Determination of Parameters of the Jacobi Room Model Using the Brownian Motion Model

Abstract

Parameters of the Jacobi room model were estimated with simulation of Brownian motion. Deposition on internal room surfaces and attachment of progeny atoms to three modally distributed aerosols were taken into account. The values of parameters were presented as functions of aerosol concentrations. The deposition rate of an unattached progeny was estimated in the range 30-47 h-1; the deposition rate of an attached progeny was very small and its range is 0.0007-0.004 h-1; the attachment rate of a progeny is in range 40-170 h-1. The statistical uncertainty was lower than 1%. The ranges of parameters were similar to those reported in literature.

Deposition rates of unattached and attached radon progeny in room with turbulent airflow and ventilation

“…Recently, Jacobi room parameters were determined using a Brownian motion model (Stevanovic et al, 2009) assuming zero airflow within a room. This assumption is justified when there is no significant air movement in the room, i.e.…”

Relationship between deposition and attachment rates in Jacobi room model

“…Amgarou et al, 2003 0.05e1. 1 Porstendörfer, 1984 0.04 Knutson et al, 1983 0.036e0.072 Stevanovic et al, 2009a 0.005e0.021 Stevanovic et al, 2009b 0.015e0.35 This work 0.012e0.46…”

“…The parameters of the Jacobi room model were determined using a simulation of Brownian motion (Stevanovic et al, 2009a) and assuming zero airflow within a room. Such an assumption is justified when the air motion in the room is weak, i.e.…”

A Computational Fluid Dynamics code for aerosol and decay-product studies in indoor environments

“…In reality, they vary with the ambient conditions. For example, attachment and deposition rate highly depends upon the aerosol concentration and size distribution and extent of turbulence levels [7][8][9][10][11][12]. Moreover, indoor aerosol characteristics could also vary with variation in environmental parameters such as temperature, humidity, turbulence etc.…”