1976 Volume 2 Issue 4 Pages 336-340
To examine the error in measuring particle concentration due to anisokinetic sampling over a wide range of inertial parameters, theoretical and experimental studies have been conducted using methyleneblue-uranine aerosol generated by a spinning disk and lycopodium spores in the small and large inertial regions respectively. Theoretical results obtained under the assumption of potential flow are in good agreement with experimental data, and estimation of anisokinetic sampling errors may be possible. It is also recognized that concentration error becomes smaller as the sampling velocity becomes extremely high. The amount of particles deposited in the probe is also examined and interesting results are obtained such as the fact that the deposit shows the minimum value at Reynolds numbers from 2, 000 to 3, 000 and that the amount of particles deposited in an acrylic probe is larger than in a brass one.