Hyperbolic axial dispersion model

Abstract

Axial dispersion model is most reliable tool for analyzing the transient response of flow system inside a bundle of pipes. The proposed hyperbolic model considers propagation velocity of flow disturbance to be finite and even of the order of flow velocity to describe flow maldistribution. The traditional parabolic model is included as a special case under the hyperbolic model. Both backmixing and forward flow are considered to model the hyperbolic dispersion equation. This model is proposed for a flow system having multiple pipes with a pulse tracer input. The expressions for system outlet response using residence time distribution have been derived. It will help researchers to determine dispersion coefficient with higher accuracy than the parabolic model.