DUAL RECIPROCITY BOUNDARY ELEMENT METHOD (DRBEM) DENGAN PREDIKTOR-KOREKTOR UNTUK MASALAH INFILTRASI STASIONER PADA SALURAN DENGAN LAPISAN IMPERMEABEL DENGAN ROOT WATER UPTAKE

Irma Novalinda Nasution

Abstract


This study  aims to discussed  about Dual Reciprocity Boundary Element Method (DRBEM) with a predictor-corrector for steady infiltration problems with impermeabel layer with root water uptake in homogeneous soils. Steady infiltration in homogeneous soils is governed by Richard equation. This equation is transformed using a set of transformation including Khirchoff, dimensionless variabels and dimensionless parameters into a type of modified Helmholtz equation. Furthermore with DRBEM, numerical solution of modified Helmholtz equation obtained. The proposed method is tested on problem involved infiltration from rectangular and trapezoidal channels with impermeabel layer with root water uptake.

 Keyword : infiltration, root water uptake, modified Helmholtz equation, Richard equation, DRBEM


References


Batu, V. 1978. Steady Infiltration from Single and Periodic Strip Source. Soil Sci.Soc. Am. J. 42, pp.544-549.

Solekhudin, Imam. 2013. Dual Reciprocity Boundary Element Methods for Water Infiltration Problem In Irrigation. PHD Thesis. National Institut of Education Nanyang Technological University.

Solekhudin, Imam dan Ang, K.C. 2012. A DRBEM with a predictor-corrector scheme for steady infiltration from periodic channels with root-water uptake. Electronic Jurnal of Boundary Element.

Republik Indonesia. 2006. Peraturan Pemerintah Republik Indonesia No. 26 Tentang Irigasi Indonesia.

Vrugt, J.A., 2001a. One-, two-, and three-dimensional root water uptake function for transient modelling. Water Resources Research. Vol. 37. No.10. Pages 2457- 2470.

-------- 2001b. Calibration of a Two-Dimensional Root Water Uptake Model. Water Resources Research. Vol.65.No.4. Pages 1027-1037.




DOI: http://dx.doi.org/10.31604/eksakta.v4i1.19-27

Article Metrics

Abstract view : 3170 times
PDF (Bahasa Indonesia) - 877 times

Refbacks

  • There are currently no refbacks.