A numerical study of the arc-roof and the one-sided roof enclosures based on the entropy generation minimization

Ziapour, Behrooz M.; Dehnavi, Resam

doi:10.1016/j.camwa.2012.01.012

Cited by 3 publications

(6 citation statements)

References 26 publications

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“…In general terms, it has been observed that the air flow movement will present different velocities depending on the shape of the roof [110]. This same roof geometry will affect the heat transfer values and, therefore, the temperature distribution in that region of the greenhouse [136]. On the other hand, recent studies have recommended the octagonal-type greenhouse because they have better ventilation rates and better temperature distribution compared to greenhouses equipped with side and roof ventilation [137].…”

Section: Frequently Cited Documentsmentioning

confidence: 99%

Research on the Microclimate of Protected Agriculture Structures Using Numerical Simulation Tools: A Technical and Bibliometric Analysis as a Contribution to the Sustainability of Under-Cover Cropping in Tropical and Subtropical Countries

2021

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The use of protected agriculture structures in tropical and subtropical countries is the main alternative for intensification of agricultural production selected by producers. In general, in these regions, passive and plastic-covered structures predominate, with natural ventilation as the only method of climate control. This phenomenon has been widely studied in different types of structures using computational fluid dynamics (CFD) simulation. Therefore, this review aimed to collect and analyze the publications generated in this field of knowledge between 2010 and 2020. The search for information included the main academic databases available on the web and the analysis was carried out using bibliometric techniques, from which it was possible to identify details inherent to the scientific production, such as countries of origin, main authors, journals, and citations. Likewise, a detailed breakdown of the relevant technical information of the three phases of numerical simulation, such as preprocessing, processing, and postprocessing, was carried out. A compilation of 118 papers published in 65 journals, written by 256 authors, originating from 24 countries was achieved, where it was evident that Mexico and Colombia were the countries with the highest scientific production in the last decade. These papers analyzed, together, a total of 17 different types of structures where polyethylene-covered greenhouses predominated, with steady state simulations, for daytime climate conditions and without the presence of crops. Within the current and future research trends, the predominance of studies analyzing passive climate control methods, new models of insect-proof mesh-house structures, and, finally, studies focused on the structural analysis of greenhouses was found.

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Section: Frequently Cited Documentsmentioning

confidence: 99%

Research on the Microclimate of Protected Agriculture Structures Using Numerical Simulation Tools: A Technical and Bibliometric Analysis as a Contribution to the Sustainability of Under-Cover Cropping in Tropical and Subtropical Countries

2021

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“…The entered sun rays to a greenhouse can shine freely to the greenhouse floor, when the entropy generation is reached its lowest value; and then, the process of photosynthesis will occur in the desired form. Finally, plants grow faster [12]. In Fig.…”

Section: Description Of Models Geometriesmentioning

confidence: 99%

“…The two-dimensional incompressible viscous flow governing equations in non-dimensional form and with artificial compressibility has been obtained in our previous work [12]. Also, dimensionless of the volumetric entropy generation in flow (Ṡ l,a ), the irreversibility in heat transfer (Ṡ l,a,f ), the fluid friction (Ṡ l,a,f ), the ratio between the viscous and thermal irreversibilities (ϕ), the bulk temperature (T 0 ) and the dimensionless total entropy generation (Ṡ T ,a ) have been defined in that work.…”

Section: Validation Of the Computational Schemesmentioning

confidence: 99%

“…1, 2 and 3. The boundary conditions of these models were selected based on the benchmark solution that was used for validation of models [12]. In the benchmark solution the model changes slowly to cited work as the following descriptions:…”

Section: Description Of Models Geometriesmentioning

confidence: 99%

“…Natural convection of the laminar air flow in a large triangular-roof enclosure can be applied for roof of the industrial buildings or greenhouses. Study of the natural convection in right-angle triangular enclosures has been widely conducted in earlier works [9][10][11][12]. Ziapour and Dehnavi introduced an enhanced finite-volume method for solving the arc-roof and the one-sided roof enclosures.…”

Section: Introductionmentioning

confidence: 99%

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A numerical study of the arc-roof and the one-sided roof enclosures based on the entropy generation minimization

Cited by 3 publications

References 26 publications

Research on the Microclimate of Protected Agriculture Structures Using Numerical Simulation Tools: A Technical and Bibliometric Analysis as a Contribution to the Sustainability of Under-Cover Cropping in Tropical and Subtropical Countries

Research on the Microclimate of Protected Agriculture Structures Using Numerical Simulation Tools: A Technical and Bibliometric Analysis as a Contribution to the Sustainability of Under-Cover Cropping in Tropical and Subtropical Countries

Heat transfer in a large triangular-roof enclosure based on the second law analysis

Entropy generation vs energy efficiency for natural convection based energy flow in enclosures and various applications: A review

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