Visual Simulation of Heat Shimmering and Mirage

We provide a physically-based framework for simulating the natural phenomena related to heat interaction between objects and the surrounding air. We introduce a heat transfer model between the heat source objects and the ambient flow environment, which includes conduction, convection, and radiation....

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Bibliographic Details
Published in:IEEE transactions on visualization and computer graphics 2007-01, Vol.13 (1), p.179-189
Main Authors: Zhao, Y., Han, Y., Fan, Z., Qiu, F., Kuo, Y.-C., Kaufman, A.E., Mueller, K.
Format: Article
Language:English
Subjects:
Acceleration
Advection-diffusion equation
Algorithms
Computation
Computational modeling
Computer Graphics
Computer Simulation
Conduction heating
Difference equations
Finite difference methods
GPU acceleration
heat shimmering
Heat transfer
Hot Temperature
Image Enhancement - methods
Image Interpretation, Computer-Assisted - methods
Imaging, Three-Dimensional - methods
Information Storage and Retrieval - methods
Lattice Boltzmann methods
lattice Boltzmann model
mirage
Models, Theoretical
Nonlinear equations
nonlinear ray tracing
Optical Illusions
Ray tracing
Rendering
Rendering (computer graphics)
Reproducibility of Results
Sensitivity and Specificity
Surface layer
Temperature distribution
Texture
thermal flow dynamics
Thermodynamics
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Summary:We provide a physically-based framework for simulating the natural phenomena related to heat interaction between objects and the surrounding air. We introduce a heat transfer model between the heat source objects and the ambient flow environment, which includes conduction, convection, and radiation. The heat distribution of the objects is represented by a novel temperature texture. We simulate the thermal flow dynamics that models the air flow interacting with the heat by a hybrid thermal lattice Boltzmann model (HTLBM). The computational approach couples a multiple-relaxation-time LBM (MRTLBM) with a finite difference discretization of a standard advection-diffusion equation for temperature. In heat shimmering and mirage, the changes in the index of refraction of the surrounding air are attributed to temperature variation. A nonlinear ray tracing method is used for rendering. Interactive performance is achieved by accelerating the computation of both the MRTLBM and the heat transfer, as well as the rendering on contemporary graphics hardware (GPU)
ISSN:1077-2626
1941-0506
DOI:10.1109/TVCG.2007.24