Determine all the view factor for a duct of equilateral triangular cross section. Assume that all surfaces are plane.?
The equilateral triangular duct was first examined by Han and Cooper. They embraced Langhaar’s linearization technique and von Kármán's integral procedure to arrive at the solution. The outcomes were presented in tabular and graphical forms. The analysis forecasted somewhat extra rapid flow development than foreseen by other investigators. Therefore, Han and Cooper obtained K(∞) as 2.382; a value considerably higher than 1.69.