Final answer:
It's unclear what 'whitecaps' refers to in the context of Fire Dynamics Simulation, but if it's related to visible simulation artifacts, it would not be a specific function but a part of visualization. More context is needed to provide a precise answer.
Step-by-step explanation:
The term whitecaps does not directly relate to any known function in the field of Fire Dynamics Simulation (FDS), which is a field dealing with computational fluid dynamics models that simulate fire-driven fluid flow.
Therefore, to provide an accurate answer to your question, we should clarify the context in which whitecaps are being referred to. If by whitecaps you mean a visible feature in a simulation that resembles the frothy peaks found on waves, this could be an artifact or a part of the visualization of turbulence within a simulation, not an intentional function or component.
However, if we're discussing a specific software or a concept within FDS or a related domain that I am not aware of, then it would be beneficial to have more information to provide a proper explanation.
Yet, it's worth noting that in FDS, detailed functions and outputs are designed to replicate the physical characteristics and behavior of real-life fire scenarios for analysis, safety planning, or engineering purposes.