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This article in SSSAJ

  1. Vol. 74 No. 1, p. 33-37
     
    Received: Jan 16, 2009


    * Corresponding author(s): josh_heitman@ncsu.edu
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doi:10.2136/sssaj2009.0022

Predicting Saturated Hydraulic Conductivity of Golf Course Sands from Particle-Size Distribution

  1. Lalit M. Aryaa,
  2. J.L. Heitman *b,
  3. B.B. Thapac and
  4. D.C. Bowmanc
  1. a Oceanside, CA
    b Soil Science Dep., North Carolina State Univ., Raleigh, NC 27601
    c Crop Science Dep., NC State Univ., Raleigh, NC 27601

Abstract

This research developed a model of saturated hydraulic conductivity for golf course and athletic field media. The model was developed from saturated flow data in packed sand cores, for which a pore-size distribution was derived from particle-size distribution, bulk density, and measured soil water characteristic data. The pores were first assumed to form an idealized structure, consisting of non-tortuous capillary tubes of uniform shape and size, and the Hagen–Poiseuille flow equation was applied to compute idealized saturated flow. The idealized saturated flows were compared with saturated flows derived from the measured saturated hydraulic conductivity data. Subsequently, an empirical relationship was established between the two in the form: Q t(m) = c + dQ t(h–p), where Q t(m) is the saturated flow through the natural-structure sand cores and Q t(–p) is the saturated flow through the idealized pore structure for the same core. In our study, parameters c and d had values of −1.675 and 0.308, respectively, and the r 2 of the regression had a value of 0.871. The model was applied to 14 golf course sands and produced excellent results with minor anomalies.

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