Initial temperature of wall surfaces

[Zohra-D]

Hello, I want to simulate a one zone model with one wall. I defined initial temperature for the zone and for the wall. In the simulation results, I noticed that the initial temperature of the wall surfaces does not match what I defined. It shows something close to the zone temperature for the inner surface and to the outside temperature for the outer surface. Could you explain how is the defined initial temperature of the wall taken into account ? How is the initial temperature of the wall surfaces determined ? Is there a document where I can get more information about the models used in the library?