کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10419799 904421 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Backward simulation of the probability of a trace particle reaching a given region
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Backward simulation of the probability of a trace particle reaching a given region
چکیده انگلیسی
This paper describes the solution of the backward-type Kolmogorov equation (backward method) as an alternative to the forward method to determine the probability (P) of a trace particle reaching a given region within a time τ, which is of interest in groundwater contamination investigation, such as pollution monitoring and controlling. The backward-type Kolmogorov equation describing P was theoretically derived under the assumption that the divergence of the velocity field is zero. We here verify that this assumption is unnecessary and therefore the equation can be used in general cases when various recharge/discharge sources in the flow equation are considered. The backward method is validated by comparing its results with that from the forward method. We find that boundary conditions must be properly imposed in the backward method in order to obtain the same results as from the forward method. The backward method is much more efficient than the forward method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Probabilistic Engineering Mechanics - Volume 20, Issue 1, January 2005, Pages 97-101
نویسندگان
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