The statement Nu number equation for a forced convection flow over an elliptical cross sectional body is Nu=0.257 Re0.731 Pr 1/3 is: B. False.
What is Nu number equation?
The conventional version of the Nusselt number equation for forced convection over an elliptical body differs from this equation.
Aspect ratio (a/b) of the ellipse, where 'a' is the major axis and 'b' is the minor axis, Reynolds number (Re), Prandtl number (Pr), and other parameters determine the right equation for the Nusselt number for forced convection over an elliptical cross-sectional body. The particular configuration and flow conditions will determine the precise equation.
Therefore the correct option is B.