DUAL RECIPROCITY BOUNDARY ELEMENT METHODS (DRBEM) PADA MASALAH INFILTRASI STASIONER DARI SALURAN IRIGASI TUNGGAL BENTUK TRAPESIUM

Munadi Munadi, Imam Solekhudin, Sumardi Sumardi, Atok Zulijanto

Abstract


Dalam makalah ini dibahas masalah infiltrasi dari saluran tunggal bentuk trapesium. Persamaan pengatur masalah ini adalah persamaan Richard. Persamaan tersebut dapat dipelajari lebih mudah dengan mentransformasikannya menjadi persamaan Helmholtz termodifikasi. Dalam penelitian ini, Dual Reciprocity Boundary Element Methods (DRBEM) digunakan untuk memecahkan persamaan Helmholtz termodifikasi secara numerik. Dengan menggunakan solusi yang diperoleh, nilai numerik dari potensial fluks matrik kemudian dihitung. Metode tersebut diterapkan pada masalah infiltrasi stasioner dalam tanah homogen dari saluran tunggal bentuk trapesium berlapisan kedap air dan yang tidak berlapisan kedap air. Solusi numerik yang diperoleh dari kedua saluran kemudian dibandingkan.

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