مشخصات پژوهش

عنوان	Assessing the Efficacy of a GPU-Based MW-FDTD Method for Calculating Lightning Electromagnetic Fields Over Large-Scale Terrains
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Finite difference methods , Time-domain analysis , Lightning , Electromagnetic fields , Graphics processing units , Memory management , Electromagnetic compatibility
چکیده	This article presents for the first time an OpenACC (Open accelerators)-aided Graphics Processing Unit (GPU)-based approach adopting a 3D moving window finite difference time domain (MW-FDTD) method for calculating lightning electromagnetic fields over large-scale terrains. The efficacy and accuracy of the proposed method are evaluated by comparing its results with the results obtained from a conventional FDTD method. The results show that the GPU-based MW-FDTD method is capable of providing highly accurate results 42 times faster than the conventional CPU-based FDTD method. Moreover, the proposed method required only (2MNx)×100=40% . of the memory needed for carrying out the calculation compared to a conventional FDTD method, where M and Nx are the size of the entire domain in the conventional FDTD method and size of the divided blocks in the MW-FDTD method domain, respectively. The results show the applicability of the MW-FDTD-GPU method for dealing with lightning electromagnetic problems as well as large-scale electromagnetic compatibility (EMC) applications where the efficiency and minimization of the computational time and memory requirements are of great importance.
پژوهشگران	سجاد محمدی (نفر اول)، حمیدرضا کرمی (نفر دوم)، محمد آزادی فر (نفر سوم)، مارکوس روبین اشتاین (نفر چهارم)، فرهاد رشیدی (نفر پنجم)