transfer augmentation using twin jets. This critical review illustrates a very comprehensive analysis of both experimental and numerical. This article aims to provide a detailed review of the twin impingement jets mechanism and the design’s physical knowledge. The article also intends to give a detailed review on using twin impingement applications, where the factors that influence heat transfer are categorized. The impingement heat transfer and characteristics of twin impingement jets are mainly focused on. This critical review aims to confirm the deficiency of knowledge on the impingement of twin jets on flow and heat transfer enhancement and to identify the crucial parameters regarding this issue. This critical review aims to epitomize current advancements in research on the characteristics of heat transfer of twin impingement jets to come up with several possible reasons why the change of parameters and applications of jets can augment the transfer of heat of traditional fluids and come up with a guideline for research in the future. The influence of pulsation frequency on the augmentation of heat transfer was discussed, and it can offer a view regarding the behaviour of heat transfer development and jet flow. Furthermore, the future directions of Nanocoating in the impingement jet techniques need more investigation regarding the deficiency in the literature.