bend_eff: bend efficiency

In AeroSampleR: Estimate Aerosol Particle Collection Through Sample Lines

bend efficiency

Description

In order to run this function, first produce a particle distribution with the 'particle_dist' function, then produce a parameter set with the 'set_params' function. Both of these results must be stored as per examples described in the help set with each.

Usage

bend_eff(df, params, method = "Zhang", bend_angle, bend_radius, elnum)

Arguments

df	is the particle data set (data frame) established with the 'particle_dist' function
params	is the parameter data set for parameters that are not particle size-dependent
method	choice of models: Pui or Zhang. Zhang is the default.
bend_angle	bend angle in degrees
bend_radius	bend radius in m
elnum	element number to provide unique column names

Value

data frame containing original particle distribution with added data for this element

References

Pusheng Zhang, Randy M. Roberts, André Bénard, Computational guidelines and an empirical model for particle deposition in curved pipes using an Eulerian-Lagrangian approach, Journal of Aerosol Science, Volume 53, 2012, Pages 1-20,ISSN 0021-8502, <doi:10.1016/j.jaerosci.2012.05.007>

David Y. H. Pui, Francisco Romay-Novas & Benjamin Y. H. Liu (1987) Experimental Study of Particle Deposition in Bends of Circular Cross Section, Aerosol Science and Technology, 7:3, 301-315, <doi:10.1080/02786828708959166>

Examples

df <- particle_dist() # set up particle distribution
params <- set_params_1("D_tube" = 2.54, "Q_lpm" = 100,
"T_C" = 25, "P_kPa" = 101.325) #example system parameters
df <- set_params_2(df, params) #particle size-dependent parameters
df <- probe_eff(df, params, orient = 'h') #probe orientation - horizontal
df <- bend_eff(df, params, method='Zhang', bend_angle=90,
bend_radius=0.1, elnum=3)
head(df)

AeroSampleR documentation built on Dec. 17, 2025, 5:08 p.m.