Write True if the statement is correct, otherwise False. The only general way to solve for the view factor of any two object is to use contour integration. Hottel's Crossed String Method cannot be used for two parallel plates separated by a certain distance. All heat transfer mechanisms are governed by temperature gradient. If an object is placed in a vacuum, the only way heat can be transferred is through convection. If a blackbody is enclosing N surface of equal temperatures, the number of view factors is N. Eotvos Number is connected with how one can estimate the regime of flow along ducts. A natural convection can always be made forced, but never can a forced convection be made natural. It can be said that at any regime of flow, the velocity profile of a fluid is less along its thermal boundary layer. In an unbounded boundary layer, thermal boundary layers will only exist when there is a boundary. If the Peclet Number is extremely high, it is safe to say that the flow is turbulent.