Van Der Waals EOS Shortcomings & Corrections

  • Thread starter Thread starter Krishna0703
  • Start date Start date
  • Tags Tags
    Van der waals
AI Thread Summary
The van der Waals equation of state has notable shortcomings, particularly in accurately predicting the behavior of real gases under extreme conditions. Common issues include its inability to account for high-pressure and low-temperature scenarios effectively. Despite these drawbacks, it remains a practical tool for many calculations where extreme precision is not critical. Users appreciate its ease of use compared to more complex models. Further information on its limitations and potential corrections is sought by participants in the discussion.
Krishna0703
Messages
15
Reaction score
0
what are the main drawbacks of the van der waals equation of state for real gases and how are they corrected?
 
Physics news on Phys.org


I have successfully used the van der Waals equation of state for numerous practical calculations that don't require extreme accuracy. Considering ease-of-use, it is one of the better mechanistic models available.
 


hey dudes..sure there are some drawbacks...concerning roots n so on..but am unable to find more info on that topic..if someone has more info..please do share...thanks in advance
 

Thread 'The Effect of Linear and Rotational Motion on Measured Weight'

Consider an extremely long and perfectly calibrated scale. A car with a mass of 1000 kg is placed on it, and the scale registers this weight accurately. Now, suppose the car begins to move, reaching very high speeds. Neglecting air resistance and rolling friction, if the car attains, for example, a velocity of 500 km/h, will the scale still indicate a weight corresponding to 1000 kg, or will the measured value decrease as a result of the motion? In a second scenario, imagine a person with a...
View full post »

Thread 'Coulomb gauge implies instantaneous radial electric field?'

Scalar and vector potentials in Coulomb gauge Assume Coulomb gauge so that $$\nabla \cdot \mathbf{A}=0.\tag{1}$$ The scalar potential ##\phi## is described by Poisson's equation $$\nabla^2 \phi = -\frac{\rho}{\varepsilon_0}\tag{2}$$ which has the instantaneous general solution given by $$\phi(\mathbf{r},t)=\frac{1}{4\pi\varepsilon_0}\int \frac{\rho(\mathbf{r}',t)}{|\mathbf{r}-\mathbf{r}'|}d^3r'.\tag{3}$$ In Coulomb gauge the vector potential ##\mathbf{A}## is given by...
View full post »
Thread 'Does Poisson's equation hold due to vector potential cancellation?'

Thread 'Does Poisson's equation hold due to vector potential cancellation?'

Imagine that two charged particles, with charge ##+q##, start at the origin and then move apart symmetrically on the ##+y## and ##-y## axes due to their electrostatic repulsion. The ##y##-component of the retarded Liénard-Wiechert vector potential at a point along the ##x##-axis due to the two charges is $$ \begin{eqnarray*} A_y&=&\frac{q\,[\dot{y}]_{\mathrm{ret}}}{4\pi\varepsilon_0 c^2[(x^2+y^2)^{1/2}+y\dot{y}/c]_{\mathrm{ret}}}\tag{1}\\...
View full post »

Similar threads

I Van der Waals Equation: How Surface is Considered
Replies
39
Views
4K
I Wall material effect on Van der Waals gas?
Replies
23
Views
2K
Compressibility factor and van der Waals equation for temp
Replies
3
Views
4K
About Van Der Waals interactions
Replies
2
Views
2K
A I'm trying to follow the proof given in Box 5.3 of MCP (Thorne/Blandford)
Replies
4
Views
2K
I Liquid-gas phase transition: metastable mixed states?
Replies
1
Views
2K
Interpretation of the Van der Waals Equation
Replies
3
Views
3K
Free expansion of a Van der Waals gas, physical explanation
Replies
4
Views
9K
Application of virial theorem
Replies
2
Views
1K
Van der waal's equation and resulting curve
Replies
19
Views
5K

Hot Threads

Recent Insights

Back
Top