Entropy generation number is mathematically expressed as: 

Explanation:-

• The entropy generation number, denoted as N_s, is a dimensionless quantity that describes the irreversibility of a thermodynamic process. It is mathematically expressed as:

⇒ \(N_s = \frac{dS_{gen}}{\delta S_{rev}}\;\)

equal to the ratio of actualgeneration rate to a characteristic entropy transfer rate. equal to the ratio of actualgeneration rate to a characteristic entropy transfer rate. It is equal to the ratio of the actual generation rate to a characteristic entropy transfer rate. It can also be expressed as,

\(⇒ N_s = \frac{S_{gen}}{m.C_p}\;\)