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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Print: 2152-5102
ISSN Online: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v39.i2.50
pages 149-159

Applicability of the Forchheimer Equation to Forced-Aeration Windrow Composting: Variation of Airflow Characteristics with Humidity and Volatile Solids

Pedro Almeida
Faculty of Science and Technology, New University of Lisbon Caparica, Portugal
Ana Silveira
Faculty of Science and Technology, New University of Lisbon Caparica, Portugal
Antonio Ferreira Miguel
Department of Physics, School of Sciences and Technology, University of Evora, Institute of Earth Sciences (ICT) Pole of Evora, Portugal

ABSTRACT

This paper reports on experimental and analytical research in the field of forced-aeration windrow composting. The adequacy of a non-Darcy flow equation to describe flows through organic porous media is discussed. The windrow permeability and inertial parameter are determined and related with the substrate moisture and volatile solids contents. Another aspect studied is the transient variation of airflow characteristics and compost density. Comparisons between the analytical model and measurements are also made.