کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4616910 | 1339363 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The large-time energy concentration in solutions to the Navier-Stokes equations with nonzero external forces
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
آنالیز ریاضی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The large-time energy concentration in solutions to the Navier-Stokes equations with nonzero external forces The large-time energy concentration in solutions to the Navier-Stokes equations with nonzero external forces](/preview/png/4616910.png)
چکیده انگلیسی
It is known that the turbulent solutions to the unforced Navier-Stokes equations exhibit a large-time energy concentration in the frequency space. If we suppose the existence of a nonzero time dependent external force fâL1((0,â);LÏ2) in the equations, the situation is more complicated. It is possible to construct simple examples of solutions, in which the energy is asymptotically distributed over the entire spectrum of the Stokes operator. Further, we will show as the main result of this paper that there still exist wide classes of initial conditions and external forces yielding solutions with the large-time energy concentration analogical to the situation in the unforced Navier-Stokes equations. We will also show that the frequency spectrum of the solution does not generally relate to the frequency spectrum of the external force.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Mathematical Analysis and Applications - Volume 402, Issue 1, 1 June 2013, Pages 147-156
Journal: Journal of Mathematical Analysis and Applications - Volume 402, Issue 1, 1 June 2013, Pages 147-156
نویسندگان
ZdenÄk Skalák,