I have reviewed the discussions related to drainage modeling in the built-ups and gained an understanding that a sink can be used to remove water from the cavity. To accurately determine the appropriate amount of water to be removed, I followed this specific procedure:
Initially, I conducted a simulation without any drainage and exported the water content [in kg/m³] from the results. Next, I adjusted the water content results by multiplying them by the thickness of the cavity and dividing them by 60, to achieve the water content in [kg/m²s]. Then , I multiplied them to "-1" and saved the file as a text . Finally, I assigned the ".txt" file as the transient input in the sink settings.
While I have observed that the water content of the cavity is 0 during the simulated period and the cavity is being effectively drained, I have some concerns about the acceptability of this procedure and whether it may yield unrealistic results.
p.s.
no convergence failures= 0
balance 1= -3.6
balance 2= -4
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