บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Considerations to continue the research in the precooling’s area of numerical simulation of agriculture products in FEAGRI / UNICAMP.

Amendola M., Pirozzi D.C.Z.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.71

2004

บทคัดย่อ

Considerations to continue the research in the precooling’s area of numerical simulation of agriculture products in FEAGRI / UNICAMP. This work intends to discuss the arguments that lead to the implementation choice of two types of finite difference methods: explicit and implicit, in research with numerical simulation of physical process.Therefore, it was take the example of the strawberry pre-cooling numerical simulation, because it was the first research in FEAGRI/UNICAMP, where was used this methodology to develop studies in the are of agricultural engineering process.In this case, it was considered the unidimensional mathematical model, based o­n Fourier’s law, in spherical coordinates, and the initial and bored conditions was based o­n specific experiment realized previously.

Observing the theoretical advantage and disadvantage – as it consists in the apply of mathematical bibliographic reference – it is evidenced that the explicit method is slower than implicit, because the first method needs to be executed satisfying the stability criterion.However, in view of that in this type of process, both the methods produces results with the same accuracy in seconds, and considering that the implicit method implementation is avoid for the most part of the beginners researchers, to judge it very complex, it can be suggested, for the continuity of to research using explicit method, mainly if allied with a bidimensional model, what already have been developed.