Optimization of air distribution mode coupled interior design for civil aircraft cabin

Pang, Liping; Li, Pei; Bai, Lizhan; Zhou, Yue; Yao, Jun

doi:10.1016/j.buildenv.2018.02.019

Cited by 21 publications

(16 citation statements)

References 18 publications

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“…In addition to experimental studies, computational fluid dynamics (CFD) has been used extensively in the cabin environment, to design and optimize air supply, [24][25][26][27][28] predict transient particle transport, [29][30][31] evaluate airborne infectious diseases risks, [32][33][34] and identify source location. 35,36 For example, Qian et al 32 calculated the distributions of the air velocity, air temperature, and CO 2 concentration in a section of a Boeing 767 aircraft cabin with a mixing ventilation system.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to experimental studies, computational fluid dynamics (CFD) has been used extensively in the cabin environment, to design and optimize air supply, predict transient particle transport, evaluate airborne infectious diseases risks, and identify source location . For example, Qian et al combined the CFD simulations and Wells‐Riley equation to evaluate the spatial distribution of infection risk of SARS transmission in a hospital ward.…”

Section: Introductionmentioning

confidence: 99%

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Evaluating the commercial airliner cabin environment with different air distribution systems

You

Lin

Wei³

et al. 2019

Indoor Air

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Ventilation systems for commercial airliner cabins are important in reducing contaminant transport and maintaining thermal comfort. To evaluate the performance of a personalized displacement ventilation system, a conventional displacement ventilation system, and a mixing ventilation system, this study first used the Wells-Riley equation integrated with CFD to obtain the SARS quanta value based on a specific SARS outbreak on a flight. This investigation then compared the three ventilation systems in a seven-row section of a fully occupied, economy-class cabin in Boeing 737 and Boeing 767 airplanes. The SARS quanta generation rate obtained for the index patient could be used in future studies. For all the assumed source locations, the passengers' infection risk by air in the two planes was the highest with the mixing ventilation system, while the conventional displacement ventilation system produced the lowest risk. The personalized ventilation system performed the best in maintaining cabin thermal comfort and can also reduce the infection risk. This system is recommended for airplane cabins. K E Y W O R D S computational fluid dynamics (CFD), displacement ventilation, infectious disease transmission, mixing ventilation, personalized ventilation, thermal comfort | 841 YOU et al.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluating the commercial airliner cabin environment with different air distribution systems

You

Lin

Wei³

et al. 2019

Indoor Air

View full text Add to dashboard Cite

show abstract

“…The purpose of the CFD study was to develop and validate a computer model that could be used for accurate airflow assessment, considering different strategies, as well as different structures. CFD methods have been used by researchers before to evaluate air distribution methods [40,44,[52][53][54].…”

Section: Numerical Simulationmentioning

confidence: 99%

An Air Terminal Device with a Changing Geometry to Improve Indoor Air Quality for VAV Ventilation Systems

Szczepanik-Ścisło

Schnotale

2020

Energies

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This study aimed to develop a new concept for an air terminal device for a VAV (variable air volume) ventilation system that would improve overall ventilation efficiency under a varying air supply volume. In VAV systems, air volume is modified according to the thermal load in each ventilated zone. However, lowering the airflow may cause a lack of proper air distribution and lead to the degradation of hygienic conditions. To combat this phenomenon, an air terminal device with an adapting geometry to stabilize the air throw, such that it remains constant despite the changing air volume supplied through the ventilation system, was designed and studied. Simulations that were performed using the RNG k–ε model in the ANSYS Fluent application were later validated on a laboratory stand. The results of the study show that, when using the newly proposed terminal device with an adaptive geometry, it is possible to stabilize the air throw. The thermal comfort parameters such as the PMV (predicted mean vote) and PPD (predicted percentage of dissatisfied) proved that thermal comfort was maintained in a person-occupied area regardless of changing airflow though the ventilation system.

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“…[16]. It has been used in many complex applications that include airflows, complex geometries and air terminal devices [17][18][19][20], thus proving to be a valid tool and the reasonable choice for this study. During the simulation, a turbulent model k-ε was used: a model of two equations in which the turbulent viscosity depends on kinetic energy "k" and turbulent dispersion "ε" [21].…”

Section: Cfd Simulation Set-upmentioning

confidence: 99%

PIV measurement and CFD simulations of an air terminal device with a dynamically adapting geometry

2019

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Air quality is an important factor for human well-being, and it is crucial that when using mechanical ventilation system, air is properly distributed so it reaches every user of a ventilated zone. To improve ventilation systems, and in consequence the air quality, this paper focuses on studying the impact of an air terminal device (ATD) with a dynamically changing geometry on the effectiveness of a variable air volume (VAV) ventilation system. VAV system characterizes a change in the airflow magnitude through the system when the heat gains lower, which may be a risk for human health as air may not reach the furthest parts of a zone. To combat this threat, an ATD with a dynamically changing geometry was installed. As a ventilation quality indicator, the air throw was taken under consideration. Thanks to the new ATD, the steady air throw should be maintained despite the changes in flow in the ventilation system. To achieve this, the research was divided into two stages. The first stage included a series of computational fluid dynamics simulations that considered the alteration of the airflow and the air terminal device diameter. Afterwards, verifying laboratory measurements were conducted on a laboratory stand using a particle image velocimetry (PIV) system that included an air terminal device with a changing geometry. The results of the simulations and the PIV measurements showed that the changes in the geometry of the air terminal device improve the ventilation effectiveness of a VAV system, allowing the system to maintain a constant air throw despite the changing airflow magnitude through the system.

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Optimization of air distribution mode coupled interior design for civil aircraft cabin

Cited by 21 publications

References 18 publications

Evaluating the commercial airliner cabin environment with different air distribution systems

Evaluating the commercial airliner cabin environment with different air distribution systems

An Air Terminal Device with a Changing Geometry to Improve Indoor Air Quality for VAV Ventilation Systems

PIV measurement and CFD simulations of an air terminal device with a dynamically adapting geometry

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