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This paper presents an overview of crowd simulation models, their limitations, and an alternative agentbased approch. First we introduce several methods and then we focus on two widely used and validated simulation tools that use grid-based models. We discus the artifacts that these models introduce regarding the way they treat the space and the implication(More)
Improper natural ventilation practices may deteriorate indoor air quality when in close proximity to roadways, although the intention is often to reduce energy consumption. In this study, we employed a CFD-based air quality model to quantify the impact of traffic-related air pollution on the indoor air quality of a naturally ventilated building. Our study(More)
In this paper, we design real-time decentralized and distributed control schemes for Heating Ventilation and Air Conditioning (HVAC) systems in energy efficient buildings. The control schemes balance user comfort and energy saving, and are implemented without measuring or predicting exogenous disturbances. Firstly, we introduce a thermal dynamic model of(More)
This article presents a mathematical model that provides explicit support for preserving the consistency between decisions made at various points during building performance analysis. Analytical Target Cascading, a multilevel engineering design optimization framework, is applied to the energy analysis process. Within this framework, the energy analysis(More)
Making a prediction typically involves dealing with uncertainties. The application of uncertainty analysis to buildings and HVAC (heating, ventilation and air conditioning) systems, however, remains limited. Most existing studies concentrate on the parameter uncertainty and parametric variability in building simulations for the design stage, and rely on(More)
Though researchers in computer graphics have started to use the GPGPU (General Purposed Graphics Processing Unit) method to speed up their procedural programs, these techniques are seldom used in the building simulation field. It is possible to apply the GPGPU method to many simulation scenarios (i.e. human evacuation, shadow simulation) to speed up(More)
The Design Analysis Integration (DAI)-Initiative aims to steer towards new solutions for design analysis integration. These solutions should be able to overcome the limitations of current interoperability approaches that assume the existence of generic and static interfaces in a ‘perfect world’ in which all information is structured and all mappings between(More)
We present an interactive gesture recognition-based, immersive augmented reality system visualizing computational fluid dynamics (CFD) datasets of indoor environments. CFD simulation is used to predict the indoor environments and assess their response to specific internal and external conditions. To enable efficient visualization of CFD datasets in(More)