In order to forecast the possibilities of snow accretion on aerial wires, we studied its macroscopic physical mechanism and developed a computer simulation model. We considered aerological temperature in addition to temperature on the ground to assume liquid water content of snowflakes. For calculating cylindrical-sleeve snow growth more adequately, we introduce the following facts to the model, (1) wind speed and its direction were usually unsteady, (2) wind would not necessarily cross wires at right angle, and (3) wires had some snow accretion resistance. We got some sufficient results of the simulated cylindrical-sleeve snow weights between 1/3 and 3 times of the observed weights.
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