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Chimera Technologies, Inc.
15051 Zodiac St. NE
Forest Lake, MN , USA 55025
Particle Size Distribution
The FPM solves for the spatial and temporal evolution of the particle size
distribution, which is represented as a multimodal distribution, where each
mode represents a distinct population of particles originating from a distinct
source. For example, the figure below shows a trimodal particle size
distribution measured near a road. The smallest mode represents combustion
particles emitted from vehicles, the middle mode represents background
particles blowing over the road, and the largest mode represents dirt and tire
particles. The FPM uses a single lognormal function to represent the size
distribution within each mode. Lognormal distribution functions represent
complex size distributions with a minimum of FLUENT scalars, thus permitting
computationally efficient simulations. The output of the FPM is the size
distribution parameters (e.g., mean size and standard deviation) at each point
of interest in the simulation domain.