發(fā)布時(shí)間：2018-01-01 18:17

  本文關(guān)鍵詞：一維非穩(wěn)態(tài)導(dǎo)熱的火積耗散場(chǎng)分析　出處：《數(shù)學(xué)的實(shí)踐與認(rèn)識(shí)》2017年03期 　論文類型：期刊論文

  更多相關(guān)文章： 火積耗散場(chǎng) 熵產(chǎn)生 無(wú)限大物體 半無(wú)限大物體 無(wú)限大平板

【摘要】：分別對(duì)無(wú)限大、半無(wú)限大物體與無(wú)限大平板非穩(wěn)態(tài)導(dǎo)熱過(guò)程的火積耗散場(chǎng)進(jìn)行了分析,并將火積耗散場(chǎng)與熵產(chǎn)生場(chǎng)進(jìn)行了比較.無(wú)限大物體總的火積耗散隨時(shí)間的變化率為負(fù)定的,并對(duì)這一結(jié)論給出了證明.對(duì)于無(wú)限大物體,對(duì)耗散波峰的傳播速度與波峰振幅進(jìn)行了討論.對(duì)于半無(wú)限大物體,分別對(duì)邊界溫度固定與邊界熱流固定兩種導(dǎo)熱情形下的火積耗散場(chǎng)進(jìn)行了分析;對(duì)于無(wú)限大平板,分別對(duì)對(duì)流換熱與絕熱兩種邊界條件下的火積耗散場(chǎng)進(jìn)行了分析.
[Abstract]:Of infinite and semi infinite body with infinite flat non steady heat conduction process of entransy dissipation field were analyzed, and the entransy dissipation field and entropy production field were compared. Infinite total entransy dissipation rate of change over time is negative, and the conclusion is given the proof. For infinite object, the wave propagation velocity dissipation and wave amplitude are discussed. For the semi infinite body, respectively, on the boundary temperature and heat flux at the boundary of fixed fixed two kinds of thermal conditions of entransy dissipation field are analyzed; for infinite plate, two kinds of boundary conditions of convection heat transfer with the adiabatic entransy dissipation field is analyzed.

【作者單位】： 青島科技大學(xué)機(jī)電工程學(xué)院;
【基金】：國(guó)際自然科學(xué)基金(51374134,51674149) 博士學(xué)科重點(diǎn)專項(xiàng)科研基金(20133719110005) 青島科技大學(xué)科研啟動(dòng)基金(210101002667)
【分類號(hào)】：O414.1
【正文快照】： 1 引言 一切實(shí)際過(guò)程都是不可逆的.熵產(chǎn)可以作為過(guò)程不可逆性的度量.撕產(chǎn)場(chǎng)又稱熵源強(qiáng)度場(chǎng),這是一個(gè)有源場(chǎng),源的強(qiáng)度反映了過(guò)程的不可逆性.文獻(xiàn)[1]對(duì)非平衡場(chǎng)中熵源強(qiáng)度的分布規(guī)律進(jìn)行了研究.導(dǎo)熱過(guò)程是一種典型的不可逆過(guò)程.基于導(dǎo)熱過(guò)程與導(dǎo)電過(guò)程的相似性,過(guò)增元等人提出，

本文編號(hào)：1365653