کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1861080 1530571 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Theory of collisional invariants for the Master kinetic equation
ترجمه فارسی عنوان
نظریه ای از معادلات استثنایی معادلات استثنایی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی


• Statistical treatment of the Boltzmann–Sinai classical dynamical system.
• Investigation of integral conservation properties of the Master kinetic equation.
• Proof of existence of the Boltzmann collisional invariants for the Master equation.
• Proof of existence of new collisional invariants holding for finite-size hard spheres.
• Connection with the Boltzmann equation and physical interpretation are pointed out.

The paper investigates the integral conservation properties of the Master kinetic equation, which provides an exact kinetic statistical description for the Boltzmann–Sinai classical dynamical system. It is proved that, besides the customary Boltzmann collisional invariants, this equation admits also a class of generalized collisional invariants (GCI). The result applies only when the number N and the diameter σ of hard-spheres are finite. This includes the case of dilute gases for which suitable asymptotic ordering conditions hold. However, when the Boltzmann–Grad limit is performed on the Master kinetic equation, it is shown that the existence of GCI is not permitted anymore.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 379, Issues 18–19, 26 June 2015, Pages 1206–1212
نویسندگان
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