Phosphine distribution and insect mortality in commercial metal shipping containers using wireless sensors and CFD modeling
Ημερομηνία
2021Γλώσσα
en
Λέξη-κλειδί
Επιτομή
In the present work, the distribution of phosphine gas in metal shipping containers was modeled and compared with available data from phosphine sensors. Two different sizes of containers, 20 and 40 ft, were used in the experiments with different doses for each treatment. In each container, sensors were placed to monitor the distribution of phosphine, along with vials with phosphine –susceptible and –resistant insect populations. The insects used in the experiments were the Rhyzopertha dominica (F.) and Oryzaephilus surinamensis (L.), which are two of the most common species found in stored products. A Computational Fluid Dynamic (CFD) model was developed using the OpenFoam software and combined with phosphine sensors for precision fumigation practices. Gas transport and sorption effects of phosphine into empty and filled containers were considered in the CFD model. In light of our findings, in an empty container, the phosphine concentration was approximately similar for all locations, while in the filled container there were noticeable variations inside the fumigated area. Moreover, there was a time delay for phosphine to reach the sensors that were submerged inside the fumigated commodity, at the rear side of the containers. Regarding the simulations, the predictions of the computational model were in accordance with the phosphine concentration as recorded by the sensors. Concerning insect mortality data, in most of the cases, for both species, complete control was noted, regardless of the resistance level of the population tested. These results indicated that the CFD correlated well with the phosphine concentration and insect mortality and thus, a methodology for precision fumigation in containers can be further established. © 2021 Elsevier B.V.
Collections
Related items
Showing items related by title, author, creator and subject.
-
Numerical simulation of pressure-driven displacement of a viscoplastic material by a Newtonian fluid using the lattice Boltzmann method
Swain, P. A. P.; Karapetsas, G.; Matar, O. K.; Sahu, K. C. (2015)The pressure-driven displacement of a non-Newtonian fluid by a Newtonian fluid in a two-dimensional channel is investigated via a multiphase lattice Boltzmann method using a non-ideal gas equation of state well-suited for ... -
Experimental and Numerical Study of Turbulent Flow in Open Channels with Impermeable and Porous Bed
Keramaris E., Pechlivanidis G., Kasiteropoulou D., Michalolias N., Liakopoulos A. (2016)In order to experimentally and numerically investigate turbulent flow in an open channel with porous (vegetated) and impermeable bed 2D Particle Image Velocimetry (PIV) and a Computational Fluid Dynamical (CFD) model were ... -
Effect of micropolar fluid properties on the hydraulic permeability of fibrous biomaterials
Karvelas E.G., Tsiantis A., Papathanasiou T.D. (2020)Background and objective: In this work, the effect of the micropolar fluid parameters on the hydraulic permeability of fibrous biomaterials comprised of square arrays of undirectional fibrils is investigated. Methods: ...