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Author: search.filters.author.Pongnoo, NattawootSubject: search.filters.subject.Marine shrimp aquaculture farm

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    Item type:Publication,
    A numerical treatment of a couple mathematical models of ground water flow in rice field near marine shrimp aquaculture farm
    (2012-02-08)
    Pongnoo, Nattawoot
    ;
    Pochai, Nopparat
    The high level salinity in soil is a main problem of a plant grows less in rice field near marine shrimp aquaculture farm. The salinity in soil and ground water flow are required for soil quality assessments. The modeling often involves numerical methods to solve the equations. In this research, two mathematical models are used to simulate the salinity in the ground with varied flow velocity. The first is a potential flow model that provides the velocity field of the ground water flow. The second is a dispersion model, where the commonly used governing factor is the two-dimensional dispersion equation that gives the salinity fields. In the simulation process, we used the finite difference method for the both models. Finally, we present a numerical simulation that confirms the results of the technique.
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    A Numerical computation of non-dimensional form of a mathematical model of soil salinity profile in a rice field near marine shrimp aquaculture farm
    (2011-04-08)
    Pongnoo, Nattawoot
    ;
    Pochai, Nopparat
    The high level salinity of soil is a main problem of a plant grows less in rice field near marine shrimp aquaculture farm. The electrical conductivity of soil is an indicator of soil salinity assessment. The methods to detect the amount of salinity of soil are field measurement and mathematical simulation. In this paper, the direct current model of electric conductivity of soil is used. The Lax-Wendroff method is used to approximate the conductivity of soil in the area near marine shrimp aquaculture farm.