Abstract
The article describes mathematical simulation of flowing air through porous zone and water vaporisation from mentioned porous area which actually represents dried fibrous material - cotton towel. Simulation is based on finite volume method. Wet towel is placed in pipe and hot air flow through the towel. Water from towel is evaporated. Simulation of airflow through porous element is described first. Eulerian multiphase model is then used for simulation of water vaporisation from porous medium. Results of simulation are compared with experiment. Ansys Fluent 13.0 was used for calculation.
Highlights
Drying process is used in wide range of industrial application
The mathematical model of wet linen is achieved by patching liquid phase into porous zone
The simulation based on finite volume method can be complemented by evaporation model in Ansys Fluent so liquid phase is evaporated from porous zone and drying process is simulated
Summary
Drying process is used in wide range of industrial application. Drying of textile is mainly used in commercial laundries, hotels etc. Mass flow of hot air through textile can be interpreted as flow through porous zone. The mathematical modelling is a very good way how to simulate airflow through the porous medium. The mathematical model of wet linen is achieved by patching liquid phase into porous zone. The simulation based on finite volume method can be complemented by evaporation model in Ansys Fluent so liquid phase is evaporated from porous zone and drying process is simulated. The group of authors refers about simulation of drying process realized in industry. The example of simulation process of drying is the drying of soybean [5], spraying and evaporation of particles into hot airflow [6], vacuum drying of wood [7] or drying of the iron ore pellets [8]. Mathematical modelling of multiphase flow with phase change in energy facilities is refered [9]
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