1. Introduction
Individual ohmic and microwave heating techniques can heattreat
various foods during a short time depending upon their electrical
conductivities and relative permittivities, respectively.
However, under-processed foods could increase microbiological
risks. On the other hand, over-processed foods may cause serious
nutritional losses and reduce down sensory values. Uniform heating
of particulate foods is a serious challenge because individual
solids and liquids are so discrepant in terms of thermal, electrical,
and dielectric properties. To achieve the challengeable uniformity
in heating of particulate foods, a new cylindrical microwave chamber
equipped with an ohmic tube was designed and fabricated for
testing in a continuous flow mode. Over the past few decades,
there have been many studies using numerical methods to validate
continuous flow microwave and ohmic heaters. Prediction of thermal
behavior of solids or liquid inside the heat exchanging units,
along with the dynamic flow patterns is crucial for system
optimization and validation. In general, simulation for microwave
heating is more complicated than ohmic heating since the
numerical approach permits hyperbolic partial differential