Linked Questions
13 questions linked to/from Is thermodynamics only applicable to systems in equilibrium?
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Is "equilibrium state" equivalent to "well-defined state variables"?
Follow up to
Intuitively, why is a reversible process one in which the system is always at equilibrium?
and
How slow is a reversible adiabatic expansion of an ideal gas?
Suppose you have a piston ...
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8
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2
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Assumptions of thermodynamic & chemical equilibrium in fluid-dynamics
I am reading about the Euler equations of fluid dynamics from
Leveque's Numerical Methods for Conservation Laws. After introducing the mass, momentum and energy equations, some thermodynamic concepts ...
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2
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2
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Forms of the first law of thermodynamics
The first law of thermodynamics states that
$$\frac{D}{Dt}(K+U)=W+H,$$
where K is the kinetic energy, U is the internal energy, W is the power of the external forces and H is the heat flux. I have ...
2
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3
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On the way adiabatic processes were defined in Blundell's Concepts in Thermal Physics
In Blundell's Concepts in Thermal Physics, page $117$, the author defines an adiabatic expansion as follows,
The word adiathermal means ‘without flow of heat’. A system bounded by adiathermal walls ...
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4
votes
4
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Entropy production in isolated system
My question relates to the stereotypical example for understanding the first and second laws: an isolated system filled with a gas of non-interacting molecules with constant ($E$,$V$,$N$) has two ...
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3
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2
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564
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Are state variables defined outside equilibrium?
State functions seem to always be described as relating state variables in equilibrium, wikipedia about state functions:
In thermodynamics, a state function, [...] is a function defined for a system ...
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3
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1
answer
493
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Explain $\rho_{0}\dot{e} - \bf{P}^{T} : \bf{\dot{F}}+\nabla_{0} \cdot \bf{q} -\rho_{0}S = 0$
I am trying to understand the balance of energy -law from continuum mechanics, fourth law here. Could someone break this a bit to help me understand it? From chemistry, I can recall $$dU = \partial Q +...
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1
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4
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On the requirement of equilibrium in thermodynamics
I am currently watching a thermodynamics course offered by MIT. Here is the link:
https://www.youtube.com/watch?v=kLqduWF6GXE&list=PLA62087102CC93765&index=2
From minute 18:00 until 19:10, the ...
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3
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1
answer
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Derivation of general equation of heat transfer & entropy
In Landau & Lifshtiz Volume 6 on fluid mechanics we derive the general equation of heat transfer by starting with the expression
$$
\partial_t \left( \frac{1}{2} \rho v^2 + \rho \varepsilon \right)...
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4
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1
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What are some good articles on trend to equilibrium?
I am interested in studying systems out of equilibrium that are trending to equilibrium. Trend to equilibrium, entropy production, etc. seem to be very tricky topics. Any suggestions will be ...
1
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1
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Entropy production, local thermodynamic equilibrium and adiabatic process
It is said that for local thermodynamic equilibrium the local entropy production needs to be 0.
Now, I am reading the following from the book by de Groot and Mazur "Non-Equilibrium Thermodynamics".
...
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2
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2
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Can equilibrium thermodynamics be used to analyze irreversible processes?
As usually taught in undergraduate courses, classical thermodynamics is actually thermo-statics, the thermal physics of equilibrium states. Even in this very restricted form it can and does make ...
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Question about adiabatic process (in Landau&Lifshitz's book)
In section 11 of Landau's statistical physics part 1, he wrote the following:
Let us suppose that a body is thermally isolated, and is subject to external conditions which vary sufficiently slowly. ...
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