Effect of attachment configuration on the trapping efficiency of Vaseline-coated slide catchers for windblown particles |
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Authors: | Mustafa Basaran Gunay Erpul A. Ugur Ozcan Pieter Bogman Wim M. Cornelis Donald Gabriels |
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Affiliation: | 1.Department of Soil Science, Seyrani Faculty of Agriculture,Erciyes University,Kayseri,Turkey;2.Department of Soil Science, Faculty of Agriculture,Ankara University,Ankara,Turkey;3.Department of Soil Management and Soil Care, Faculty of Bioscience Engineering,Ghent University,Ghent,Belgium;4.Department of Forest Engineering, Faculty of Forestry,Karatekin University,?ank?r?,Turkey |
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Abstract: | There are various types of the windblown sediment traps developed for wind tunnel and field studies. One of the main supports expected from these traps is in measuring surface dust concentrations to appropriately derive flux equations. The measurement performance and accuracy of a trap is very important and depends strictly upon the physical characteristics and the behaviors of dust grains with air flows. This paper presents the measurement results of static pressure distribution (SPD) of wind flow around Vaseline-coated slide (VCS) catchers with an aim of finding out whether or not particle trapping efficiency (η) of the VCS is related to the SPD. The SPD was evaluated by a wind reduction coefficient (R c) in a series of wind tunnel experiments with different VCS settings which have different attachment configurations on a pole. Three VCS configurations were considered: a configuration on a circular plastic pole (CPP) and two configurations on wooden square poles (WSP1 and WSP2, respectively). Thus, the primary contribution of this work was to experimentally analyze the effect of the different attachment configurations on the SPD, and the secondary objective was to determine the effect of the SPD on the η. It was shown that spatial correlation and spatial pattern of the R c were different in the surrounding area of each configuration, and ANOVA and DUNCAN tests indicated that η(s) of WSP1, WSP2, and CPP were different at the significant level of P ≤ 0.05 with the mean of 0.94 ± 0.09, 0.63 ± 0.14, and 1.13 ± 0.07, respectively. Additionally, the amount of PM20, PM40, PM60, PM80, and PM100 trapped by the configurations of WSP1, WSP2, and CPP considerably varied depending upon the particular aerodynamic circumstances associated with every configuration. |
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