On the other hand, the equality of the Froude number requires N 10 (9.18) Which is conflicting with the previous requirement for the equality of the reynolds number. Therefore, it is impossible to satisfy the requirement of the dynamic similarity unless you use different fluid systems fp fm and p unto satisfy eqs. 8. 14)and( 8.15),the following relationship must hold m31.6p (9.19)On the other hand, the equality of the Froude number requires = (9.18) Which is conflicting with the previous requirement for the equality of the Reynolds number. Therefore, it is impossible to satisfy the requirement of the dynamic similarity unless you use different fluid systems. Ifρp ρm and μp μm, to satisfy Eqs.(8.14) and (8.15), the following relationship must hold. = (9.19) NP Nm 10 1   m ( )   P ( ) 31.6 1  