On approaches to couple energy simulation and computational fluid dynamics programs

Zhai, Zhiqiang; Chen, Qingyan; Haves, Philip; Klems, J.H.

doi:10.1016/s0360-1323(02)00054-9

Cited by 233 publications

(138 citation statements)

References 2 publications

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“…São capazes de predizer o desempenho da envoltória e dos sistemas de condicionamento artificial, as cargas de resfriamento e aquecimento, e o consumo energético. São algoritmos que modelam os balanços de energia e transferência de calor entre as superfícies da edificação (ZHAI;CHEN, 2001). …”

Section: Programas De Simulação Térmica E Energéticaunclassified

Métodos de aplicação da simulação computacional em edifícios naturalmente ventilados no clima quente e úmido

Trindade¹,

Pedrini²,

Duarte

2010

Ambient. constr.

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Métodos de aplicação da simulação computacional em edifícios naturalmente ventilados no clima quente e úmido Methods for applying computer simulation in naturally ventilated building in hot-humid climate Sileno Cirne Trindade Aldomar Pedrini Raimundo Nonato Calazans DuarteResumo ventilação natural é o principal recurso passivo para a obtenção do conforto térmico em climas quentes e úmidos, reduzindo também o consumo energético com condicionamento artificial. Entretanto, arquitetos fazem restrição a seu uso por não haver garantias de solução dos problemas de conforto térmico, quando comparada aos sistemas artificiais. Nesse sentido, decidiu-se investigar formas de prever o comportamento da ventilação natural em edifícios através de ferramentas de simulação computacional, visando apoiar a tomada de decisão no projeto de arquitetura. O objeto de estudo é o edifício pré-fabricado, do tipo galpão, considerado como típico na cidade de Natal, RN. Utilizaram-se um programa de dinâmica de fluidos computacional (CFD) e um de simulação térmica e energética de edificações. O artigo tem como foco a discussão dos procedimentos necessários para viabilizar as análises da ventilação, indicando como o método teve de ser adequado à complexidade de sucessivas abordagens, resultando em simplificações e incertezas de resultados. Para exemplificar a abordagem apresentam-se alguns resultados de simulações. Ao final, as limitações e potencialidades do método são discutidas com base nas características dos códigos de simulações utilizados, das condições de simulação e da representatividade dos modelos. Palavras-chave: Ventilação natural. Simulação computacional. Projeto arquitetônico. Abstract Natural air ventilation is the most important passive strategy to provide thermal comfort in hot-humid climates, also promoting a reduction in energy consumption

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Section: Programas De Simulação Térmica E Energéticaunclassified

Métodos de aplicação da simulação computacional em edifícios naturalmente ventilados no clima quente e úmido

Trindade¹,

Pedrini²,

Duarte

2010

Ambient. constr.

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“…Researchers have been studying methods to link CFD with energy simulation programs (Zhai et al 2002) in order to more accurately model air/envelope thermal interactions. Most simulation programs currently calculate the interior heat transfer under the assumption that the air within a room is well-mixed.…”

Section: Computational Fluid Dynamicsmentioning

confidence: 99%

Roles of building simulation tools in sustainable building design

Zhai

McNeill

2013

Build. Simul.

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“…Their work concluded with a case study to validate the performance of external coupling, and to highlight its potentials. Zhai et al (2002Zhai et al ( , 2003Zhai et al ( , 2004Zhai et al ( , 2005, and 2006) explored the principles, methodologies, strategies, implementation, and performance of energy simulation and CFD coupling. Their studies proved that the unique solution of coupling CFD and building energy simulation exists in theory, and they performed a sensitivity analysis of the coupling simulation.…”

Section: Simulation Of Temperature Distribution In a Room With Boundamentioning

confidence: 99%

A Review: Coupled Simulation of CFD and Network Model for Heat and Contaminant Transport in a Building

Kato

Zhang

2014

Journal of Asian Architecture and Building Engineering

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In this study, the coupled simulation of CFD (Computational Fluid Dynamics) and network model of building energy (heat) and airflow simulation is reviewed. The network model is a tool to describe the whole and macroscopic characteristics of heat or airflow transport in buildings, where heat flow or airflow is modeled as a network of one-dimensional flow elements. It can be conducted with comparatively less computational cost. The temperature or contaminant concentration of the room air is often not uniform but spatially distributed in a room, when the mixing efficiency of room airflow is not high enough, or when sources and respective sinks of heat or contaminant are located comparatively apart in a room. The CFD is a tool to describe these distribution characteristics precisely. It requires considerable computation amount and computational time. It is not light or simple to do compared with the network model computation. If one wants to analyze the whole and macroscopic characteristics of heat or flow transports in buildings including the distribution features of temperature or contaminant in a certain room, or if one wants to analyze the room airflow with the consideration of whole building heat and flow transport, the two simulations should be done simultaneously. In other words, they should be solved with the coupled manner. There are many methods or ways for coupling the two simulations. In this review, the authors divided the coupled simulations into two groups. One is the group of which the CFD analysis is the main objective, while the other is the group with network simulation as the main objective. In the latter case, even the major objective is obtained from the results of the network simulation, and the full coupling CFD and network simulation requires an enormous amount of computation and time compared with the single network simulation. The full coupling is practically absurd and is sometimes impossible because of its enormous computation amount. Further simplification of the coupling with CFD has to be pursued. The authors have reviewed the papers published in the recent 10 years on this topic and classified relevant works into the two categories mentioned above.

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On approaches to couple energy simulation and computational fluid dynamics programs

Cited by 233 publications

References 2 publications

Métodos de aplicação da simulação computacional em edifícios naturalmente ventilados no clima quente e úmido

Métodos de aplicação da simulação computacional em edifícios naturalmente ventilados no clima quente e úmido

Roles of building simulation tools in sustainable building design

A Review: Coupled Simulation of CFD and Network Model for Heat and Contaminant Transport in a Building

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