Comparison of simulation methods for dynamic internal air distribution in naturally ventilated livestock buildings

Lv, Yuling; Yao, Huimin; Li, Ang; Yi, Qianying; Janke, David; Amon, Thomas; Jr, Gerald DS Quoie; Xiong, Shuidong; Long, Zhengwei

doi:10.1016/j.compag.2022.107427

Cited by 2 publications

(4 citation statements)

References 40 publications

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“…In approach (1), the size of the computational domain is a function of the building dimensions, always being necessary to include a sufficient surrounding volume for the flow to be fully developed windward and leeward [22,48]. Whenever this type of approach is used to represent the model of an animal facility in the computational domain, the computational volume of a height ≥ 5 × H (H = highest height of the facility within the computational domain), as well as the distance to the ends ≥ 10 × H (upstream and downstream of the interesting facility), as shown in Figure 3 [22,73]. Another form to define the required computational domain is via the blockage rate, obtained from the ratio between the projected frontal area (windward) of the obstacles and the cross-section of the computational domain [74].…”

Section: Cbps Typology and Computational Domainmentioning

confidence: 99%

“…The CFD technique has been widely used to study heat and mass transfer in facilities for the following production animals: cattle, poultry, and swine [10][11][12]15,16,[20][21][22][23][24][25]27,29,30,[32][33][34][35][36][37][38][39][40][41][42][43][44]65,[67][68][69][70][71][72][73][74][75][76]. This can be evidenced by the increase in the number of peer-reviewed experimental articles that use this technique for modeling animal facilities (Figure 4).…”

Section: Cfd Studies Performed On Cbpsmentioning

confidence: 99%

“…Alternative and complementary to field studies, the assessment of thermal environmental and bedding conditions can be performed using numerical methods, including the Computational Fluid Dynamics technique-CFD [21,22]. CFD is one of the main techniques that uses numerical methods to characterize, interpret, and quantify heat and mass transfer phenomena using the numerical solution of conservation equations via computation [7,23].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Heat and Mass Transfer in Compost-Bedded Pack Barns for Dairy Cows Using Computational Fluid Dynamics: A Review

Oliveira,

Tinôco,

Sousa

et al. 2023

Applied Sciences

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To ensure a supply of dairy products, modern dairy farming has assumed an intensive nature, characterized by production in collective facilities with the presence of thermal conditioning, some automation level, and high-use inputs. Among the systems used for dairy cattle confinement, Compost-Bedded Pack Barns (CBPs) have been gaining importance and increasingly have been used in recent decades. CBPs must be designed and managed to ensure the best thermal comfort conditions throughout the year and, consequently, improve productivity, milk quality, and the health of the dairy herd. In this context, modeling via Computational Fluid Dynamics (CFD) emerges as a tool with huge potential for studying the thermal environmental conditions in the beds of CBPs, making it possible to improve projects and/or management practices in this kind of facility. This document is organized as a review, and its objective is to present the state of the art of the applicability of the CFD technique in the study of heat and mass transfer in CBP systems. So far, only four studies have used CFD for modeling CBP systems and have shown that the use of this tool helps to better understand the phenomena of heat and mass transfer in this kind of facility. Therefore, it is important that more studies using this technique in CBP systems be conducted, including additional considerations on constructive elements, animals, and the presence of beds in composting.

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Section: Cbps Typology and Computational Domainmentioning

confidence: 99%

Section: Cfd Studies Performed On Cbpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Heat and Mass Transfer in Compost-Bedded Pack Barns for Dairy Cows Using Computational Fluid Dynamics: A Review

Oliveira,

Tinôco,

Sousa

et al. 2023

Applied Sciences

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“…adopting a different software. Abu-Zidan focuses on the computational implications of the CFD simulation of tall buildings [63], while Lv et al focus on naturally ventilated livestock buildings [64], and Zheng et al [65] on simulation at the urban scale. A common consequence is the need for a considerable amount of time for both the preparation of the model and the computation, which is an issue even in experimental contexts (and even more in the ordinary design market).…”

mentioning

confidence: 99%

Exploring the Effects of Climate-Adaptive Building Shells: An Applicative Time-Saving Algorithm on a Case Study in Bologna, Italy

Gaspari

Fabbri

2022

Energies

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Adaptive façades represent a viable and effective technological solution to reduce the building energy demand for cooling while achieving interesting aesthetic effects on the building envelope to screen solar radiation. During the last decade, many different design solutions, including those based on shape memory alloys, have been experimented to obtain appropriate responses without being dependent on electro-mechanically actuated systems. Several recent and ongoing studies have been published in the scientific literature regarding the different actuator typologies, as well as the different properties of the materials used, which usually determine the adaptive solution characteristics after a series of complex and time-consuming simulations using specialised dynamic modelling software. Due to the time and resources required, this kind of evaluation is usually delivered during the last and more advanced design stage as a form of assessment of already-taken architectural and technological choices. The study reported in the paper aims to offer a quick, time-saving simplified algorithm to calculate the response of an adaptive façade, according to the ISO 13790 standards, to be adopted during the early design stage to evaluate the possible effects of design decisions. The study includes three main steps: (a) the conceptualisation of the adaptive solution considering the context conditions; (b) the definition of the calculation algorithm; (c) the application of the method to a test room in a case study building located in Bologna for supporting the discussion of the related outcomes.

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Comparison of simulation methods for dynamic internal air distribution in naturally ventilated livestock buildings

Cited by 2 publications

References 40 publications

Analysis of Heat and Mass Transfer in Compost-Bedded Pack Barns for Dairy Cows Using Computational Fluid Dynamics: A Review

Analysis of Heat and Mass Transfer in Compost-Bedded Pack Barns for Dairy Cows Using Computational Fluid Dynamics: A Review

Exploring the Effects of Climate-Adaptive Building Shells: An Applicative Time-Saving Algorithm on a Case Study in Bologna, Italy

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