The irreversibility distributions have been calculated for a circular Couet
te flow of ethylene glycol with temperature dependent thermal conductivity
and viscosity. The approximate series solutions of velocity and temperature
fields are used to obtain the gradients to calculate the spatial entropy g
eneration rate with narrowing gap of the Couette, It was found that the irr
eversibility distribution is relatively more uniform for a narrow-gap Couet
te. (C) 1999 Elsevier Science Ltd.