کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10482258 | 933320 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Steady quasi-homogeneous granular gas state
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Using Newtonian molecular dynamics we study a gas of inelastic hard disks subject to shear between two planar parallel thermal walls. The system behaves like a Couette flow and it is tuned to produce a steady state that ideally has uniform temperature, uniform density, no energy flux and a linear velocity profile for restitution coefficient in the wide range: 0.3⩽r⩽1. It is shown that Navier-Stokes-like hydrodynamics fails far from the quasielastic regime. The system shows significant non-Newtonian behavior as non linear viscosity, shear thinning and normal stress differences. Our theoretical description of this state, based on generalized hydrodynamic equations derived from a moment expansion of Boltzmann's equation, agrees reasonably well with the simulational results, and captures the non-Newtonian features of the system. We claim that our hydrodynamic equations constitute a general formalism appropriate for describing different regimes of granular gases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 356, Issue 1, 1 October 2005, Pages 54-60
Journal: Physica A: Statistical Mechanics and its Applications - Volume 356, Issue 1, 1 October 2005, Pages 54-60
نویسندگان
Patricio Cordero, Dino Risso, Rodrigo Soto,