A review of CFD methodology used in literature for predicting thermo-hydraulic performance of a roughened solar air heater

Gawande, Vipin B.; Dhoble, Ashwinkumar S.; Zodpe, D. B.; Chamoli, Sunil

doi:10.1016/j.rser.2015.10.025

Cited by 92 publications

(12 citation statements)

References 29 publications

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“…After the domain was created, the meshing or grid generation was performed to divide the airflow domain into a number of subdomains (elements or cells). In this step, the hexahedron and tetrahedron elements are usually used in the Table 2 The differences between experimental and computational approaches [60] .…”

Section: Preprocessingmentioning

confidence: 99%

Computational fluid dynamics modelling of human upper airway: A review

Faizal

Ghazali

Khor

et al. 2020

Computer Methods and Programs in Biomedicine

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Background and objective: Human upper airway (HUA) has been widely investigated by many researchers covering various aspects, such as the effects of geometrical parameters on the pressure, velocity and airflow characteristics. Clinically significant obstruction can develop anywhere throughout the upper airway, leading to asphyxia and death; this is where recognition and treatment are essential and lifesaving. The availability of advanced computer, either hardware or software, and rapid development in numerical method have encouraged researchers to simulate the airflow characteristics and properties of HUA by using various patient conditions at different ranges of geometry and operating conditions. Computational fluid dynamics (CFD) has emerged as an efficient alternative tool to understand the airflow of HUA and in preparing patients to undergo surgery. The main objective of this article is to review the literature that deals with the CFD approach and modeling in analyzing HUA.Methods: This review article discusses the experimental and computational methods in the study of HUA. The discussion includes computational fluid dynamics approach and steps involved in the modeling used to investigate the flow characteristics of HUA. From inception to May 2020, databases of PubMed, Embase, Scopus, the Cochrane Library, BioMed Central, and Web of Science have been utilized to conduct a thorough investigation of the literature. There had been no language restrictions in publication and study design of the database searches. A total of 117 articles relevant to the topic under investigation were thoroughly and critically reviewed to give a clear information about the subject. The article summarizes the review in the form of method of studying the HUA, CFD approach in HUA, and the application of CFD for predicting HUA obstacle, including the type of CFD commercial software are used in this research area.

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Section: Preprocessingmentioning

confidence: 99%

Computational fluid dynamics modelling of human upper airway: A review

Faizal

Ghazali

Khor

et al. 2020

Computer Methods and Programs in Biomedicine

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“…Computational fluid dynamics (CFD) is a highly powerful tool to predict the performance and can help us to optimize the dryer geometry under given operating conditions without actually performing too many experiments. Various solar based designs like (a) solar air heater [6][7][8][9]; (b) drying systems such as direct, indirect, mixed [10][11][12] were simulated using computational fluid dynamics CFD modelling helps us to get the detailed inside look in the flow field development, temperature distribution [13], humidity profiling and drying time [14].…”

Section: Introductionmentioning

confidence: 99%

Augmenting natural convection and conduction based solar dryer

Chavan

Sikarwar

Tidke

et al. 2018

Proceedings of 21th International Drying Symposium

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Solar conduction dryer (SCD) is a unique technology that uses conduction, convection and radiation mechanism of heat transfer making it one of the most efficient drying system. The SCD is one of the most effective piece of equipment’s designed indigenously and it has tremendous potential to capitalize in erstwhile nations of tropical and torrid region where there is abundance of solar insolation. SCD, the most cost-effective dryer which runs on no electricity has already made inroads in the global market. In the present study, CFD studies were carried out for a given geometry and the corresponding boundary conditions. Keywords: Solar Energy; Solar Conduction Dryer; CFD modeling

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“…Studies using CFD techniques were fewer in the last decade [19,20], but their number is in constant growth because of the computer technology development and several numerical codes available [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of the Effect of Two Type of Ribs on Thermal Performance of Solar Air Heaters

2017

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Abstract. This paper aims to analyze uid ow characteristics and heat transfer augmentation in the air duct of a solar air heater using CFD techniques. The air duct has a rectangular section, the top wall is the glazing and the bottom one is the absorber provided with transverse rectangular or squared ribs. The simulations are performed in the turbulent regime and RANS formulation is used to model the ow and resolve mass, momentum, and energy equations using Finite Volumes method. The air ow analysis shows that the velocity pro le is not disturbed by the ribs outside the laminar sublayer. Heat transfer analysis based on the calculation of Nusselt Number, friction factor, and thermo-hydraulic performance highlights the heat transfer enhancement and no big friction losses are recorded. A comparative study between two rib shapes (square and rectangular) is performed, which shows better thermohydraulic performance of the rectangular ribs.

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A review of CFD methodology used in literature for predicting thermo-hydraulic performance of a roughened solar air heater

Cited by 92 publications

References 29 publications

Computational fluid dynamics modelling of human upper airway: A review

Computational fluid dynamics modelling of human upper airway: A review

Augmenting natural convection and conduction based solar dryer

Comparative Study of the Effect of Two Type of Ribs on Thermal Performance of Solar Air Heaters

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