In this paper the parameters of the random model of multivariant vibration for

slugging bed are investigated. A trial-and-error method is proposed to determine the length of gas slugs and particle slugs in the bed. A white noise disturbing function is designated for bottom disturbing forces of the bed

and a normal disturbing function for surface disturbing forces. Model simulations demonstrate a good coincidence with experimental results in expressing dynamic characteristics of vibration structures

frequency spectrum of pressure fluctuations and propagation and attenuation of fluctuations in the bed.