Performance evaluation of different pressure-velocity decoupling schemes in built environment simulation

Zhou, Pengzhi; Wang, Haidong; Dai, Yuwei; Huang, Chen

doi:10.1016/j.enbuild.2021.111763

Cited by 8 publications

(2 citation statements)

References 42 publications

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“…Due to the fact that the operating fluid is in the water channel and considering the low Reynolds numbers for the inlet fluid in the channel, Navier-Stokes relations for the fluid flow are considered as incompressible fluid with viscous dynamicsand a steady state condition. PISO procedure for pressure-velocity calculation in the Navier-Stokes equations has been adapted to this steady-state problem [27,28]. Hence the Navier-Stokes relations used in this case are as follows:…”

Section: Theoretical Modelmentioning

confidence: 99%

Application of Vortex Generators to Remove Heat Trapped in Closed Channels

Ahmed¹,

Binyamin²,

Abdullah³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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The utilization of vortex generators to increase heat transfer from cylinders installed inside a duct is investigated. In particular, a channel containing eight cylinders with volumetric heat sources is considered for different values of the Reynolds number. The effective possibility to use vortex generators with different sizes to increase heat transfer and, consequently, reduce the surface temperature of the cylinders is examined. Also, the amount of pressure drop inside the channel due to the presence of vortex generators is considered and compared with the cases without vortex generators. The results show that although the addition of generators increases the pressure drop, it strongly contributes to increase the heat transfer coefficient inside the duct (up to 80-90%).

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Section: Theoretical Modelmentioning

confidence: 99%

Application of Vortex Generators to Remove Heat Trapped in Closed Channels

Ahmed¹,

Binyamin²,

Abdullah³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

View full text Add to dashboard Cite

show abstract

“…With some sacrifice of accuracy, the FFD was found that to be 50 times faster than conventional CFD algorithm [7]. Comparing different derivative schemes of FFD, some schemes can achieve similar accuracy as traditional CFD with half of the computation time [8]. Based on the high computing speed of FFD, many studies combine FFD with other algorithms [9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of fast fluid dynamics with different solving schemes on scalar transport equation for predicting indoor contaminant concentration

Zhou

Wang²,

Dai³

et al. 2022

E3S Web Conf.

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Predicting the transport of indoor pollution can assist designer to optimize ventilation mode of room. However, the high computational cost restricts the wide implementation of computational fluid dynamics (CFD) technique to predict indoor contaminant concentration. This study evaluated three potential numerical methods with scalar transport equation to resolve this dilemma which were combine fast fluid dynamics (FFD) and different solving schemes on scalar transport equation. To test the performance of three potential numerical methods, the conventional PISO algorithm was also employed to compare. A threedimensional ventilation case with experimental data of indoor CO2 concentration was adopted. The results show that the FFD with iterative scheme of scalar transport equation could predicting indoor CO2 concentration efficiently. The numerical method with semi-Lagrangian method and iterative scheme for predicting indoor air contaminant concentration could obtain satisfactory results at large time step size.

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Fast fluid dynamics simulation of airflow around a single bluff body under different turbulence models and discretization schemes

Liu

Zhao

et al. 2022

Building and Environment

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Performance evaluation of different pressure-velocity decoupling schemes in built environment simulation

Cited by 8 publications

References 42 publications

Application of Vortex Generators to Remove Heat Trapped in Closed Channels

Application of Vortex Generators to Remove Heat Trapped in Closed Channels

Evaluation of fast fluid dynamics with different solving schemes on scalar transport equation for predicting indoor contaminant concentration

Fast fluid dynamics simulation of airflow around a single bluff body under different turbulence models and discretization schemes

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