کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8051131 | 1519371 | 2018 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Macroscopic and microscopic anomalous diffusion in comb model with fractional dual-phase-lag model
ترجمه فارسی عنوان
انتشار بیومارکروبیک و میکروسکوپیک در مدل شانه با مدل کسری دوگانه فاز
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کلمات کلیدی
انتشار ناهموار، مدل ترکیبی مشتق مکرر، معادله پایه، پارامتر آرامش بخش،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
چکیده انگلیسی
A novel constitutive equation which considers the macroscopic and microscopic relaxation characteristics and the memory and nonlocal characteristics is proposed to describe the anomalous diffusion in comb model. Formulated governing equation with the fractional derivative of order 1â¯+â¯Î± corresponds to a diffusion-wave one and solutions are obtained analytically with the Laplace and Fourier transforms. As the solutions show, the existence of macroscopic relaxation parameter makes the expression of mean square displacement contain an integral form and the specific value for the microscopic relaxation parameter and macroscopic one changes the coefficient of fractional integral. The particle distribution and mean square displacement of Fick's model and the dual-phase-lag model are same at the short and long time behaviors and the special case of equal macroscopic and microscopic relaxation parameters. The particle distributions and mean square displacement with the effects of different parameters are presented graphically. Results show that the wave characteristic becomes stronger for a larger α, a larger Ïq or a smaller ÏP. For mean square displacement, the magnitude is larger at the short time behavior and smaller at the long time behavior for a smaller α. Besides, for a smaller Ïq or a larger ÏP, the magnitude is larger.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Mathematical Modelling - Volume 62, October 2018, Pages 629-637
Journal: Applied Mathematical Modelling - Volume 62, October 2018, Pages 629-637
نویسندگان
Liu Lin, Zheng Liancun, Chen Yanping,