Incorporation of Numerical Plume Rise Algorithms in the Lagrangian Particle Model LAPMOD and Validation against the Indianapolis and Kincaid Datasets

Abstract

This paper describes the methodology used to incorporate two numerical plume rise algorithms, one by Janicke and Janicke and another by Webster and Thomson, into the Lagrangian particle model LAPMOD. LAPMOD is fully interfaced with the diagnostic meteorological model CALMET, which is part of the widely used CALPUFF modeling system. LAPMOD can also use the meteorological input files produced with the AERMET meteorological processor of the US-EPA recommended model AERMOD. This paper outlines the theory behind the two plume rise algorithms and the details of their implementation in LAPMOD. The paper also provides the results of the evaluation of LAPMOD and its included plume rise algorithms against the well-known Indianapolis and Kincaid SF6 and SO2 field studies and tracer experiments. The performance of LAPMOD is successfully evaluated with the Model Evaluation Kit and compared with that of other air quality models.

A Heuristic Method for Modeling Odor Emissions from Open Roof Rectangular Tanks

“…The LAPMOD modeling system is an open-source Fortran code available at https: //www.enviroware.com/lapmod (accessed on 19 February 2022). The model has been described in [19,20]; the same papers also describe the model validation against two experimental datasets: one in rural terrain (Kincaid) and one in urban terrain (Indianapolis).…”

“…The proposed methodology for estimating the OER from open-roof rectangular tanks is described in the next section. Then, the importance of the tank orientation with respect to the prevailing wind is shown by means of simulations with the Lagrangian particle model LAPMOD [19,20]. The results are finally presented for two different tank orientations and different heights of emitting surface within the tank.…”

Development of the Turbulent Diffusion Model of Fine Suspended Substances in the Lower Atmosphere Layer

“…Some methods for calculating the area of contamination (software packages ANSYS CFX, FLOTRAN, or PHAST DNV) have the difficulty of choosing the initial and boundary conditions, long calculation time, the need for specially certified personnel. All this suggests that it is appropriate to conduct a study on developing a mathematical model of the transport of pollutants in the atmosphere based on numerical modeling [12,13].…”