从热质理论到能质理论  

From Thermomass Theory to Kinetomass Theory

作　　者：董源[1] 过增元[1] 

机构地区：[1]清华大学航天航空学院,热科学与动力工程教育部重点实验室,北京100084

出　　处：《工程热物理学报》2012年第3期465-468,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51076080;No.51136001)

摘　　要：现有流变学本构方程大多是基于唯象模型或者通过对线性定律进行修正而导出的,物理意义不够清晰。本文借鉴热质理论,提出连续介质微元的动能同样具有当量质量,可以用能质控制方程导出普适动能输运定律。普适动能输运定律在不同问题背景下,可以导出牛顿黏性定律,胡克定律以及流变学中较为基础的线性黏弹性本构方程。能质理论推导流变学本构方程的过程是基于第一性原理,不仅物理意义清晰,而上揭示了热输运与动能输运之间的内在统一规律。The present constitutive equations of rheology are mostly based on phenomenological models or modification of linear laws,with ambiguous physical meaning.From the idea of therniomass theory,the general transport law of momentum can be derived by defining the equivalent mass of kinetomass,i.e.the kinetomass.The general law reduces to the Newton＇s viscous law,the Hook＇s law or basic linear viscoelastic constitution equations respectively by different simplification.This process follows the first principle,inhabits the clear physical concept,and reveals the unity between heat and momentum transport processes.

关 键 词：热质理论 能质理论 流变学 非牛顿流动 本构方程 

分 类 号：O373[理学—流体力学]