翻訳と辞書 Words near each other ・ Pa Faek, Phayao ・ Pa Gach-e Kal Jamshid ・ Pa Gach-e Lahbari ・ Pa Garu ・ Pa George Karika ・ Pa Godar ・ Pa Godar, Razavi Khorasan ・ Pa Ham ・ Pa Hin Ngam National Park ・ PA Hospital busway station ・ Pa Hung ・ P39 ・ P3a ・ P3AT ・ P3b ・ P3M ・ P3M3 ・ P3O ・ P3P ・ P4 ・ P4 (programming language) ・ P4 Radio Hele Norge ・ P40 ・ P400 ・ P400-class patrol vessel ・ P4000 ・ P41 ・ P42 ・ P43 ・ P44 Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク P3M ： ウィキペディア英語版 P3M :''For the aircraft, see Martin P3M'' Particle–Particle-Particle–Mesh (P3M) is a Fourier-based Ewald summation method〔(【引用サイトリンク】title=Fourier-based Ewald Summation Methods (Web Version) ) 〕 to calculate potentials in N-body simulations.〔(【引用サイトリンク】How to mesh up Ewald sums. II. An accurate error estimate for the particle–particle–particle-mesh algorithm )〕〔(【引用サイトリンク】N-body simulations, section P3M and PM Tree Codes )〕 The potential could be the electrostatic potential among N point charges i.e. molecular dynamics, the gravitational potential among N gas particles in e.g. smoothed particle hydrodynamics, or any other useful function. It is based on the particle mesh method, where particles are interpolated onto a grid, and the potential is solved for this grid (e.g. by solving the discrete Poisson equation). This interpolation introduces errors in the force calculation, particularly for particles that are close together. Essentially, the particles are forced to have a lower spatial resolution during the force calculation. The P3M algorithm attempts to remedy this by calculating the potential through a direct sum for particles that are close, and through the particle mesh method for particles that are separated by some distance. == References == 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「P3M」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.