کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1899767 1045140 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A nonequilibrium temperature and fluctuation theorem for soft-mode turbulence
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات کاربردی
پیش نمایش صفحه اول مقاله
A nonequilibrium temperature and fluctuation theorem for soft-mode turbulence
چکیده انگلیسی

Non-thermal Brownian motion of a particle for soft-mode turbulence (SMT) in the electroconvection of a nematic liquid crystal has been experimentally investigated to clarify the statistical and thermodynamical aspects of SMT, using the Lagrangian picture in hydrodynamics. The effective temperature for SMT is obtained in two different ways based on the Einstein relation and the fluctuation theorem from the diffusion due to non-thermal particle fluctuations. The temperatures from the two methods agree well and exhibit a high value of 106 K. They depend on the coarse-graining time, which reflects the anomalous properties of the macroscopic fluctuations for the SMT.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica D: Nonlinear Phenomena - Volume 239, Issue 11, 1 June 2010, Pages 735–738
نویسندگان
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