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Research articles

ScienceAsia 41(2015): 414-422 |doi: 10.2306/scienceasia1513-1874.2015.41.414

Diffusion modelling on a dynamically adaptive tree grid for rainfall overland flow simulation

Anurak Busamana,b,*, Khamron Mekchaya, Suchada Siripanta, Somporn Chuai-Areeb

ABSTRACT:     In this study a numerical algorithm is developed for simulation and visualization of rainfall overland flows on natural topography. The algorithm is constructed based on the diffusion model of water flow which is solved numerically using an adaptive tree grid finite volume method which is equipped with dynamic domain defining. The developed algorithm is tested to simulate and visualize rainfall overland flows on natural topography showing the advantages of the algorithm in terms of computational costs and the simulation times without losing much accuracy in the results.

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a Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330 Thailand
b Department of Mathematics and Computer Science Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani 94000 Thailand

* Corresponding author, E-mail: anulove108@hotmail.com

Received 29 May 2015, Accepted 18 Nov 2015