Lr. Collins et S. Sundaram, COMMENT ON PARTICLE COLLISION RATE IN FLUID-FLOWS [PHYS. FLUIDS 10, 1028 (1998)], Physics of fluids (1994), 10(12), 1998, pp. 3247-3248
In the publication by Hu and Mei [Phys. Fluids 10, 1028 (1998)] a corr
ection to the collision formula is described for like particles within
a given size category. Here we show that the formula derived by Sunda
ram and Collins (1997) is already consistent with Hu and Mei (1998) an
d so their correction does not apply. (C) 1998 American Institute of P
hysics. [S1070-6631(98)02512-4].