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Related Concept Videos

Turbulent Flow: Problem Solving01:09

Turbulent Flow: Problem Solving

Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
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Steady, Laminar Flow in Circular Tubes

Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely axial,...
Couette Flow01:22

Couette Flow

Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
Laminar Flow01:27

Laminar Flow

Laminar flow represents a smooth, orderly fluid motion where particles move along parallel paths, resulting in minimal mixing between layers. Streamlined particle paths characterize this flow regime and occur under conditions where viscous forces dominate over inertial forces. The distinction between laminar, transitional, and turbulent flow is primarily determined by the Reynolds number, a dimensionless quantity calculated as:
Single Pipe Systems01:24

Single Pipe Systems

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Updated: Jul 2, 2026

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
07:17

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Published on: August 1, 2017

Compact flowing gas system for CO(2) lasers.

H L Pratt1

  • 1US Army Missile Research and Development Command, Redstone Arsenal, Alabama 35809.

The Review of Scientific Instruments
|August 1, 1978
PubMed
Summary
This summary is machine-generated.

A miniature vacuum pump enables gas flow for carbon dioxide (CO2) lasers, making compact laser systems feasible for various applications. This miniaturization opens new possibilities for integrated laser technologies.

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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Mechanical Engineering

Background:

  • Traditional flowing gas laser systems often require bulky components.
  • Miniaturization is a key trend across many scientific and technological fields.
  • Waveguide carbon dioxide (CO2) lasers offer specific advantages but can be limited by gas flow requirements.

Purpose of the Study:

  • To investigate the feasibility of using a miniature air-actuated vacuum pump for gas flow in waveguide CO2 lasers.
  • To assess the implications of this miniaturized gas flow system for laser applications.
  • To determine if compact flowing gas laser systems can be developed.

Main Methods:

  • A miniature air-actuated vacuum pump was employed.
  • The pump was used to generate gas flow at partial atmospheric pressures.
  • The system was integrated with a waveguide CO2 laser setup.

Main Results:

  • Successful gas flow was achieved at partial atmospheric pressures using the miniature pump.
  • The air-actuated vacuum pump effectively facilitated the necessary gas dynamics for laser operation.
  • The experimental setup demonstrated the viability of a compact gas flow solution.

Conclusions:

  • Miniature air-actuated vacuum pumps are effective for enabling gas flow in waveguide CO2 lasers.
  • The use of such pumps allows for significant miniaturization of flowing gas laser systems.
  • These findings suggest that compact flowing gas laser systems are suitable for a wider range of applications.