Adiabatic free expansion of real (Van der Waal's model) gas below/at/above...
For an adiabatic free expansion, $W = 0$ and $Q=0$. Therefore, by the first law of thermodynamics, $\Delta U = Q -W = 0$.For a Van der Waals model of a real gas, $\Delta U = n C_v \Delta T - a\,n^2...
View ArticleCan we apply thermodynamics processes for real gas too? And how
Like in adiabatic process there is closed system but in reality we know there is no such thing as closed system there will be still exchange of heat so it will not work adiabatically means it is only...
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Basic Thermodynamics: Quasistatic Adiabatic Process
I'm going through the exercises in a Thermodynamics book, just to revise and build my intuition. Right now, I'm working on:Show that for a quasistatic adiabatic process in a perfect gas, with constant...
View ArticleQuestion 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. Such...
View ArticleHow to model adiabatic lapse rate from first principles?
As a motivating example, consider that the grand canyon floor is ~11ºC warmer than the top. The dry adiabatic lapse rate of 9.8ºC/km, at the average depth of 1.2km deep, implies a 11.76ºC warmer floor...
View ArticleAdiabatic volume change of an ideal gas thought process
I am struggling with trying to solve the following problem, attempting just (a) and the first part of (b) for this exercise:During a reversible adiabatic volume change of an ideal gas, $PV^{\gamma}$...
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Adiabatic Availability?
In the textbook "Thermodynamics: Foundations and Applications" by Elias P. Gyftopoulas and Gian Paolo Beretta (Dover). In chapter 5, on page 73 (section 5.3) the book says: Adiabatic availability is...
View ArticleReversibility of the ideal Carnot cycle
How do adiabatic processes in the reversible Carnot cycle take place? Is the gas adiabatically isolated? If so, how would that happen in real life? (I know that Carnot cycle is not practically...
View ArticleTwo gases seperated by semi-permeable membrane
The problem is as follows: Two ideal gases are contained adiabatically and separated by an insulating, fixed piston that blocks the molecules of gas 2 but allows the molecules of gas 1 through(in both...
View ArticleIs sound really adiabatic because it is a fast process?
In many books I have consumed so far there is the statement that sound is adiabatic because heat transfer does not have nearly enough time to reach isothermal equilibrium. Doesn't this contradict...
View ArticleContainer divided by frictionless adiabatic wall: reversible or irreversible...
I have encountered an issue in the following physical situation. Consider a rigid, thermally insulated container divided by a barrier parallel to its base into two parts, left and right, each...
View ArticleContainer divided by adiabatic wall with mass and friction: why is it a...
Thanks to the help of @ChetMiller, the following fact is essentially concluded in this thread. Consider a rigid, thermally isolated container divided by a massless barrier parallel to its base into two...
View ArticleAdiabatic free expansion into vacuum
Consider an adiabatic vessel with a partition and a plug in the partition wall. On one side of the partition, there is gas at certain pressure and on the other side of partition there is perfect vacuum...
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Question about Landau's derivation of the energy relation in Statistical...
In Statistical Physics (Vol 5 of Landau's books) section 11, Landau derives an important relation: $\overline{\frac{\partial E(p, q;\lambda)}{\partial \lambda}} = \left(\frac{\partial E}{\partial...
View ArticleTransitionless quantum driving for specific eigenstates
Transitionless quantum driving is a concept that was invented by Berry in 2009. In his article on transitionless quantum driving he showed that it is possible to speed up adiabatic evolution of...
View ArticleIn an adiabatic process, if there is no heat flow between system and...
How can the temperature of a body change unless heat flows in or out of it?So shouldn't all adiabatic process be considered isothermal too? but that is not true as both the processes have different...
View ArticleChange in temperature due to adiabatic expansion against the vacuum
Let's consider an ideal gas that expands in vacuum and it is thermally isolated from the surroundings. Since it is isolated, it does not exchange heat with the exterior $Q=0$. Since it is expanding...
View ArticleTemperature increase in fixed volume due to gas injection
I have a vessel of fixed volume with adiabatic boundary which is initially filled with air at pressure of 1 atm and temperature of 300 K. Now, I inject air from an external source at a fixed flow rate...
View ArticleWhy do we need an adiabatic expansion in the Carnot cycle? [duplicate]
As we know that 1st process is an reversible isothermal expansion during this the system is in quasi static equilibrium which helps in increasing the volume of the system but why does the second step...
View ArticleBerry phase disappearing in adiabatic approximation?
The celebrated adiabatic theorem states that for a system initially in the eigenstate $|\psi(0)\rangle = |n(0)\rangle$ for $t=0$, it will stay in that state afterward under adiabatic...
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