کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1896863 1044462 2015 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fisher equation with turbulence in one dimension
ترجمه فارسی عنوان
معادله فیشر با آشفتگی در یک بعد
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات کاربردی
چکیده انگلیسی

As an example of life at high Reynolds number, we investigate the dynamics of the Fisher equation for the spreading of micro-organisms in one dimension subject to both turbulent convection and diffusion. We show that for strong enough turbulence, bacteria, for example, track, in a quasilocalized fashion (with remarkably long persistence times), sinks in the turbulent field. An important consequence is a large reduction in the carrying capacity of the fluid medium. We analytically determine the regimes where this quasi-localized behavior occurs and test our predictions by numerical simulations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica D: Nonlinear Phenomena - Volume 238, Issue 19, 1 October 2009, Pages 2003–2015
نویسندگان
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