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Related Concept Videos

The Joule and Joule–Thomson Experiments01:23

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Consider an adiabatic system composed of two chambers, A and B, designed such that no heat flows into or out of the system. Initially, chamber A is filled with a gas at a fixed temperature T1, pressure p1, and volume V1, while chamber B is evacuated. The gas is then gradually forced through a rigid, porous barrier to chamber B, ultimately reaching temperature T2, pressure p2, and volume V2. A piston on the right side maintains a constant pressure (p2), which is lower than p1. The significant...
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Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores
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Shock-wave compression and Joule-Thomson expansion.

Wm G Hoover1, Carol G Hoover1, Karl P Travis2

  • 1Ruby Valley Research Institute, Highway Contract 60, Box 601 Ruby Valley, Nevada 89833, USA.

Physical Review Letters
|April 29, 2014
PubMed
Summary
This summary is machine-generated.

Atomistic simulations reveal that a porous plug can create steady throttling flow, producing cooler, dilute fluids. This method simulates Joule-Kelvin throttling, demonstrating unique fluid dynamics and thermodynamic responses.

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Area of Science:

  • Thermodynamics
  • Fluid Dynamics
  • Computational Physics

Background:

  • Simulating one-dimensional shock waves typically involves particle injection/extraction.
  • Previous models show tensor temperature and delayed responses in shock profiles.

Purpose of the Study:

  • To simulate steady Joule-Kelvin throttling flow through a porous medium.
  • To investigate the production of cooler, dilute fluids using a novel simulation setup.

Main Methods:

  • Utilized a simulation box with particle injection/extraction, similar to shock wave simulations.
  • Introduced a short-ranged external

Main Results:

  • Successfully simulated steady Joule-Kelvin throttling flow of hot dense fluid.
  • Generated a dilute and cooler product fluid downstream of the porous plug.
  • Observed phenomena consistent with tensor temperature and delayed responses.

Conclusions:

  • The simulation geometry, with an added plug field, effectively models Joule-Kelvin throttling.
  • This approach offers a method for producing cooler, less dense fluids from hotter, denser ones.
  • The study highlights the applicability of shock wave simulation techniques to other fluid dynamics problems.