89 research outputs found
The role of boundary conditions on the dynamics of green coffee beans in a rotated dryer
[EN] Coffee drying and roasting are usually performed in rotated dryers; therefore, the study of particle dynamics in this equipment is of great relevance to improve their efficiency and hence the quality of the final product. Thus, this work aimed to investigate experimentally and numerically the dynamics of coffee beans in a rotary dryer. The Euler-Euler model was employed to reproduce the particle velocity profile in the rolling regime under different boundary conditions. The results shown that the lower specularity coefficient (0.01), which characterizes the smooth wall and free slip condition, reproduced the bed behavior that most resembled the experimental one. On the other hand, the other coefficients (0.1 and 1.0) showed an increasing deformation in the bed surface, different from the observed experimental behavior. It was also verified that, as the filling degree increases, the bed surface deformation becomes more pronounced.The authors would like to thank FAPEMIG, CNPq and CAPES for the financial resources assigned to carry out this work.Machado, M.; Resende, I.; Lima, R.; Brandão, R.; Pivello, M.; Nascimento, S.; Duarte, C.... (2018). The role of boundary conditions on the dynamics of green coffee beans in a rotated dryer. En IDS 2018. 21st International Drying Symposium Proceedings. Editorial Universitat Politècnica de València. 331-338. https://doi.org/10.4995/IDS2018.2018.7455OCS33133
Thermal gradients of container and mean surface temperature of broiler chicks transported on different shipments
Using data mining to identify factors that influence the degree of leg injuries in broilers
Biomassa radicular da cultura de cana-de-açúcar em sistema convencional e plantio direto com e sem calcário
Enfermidades determinadas pelo princípio radiomimético de Pteridium aquilinum (Polypodiaceae)
Emergência de plântulas de Erythrina velutina em diferentes posições e profundidades de semeadura
IMPACTO DO FLORESTAMENTO COM Pinus taeda L. NA POROSIDADE E PERMEABILIDADE DE UM CAMBISSOLO HÚMICO1
Impacto do manejo dos resíduos da colheita, do preparo do solo e da adubação na produtividade de eucalipto
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