TY - JOUR
T1 - Towards a new method for experimental determination of aerosol sampler aspiration efficiency in small wind tunnels
AU - Ramachandran, Gurumurthy
AU - Sreenath, Avula
AU - Vincent, James H.
PY - 1998/8/1
Y1 - 1998/8/1
N2 - To test the performance of aerosol samplers, a new method is proposed which uses scaling relationships and existing empirical equations for aspiration efficiency. The method may be used to prescribe experimental conditions and small-scale sampler designs that can be tested in small wind tunnels that are physically equivalent to testing full-scale samplers in large wind tunnels. The basic assumptions which underlie the measurement of aerosol sampler performance and the quantitative effects of errors arising from spatial and temporal non-uniformities in aerosol distributions are examined. Aspiration efficiency is strongly dependent on the spatial distributions of air velocity and particle concentration far upstream of the sampler.
AB - To test the performance of aerosol samplers, a new method is proposed which uses scaling relationships and existing empirical equations for aspiration efficiency. The method may be used to prescribe experimental conditions and small-scale sampler designs that can be tested in small wind tunnels that are physically equivalent to testing full-scale samplers in large wind tunnels. The basic assumptions which underlie the measurement of aerosol sampler performance and the quantitative effects of errors arising from spatial and temporal non-uniformities in aerosol distributions are examined. Aspiration efficiency is strongly dependent on the spatial distributions of air velocity and particle concentration far upstream of the sampler.
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U2 - 10.1016/S0021-8502(97)10027-1
DO - 10.1016/S0021-8502(97)10027-1
M3 - Article
AN - SCOPUS:0032146485
SN - 0021-8502
VL - 29
SP - 875
EP - 891
JO - Journal of Aerosol Science
JF - Journal of Aerosol Science
IS - 7
ER -