国产bbaaaaa片,成年美女黄网站色视频免费,成年黄大片,а天堂中文最新一区二区三区,成人精品视频一区二区三区尤物

首頁(yè)> 外文OA文獻(xiàn) >The role of the dissipative and random forces in the calculation of the pressure of simple fluids with dissipative particle dynamics
【2h】

The role of the dissipative and random forces in the calculation of the pressure of simple fluids with dissipative particle dynamics

機(jī)譯：耗散和隨機(jī)力在計(jì)算中的作用 ??具有耗散粒子動(dòng)力學(xué)的簡(jiǎn)單流體壓力

代理獲取
本網(wǎng)站僅為用戶(hù)提供外文OA文獻(xiàn)查詢(xún)和代理獲取服務(wù)，本網(wǎng)站沒(méi)有原文。下單后我們將采用程序或人工為您竭誠(chéng)獲取高質(zhì)量的原文，但由于OA文獻(xiàn)來(lái)源多樣且變更頻繁，仍可能出現(xiàn)獲取不到、文獻(xiàn)不完整或與標(biāo)題不符等情況，如果獲取不到我們將提供退款服務(wù)。請(qǐng)知悉。
  • 摘要
  • 著錄項(xiàng)
  • 相似文獻(xiàn)
  • 相關(guān)主題

摘要

The role of viscous forces coupled with Brownian forces in momentumconserving computer simulations is studied here in the context of theircontribution to the total average pressure of a simple fluid as derived fromthe virial theorem, in comparison with the contribution of the conservativeforce to the total pressure. The specific mesoscopic model used is the oneknown as dissipative particle dynamics, although our conclusions apply tosimilar models that obey the fluctuation dissipation theorem for short rangeinteractions and have velocity dependent viscous forces. We find that theaverage contribution of the random and dissipative forces to the pressure isnegligible for long simulations, provided these forces are appropriatelycoupled and when the finite time step used in the integration of the equationof motion is not too small. Finally, we study the properties of the fluid whenthe random force is made equal to zero and find that the system freezes as aresult of the competition of the dissipative and conservative forces.
機(jī)譯：本文結(jié)合粘性力和布朗力在動(dòng)量守恒計(jì)算機(jī)模擬中的作用進(jìn)行了研究，對(duì)比了保守力對(duì)總壓力的貢獻(xiàn)，它們是根據(jù)病毒定理推導(dǎo)的簡(jiǎn)單流體總平均壓力的貢獻(xiàn)。盡管我們的結(jié)論適用于服從短程相互作用的波動(dòng)耗散定理并具有與速度有關(guān)的粘性力的類(lèi)似模型，但使用的特定介觀模型稱(chēng)為耗散粒子動(dòng)力學(xué)。我們發(fā)現(xiàn)，對(duì)于長(zhǎng)時(shí)間的模擬，隨機(jī)力和耗散力對(duì)壓力的平均貢獻(xiàn)是微不足道的，前提是這些力適當(dāng)?shù)伛詈喜⑶以诜e分運(yùn)動(dòng)方程時(shí)使用的有限時(shí)間步幅不太小時(shí)。最后，我們研究了當(dāng)隨機(jī)力等于零時(shí)流體的性質(zhì)，并發(fā)現(xiàn)系統(tǒng)由于耗散力和保守力的競(jìng)爭(zhēng)而凍結(jié)。

著錄項(xiàng)

相似文獻(xiàn)

  • 外文文獻(xiàn)
  • 中文文獻(xiàn)
  • 專(zhuān)利
代理獲取

客服郵箱：kefu@zhangqiaokeyan.com

京公網(wǎng)安備：11010802029741號(hào) ICP備案號(hào)：京ICP備15016152號(hào)-6 六維聯(lián)合信息科技 (北京) 有限公司?版權(quán)所有

  • 客服微信

  • 服務(wù)號(hào)