کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4575847 | 1629565 | 2006 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Estimating relative hydraulic conductivity from lognormally distributed particle-size data
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
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چکیده انگلیسی
We present a simple model to estimate relative hydraulic conductivity (RHC) of unsaturated soils directly from lognormally distributed particle-size data. It is based on the model that estimates the water retention characteristic (WRC) from lognormally distributed particle-size data. The proposed model allows us to estimate the RHC from the particle-size distribution (PSD) data alone, providing a physically based link among the PSD, the WRC, and the RHC. We tested the proposed model against different soil types and found, for soils with a strong lognormal PSD or for well-graded soils, that its performance is generally similar to that of the traditional Mualem-based models that estimate the RHC from the WRC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geoderma - Volume 133, Issues 3–4, August 2006, Pages 421–430
Journal: Geoderma - Volume 133, Issues 3–4, August 2006, Pages 421–430
نویسندگان
Sang Il Hwang, Sang Pyo Hong,