کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6919311 863682 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effects of spatial sampling on random noise for gyrokinetic PIC simulations in real space
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
The effects of spatial sampling on random noise for gyrokinetic PIC simulations in real space
چکیده انگلیسی
We study the effects of cloud-in-cell sampling and gyroaveraging on random noise in real space (as opposed to the common Fourier space presentation), and show that together, these can reduce the noise by a factor of 3 compared to nearest grid point sampling without gyroaveraging. Hence an order of magnitude less test particles are needed for the given noise level. We derive equations for noise level as a function of Larmor radius and also investigate the effect of gyroaveraging on noise in local gradients. The effect of number of gyropoints on noise is also discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Physics Communications - Volume 203, June 2016, Pages 162-167
نویسندگان
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