The cpu of an analysis device, a fluid analysis and transmits via gear distribution information, the accumulation process, the pitch of a particle layer on the inflow-side inner circumferential surface of a honeycomb structure to a point in time after a short period of time δt (step s130 represent). This leads to the cpu is repeated a fluid analysis taking into consideration the previously derived by means of gear distribution information by, in order in this way by means of gear distribution information is repeated to derive (steps s130 to s150), and then derives distribution information via gear according to the analysis, the accumulation process, the division of the particle layer at a later point in time (step s160 represent).
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