Method for simulating processing state of belt-shaped body

When a state in which a belt-shaped body (W) is transported and processed in a furnace (10) is detected, a transport path for transporting the belt-shaped body in the furnace is set, and a processing condition for transporting the belt-shaped body along the transport path and processing the belt-shaped body in the furnace is set. A high-viscosity fluid having the same characteristics as the belt-shaped body is considered to flow along the conveyance path at the same speed as the belt-shaped body and is subjected to fluid analysis, and the processing state of the belt-shaped body conveyed in the furnace is simulated. 在检测带状体(W)在炉(10)内被搬运和处理的状态时，设定在炉内搬运带状体的搬运路径，并且设定沿着搬运路径搬运带状体并在炉内进行处理的处理条件，将具有与带状体相同特性的高粘度流体视为以与带状体相同的速度沿着搬运路径流动并进行流体分析，模拟在炉内搬运的带状体的处理状态。