Comparison of infiltration models with regard to design of rectangular infiltration trenches |
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Authors: | Ryszard Błażejewski Jakub Nieć Sadżide Murat-Błażejewska Paweł Zawadzki |
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Affiliation: | 1. Department of Hydraulic and Sanitary Engineering, University of Life Sciences, Poznań, Polandrblaz@up.poznan.pl;3. Department of Hydraulic and Sanitary Engineering, University of Life Sciences, Poznań, Poland;4. Institute of Land Improvement, Environmental Development and Geodesy, Poznań, Poland |
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Abstract: | ABSTRACTGuidelines for the design of infiltration trenches of rectangular cross-section are compared. Four concepts of infiltration into a native soil from linear soakaways of rectangular cross-section are discussed. The results of calculations using analytical equations are compared with numerical two-dimensional (2D) simulations using HYDRUS computer code and field measurements. Satisfactory agreement is achieved for Kozeny’s concept of infiltration and the free-surface approach, applied to a trench in a highly saturated sandy loam. Theoretical solutions, neglecting matric potential, suggest that the mean infiltration rate along the wetted perimeter of a rectangular trench varies in the range 1.0 to 1.5 of the value of saturated hydraulic conductivity. |
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Keywords: | infiltration trench HYDRUS storm water management soakaway storm water |
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