Work

Analysis of Temperature-Field Error of Computational Fluid Dynamics (CFD) in a New Type of Cigar-Curing Shed

Year: 2024

Type: article

Abstract: Computational fluid dynamics (CFD) offers a powerful tool for simulating the temperature field within an object and it is widely being used in studies related to tobacco curing. However, there remains a discrepancy between the simulated temperature values and the actual monitoring data. To quantitatively understand temperature simulation errors for a CFD model of a novel cigar-curing shed, the temperature within the cigar-curing area was simulated and errors were calculated. This model produced a relative error between −5% and 4%. The upper monitoring surface of the cigar-curing rack exhibited insignificant errors between 0:00–9:00 and 18:00–24:00 (maximum at 10:00–17:00). The distribution area was relatively disordered, and the negative-error area increased sharply. Furthermore, the simulation performance for the upper monitoring surface was superior to that for the lower surface, particularly at night. The worst results were realized in the lower monitoring surface at 11:00–18:00. The ambient temperature influences the temperature uniformity inside the shed, and a greater surface temperature dispersion led to larger simulation errors. CFD modeling errors are mainly responsible for these differences and offer a primary optimization direction. These errors can be reduced by using correction values. This study offers valuable insights for improving the effectiveness of CFD simulations of drying temperatures, thereby achieving a comprehensive and accurate understanding of the novel drying shed's performance.

Source: Journal of Agriculture and Forestry

DOI: 10.57237/j.jaf.2024.03.002