Description
Areas of application
- Density analysis: Precise measurement of three-dimensional density distributions in gases.
- Temperature calculation: Derivation of temperature distributions by combining density measurements and pressure data with the ideal gas equation.
Functionality
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Light rays are deflected by density gradients in the gas
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These deflections cause visible shifts in a randomly structured dot pattern that serves as a background
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To determine the refractive index, cross-correlation algorithms analyze the shifts by comparing a reference image without a measurement object with a measurement image of the density field
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Tomographic algorithms and the Gladstone-Dale relationship make it possible to reconstruct the three-dimensional density field
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The combination with pressure measurements allows temperature determinations using the ideal gas equation
Properties
- Simple implementation with cost-efficient components
- Versatile application for a wide range of gases and geometries
