Impact of a wall downstream of an air curtain nozzle on air curtain separation efficiency

Khayrullina, AA Adelya; Blocken, Bje Bert; Almeida, Maria Odete Magalhães de; Hooff, T. van; Heijst, Gert Jan van

doi:10.1016/j.buildenv.2021.107873

Cited by 15 publications

(2 citation statements)

References 30 publications

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“…The validation metric RMSE (Table 9) indicates that the higher the turbulence intensity, the better the agreement for air temperature is. The main difference is at the second vertical line ((X-X c )/d = 3.33), where the TKE profile is not self-similar and the jet flow is in its transitional state [107,108]. All the imposed inlet turbulence quantities slightly underestimate the physical diffusion of air temperature in the jet core region along this line.…”

Section: Inlet Turbulence Quantities 531 Inlet Turbulence Intensitymentioning

confidence: 94%

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

Kang

Hooff

2022

International Journal of Thermal Sciences

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Section: Inlet Turbulence Quantities 531 Inlet Turbulence Intensitymentioning

confidence: 94%

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

Kang

Hooff

2022

International Journal of Thermal Sciences

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“…While most air curtains do not, some do so via a return duct located opposite the air jet output [17]. Implementation of air curtain will cause separation of two environments without restricting the opening access of these environments [18]. The sealing of cold storage room entrances [19], the apertures of refrigerator display cabinets [20], and smoke confinement [21] are the common applications of air curtains in pollution management.…”

Section: Introductionmentioning

confidence: 99%

A CFD assessment on ventilation strategies in mitigating healthcare-associated infection in single patient ward

Kek

Tan

Sheng

et al. 2023

PROGEE

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A promising ventilation strategy is an effective measure to enhance indoor air quality and protect the patients against healthcare-acquired infection. The Computational Fluid Dynamics (CFD) model represents a patient ward that was constructed using Computer-Aided Design (CAD) software. The simulated results were verified and validated based on the published data. A Renormalization Group (RNG) k-epsilon model based on the Eulerian approach was used to simulate the airflow turbulence, while a discrete phase model (DPM) based on the Lagrangian approach was used to predict the dispersion of airborne particles. This study examined four cases of ventilation strategies, with varying ventilation rates, positioning of supply air diffusers, and location of exhaust grilles. This study revealed that the installation of air curtain jet coupled with a ceiling-mounted air supply diffuser (case 3) above the patient-occupying zone has the highest wiping efficiency against the infectious particles. The utilization of ventilation strategy in case 3 managed to reduce the particle by approximately 3.3 times as compared to the baseline case. The study outcome also suggested that the exhaust grilles should be placed on the upper wall, to ensure a proper mixing of fresh air in the entire patient ward.

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Surface pressure fluctuations in wall jets with different plate lengths

Arackal

Jothi

2021

Exp Fluids

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Impact of a wall downstream of an air curtain nozzle on air curtain separation efficiency

Cited by 15 publications

References 30 publications

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

A CFD assessment on ventilation strategies in mitigating healthcare-associated infection in single patient ward

Surface pressure fluctuations in wall jets with different plate lengths

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