The discussion revolves around the concepts of wave drag and fluid resistance, particularly in the context of submerged and partially submerged bodies, such as boats and submarines.
Some participants have provided insights into the differences between wave drag and skin friction, suggesting that a fully submerged body experiences different drag characteristics compared to a partially submerged one. The conversation remains open with various interpretations being discussed.
There is an ongoing examination of the terms and their implications, with references to specific equations and principles such as Stoke's equation, indicating a need for clarity on the subject matter.
FredGarvin said:I haven't heard of that specific term. They may be referring to the effects of a wave and it's interactions with the surfaces of two fluids, i.e. Froude Number and boat hull drag calculations.
FredGarvin said:Skin friction and wave drag are not the same thing. You will always have skin friction no matter what you do. That is due to the interaction of the fluid with the surface of the hull. Wave drag is due to the energy lost to make a wave.