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Numerical simulation of ozone concentration profile and flow characteristics in paddy bulks
Author(s) -
Pandiselvam Ravi,
Chandrasekar Veerapandian,
Thirupathi Venkatachalam
Publication year - 2017
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.4516
Subject(s) - ozone , bin , fumigation , environmental science , diffuser (optics) , flow (mathematics) , environmental engineering , chemistry , atmospheric sciences , meteorology , agronomy , mathematics , mechanics , biology , physics , light source , optics , algorithm
BACKGROUND Ozone has shown the potential to control stored product insect pests. The high reactivity of ozone leads to special problems when it passes though an organic medium such as stored grains. Thus, there is a need for a simulation study to understand the concentration profile and flow characteristics of ozone in stored paddy bulks as a function of time. RESULTS Simulation of ozone concentration through the paddy grain bulks was explained by applying the principle of the law of conservation along with a continuity equation. A higher ozone concentration value was observed at regions near the ozone diffuser whereas a lower concentration value was observed at regions away from the ozone diffuser. The relative error between the experimental and predicted ozone concentration values for the entire bin geometry was less than 42.8%. CONCLUSION The simulation model described a non‐linear change of ozone concentration in stored paddy bulks. Results of this study provide a valuable source for estimating the parameters needed for effectively designing a storage bin for fumigation of paddy grains in a commercial scale continuous‐flow ozone fumigation system. © 2017 Society of Chemical Industry