Conceptual modeling of contaminated solute transport based on stream tube model
- Conceptual modeling of contaminated solute transport based on stream tube model
- 정승건; 이순재; 김동주; 이상협; 최재우
- Conceptual modeling; Solute transport; Pure convective flow; Stream tube model; Travel time distribution
- Issue Date
- Advances in Chemical Engineering and Science
- VOL 2, NO 4, 481-489
- In this study, we performed a conceptual modeling on solute transport based on theoretical stream tube model (STM) with various travel time distributions assuming a pure convective flow through each tube in order to investigate how the lengths and distributions of solute travel time through STM affect the breakthrough curves at the end mixing surface. The conceptual modeling revealed that 1) the shape of breakthrough curve (BTC) at the mixing surface was determined by not only input travel time distributions but also solute injection mode such as sampling time and pulse lengths, 2) the increase of pulse length resulted in the linear increase of the first time moment (mean travel time) and quadratic in-crease of the second time moment (variance of travel time) leading to more spreading of solute, however, the second time moment was not affected by travel time distributions, and 3) for a given input distributions the increase in travel distance resulted in more dispersion with the quadratic increase of travel time variance. This indicates that stream tube model obeying strictly pure convective flow follows the concept of convective-lognormal transport (CLT) model re-gardless the input travel time distributions.
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