As it is visible from Fig. 1, distribution (10) is platykurtic for a < 0, and leptokurtic for a > 0. Moving on, we shall now consider that exponent a instead of constant, varies according to ...

It was found that, compared to Gaussian roughness, the positively skewed, platykurtic and leptokurtic distribution increased heat transfer by 14.17, 15.50, and 11.22 %, while a marginal increase in ...