In the study of entropy expression of porous media convection - diffusion process , the reason why minimum entropy production principle is uncomformable is analyzed 在多孔介質(zhì)對(duì)流擴(kuò)散問(wèn)題的熵產(chǎn)規(guī)律的研究中,分析了最小熵產(chǎn)原理在這一問(wèn)題中的不適應(yīng)性的原因。
The total entropy production for affinity chromatography and the equations of mass and heat fluxes under the condition of the multi - field synergy were obtained 得到了親和層析過(guò)程的總熵變表達(dá)式,多場(chǎng)協(xié)同條件下質(zhì)量通量和熱量通量的唯象表達(dá)式以及相應(yīng)的傳質(zhì)和傳熱系數(shù)。
The dynamic adjustment of an alluvial river has a tendency that the entropy production or the rate of energy dissipation of flow is minimum rather than the entropy is maximum when a river is in a relative equilibrium condition 當(dāng)河流處于相對(duì)平衡狀態(tài)時(shí),水流的熵產(chǎn)生或能耗率為最小值。最小熵產(chǎn)生原理或最小能耗率原理保證了河流在相對(duì)平衡狀態(tài)的穩(wěn)定性。
And others are found , and the expression of minimum rate of energy dissipation of flow is re - derived based on the theory of minimum entropy production . ( 2 ) it will be pointed out that the entropy is different from the entropy production in a river system ( 2 )指出河流系統(tǒng)中的熵與熵產(chǎn)生是兩個(gè)不同的概念,沖積河流在調(diào)整過(guò)程中,力求使水流的熵產(chǎn)生或能耗率趨于最小值,而不是使熵趨于最大值。
The theory of minimum entropy production or minimum rate of energy dissipation shows that a river is stable when it is in a relative equilibrium condition . ( 3 ) the river facies formulas of alluvial river have been developed using the theory of minimum rate of energy dissipation together with flow continuity and motion equations , suspended load transport or bed load transport equation . ( 4 ) the causes of the river patterns are explained using the theory of minimum rate of energy dissipation ( 3 )基于最小能耗率原理,以水流能耗率作為目標(biāo)函數(shù),以水流連續(xù)方程、水流運(yùn)動(dòng)方程及懸移質(zhì)挾沙力公式或推移質(zhì)輸沙率公式作為約束條件,通過(guò)對(duì)目標(biāo)函數(shù)求條件極值,分別推導(dǎo)出以懸移質(zhì)造床為主的顯式河相關(guān)系式和以推移質(zhì)造床為主的顯式河相關(guān)系式。
Entropy production determines the performance of thermal machines such as power plants, heat engines, refrigerators, heat pumps, and air conditioners. It also plays a key role in the thermodynamics of irreversible processes.