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High-Fidelity Visualization of Fire following Earthquake
Earthquakes may induce severe fire disasters in urban regions. Different fire following earthquake (FFE) models have been proposed and developing worldwide. However, the high-fidelity visualization of conflagration in an urban region is rarely mentioned in the existing models. The decision makers in government departments or fire departments are generally not professionals with respect to earthquake engineering. As a result, a high-fidelity visualization of conflagration is more understandable for such nonprofessional users. In this work, a high-fidelity visualization for FFE is presented for the simulation of fire spread and smoke effects, based on the OpenSceneGraph (OSG) 3D graphics toolkit and fire dynamic simulator (FDS) software. Specifically, the development of building burning states and fire spread in the entire region can be clearly shown via changing the color contours of the building, using OSG toolkit. The motions of smoke particles can be directly computed by FDS using the large-eddy simulation, which follows the laws of physics and generates a realistic smoke diffusion. A case study of downtown Taiyuan City with 44,152 buildings is performed. The results show that the FFE scene can be displayed realistically. The proposed high-fidelity visualization can help decision makers understand the overall situation of fire spread area and direction, estimate the sub-regions with high risks of FFE, and make decisions regarding fire rescue and fire protection planning. It can also serve as important technical supports for virtual reality-based fire disaster training.
High-Fidelity Visualization of Fire following Earthquake
Earthquakes may induce severe fire disasters in urban regions. Different fire following earthquake (FFE) models have been proposed and developing worldwide. However, the high-fidelity visualization of conflagration in an urban region is rarely mentioned in the existing models. The decision makers in government departments or fire departments are generally not professionals with respect to earthquake engineering. As a result, a high-fidelity visualization of conflagration is more understandable for such nonprofessional users. In this work, a high-fidelity visualization for FFE is presented for the simulation of fire spread and smoke effects, based on the OpenSceneGraph (OSG) 3D graphics toolkit and fire dynamic simulator (FDS) software. Specifically, the development of building burning states and fire spread in the entire region can be clearly shown via changing the color contours of the building, using OSG toolkit. The motions of smoke particles can be directly computed by FDS using the large-eddy simulation, which follows the laws of physics and generates a realistic smoke diffusion. A case study of downtown Taiyuan City with 44,152 buildings is performed. The results show that the FFE scene can be displayed realistically. The proposed high-fidelity visualization can help decision makers understand the overall situation of fire spread area and direction, estimate the sub-regions with high risks of FFE, and make decisions regarding fire rescue and fire protection planning. It can also serve as important technical supports for virtual reality-based fire disaster training.
High-Fidelity Visualization of Fire following Earthquake
Lu, Xinzheng (author) / Zeng, Xiang (author) / Xu, Zhen (author) / Cheng, Qingle (author)
ASCE International Workshop on Computing in Civil Engineering 2017 ; 2017 ; Seattle, Washington
Computing in Civil Engineering 2017 ; 366-372
2017-06-22
Conference paper
Electronic Resource
English
High-Fidelity Visualization of Fire following Earthquake
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