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The document discusses the dimensional and dimensionless momentum equations presented in a paper by Nawaz et al. The equations describe fluid flows in boundary layers. The document highlights the differences between the dimensional equation and the dimensionless equations, particularly in terms of the time derivative. It points out that the fractional parameter is absent in the dimensional equation, suggesting that the two terms are not compatible. The given text discusses the compatibility between the dimensional and dimensionless equations for fluid flow. It also identifies errors in equations presented in a study by Nawaz et al., including terms with different units and incorrect values of alpha. The authors of the study declare no conflicts of interest. [Extracted from the article]

There is no correct form of the term HT ht in the literature. In Physics it is not allowed to add quantities with different units and the term HT ht is wrong. [Extracted from the article]

Some errors exist in the above paper. [ABSTRACT FROM AUTHOR]

The equations studied in the above paper are dimensionally incorrect. [ABSTRACT FROM AUTHOR]

The present comment concerns some doubtful results included in the above paper. [ABSTRACT FROM AUTHOR]

The present note presents some errors in the aforementioned paper published in Mathematical Methods in the Applied Sciences. Two errors are found in the definition of the non-dimensional parameters and correct results are presented for temperature profiles included in figure 10 of the previous paper. [ABSTRACT FROM AUTHOR]

However, the stream function is dimensional with units HT ht . The correct form is as follows: 4 HT ht Equation (4) is in agreement with equation 50 included in the NACA report 3971 (Rossow2). [Extracted from the article]

The present comment concerns some doubtful results included in the above paper. [ABSTRACT FROM AUTHOR]

The author comments on an article regarding a study on an incompressible steady two-dimensional forced convection with magnetic hydrodynamic (MHD) second-grade non-Newtonian fluid flow.