Wavenumber response of the shear probe: Difference between revisions
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|description=Spatial averaging effect of the tip of a shear probe | |||
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The probe-response correction depends on the dimensions of the shear probe. | The probe-response correction depends on the dimensions of the shear probe. | ||
For a commonly used shear probe the spectrum is corrected for the spatial averaging of the shear probe by multiplying it by the factor <math>1+\left( \frac{k}{k_0} \right)^2</math> where <math>k_0</math> = 50 cpm and <math>k</math> is the wavenumber expressed in units of cpm | For a commonly used shear probe the spectrum is corrected for the spatial averaging of the shear probe by multiplying it by the factor <math>1+\left( \frac{k}{k_0} \right)^2</math> where <math>k_0</math> = 50 cpm and <math>k</math> is the wavenumber expressed in units of cpm | ||
Latest revision as of 16:53, 7 May 2022
| Short definition of Wavenumber response of the shear probe |
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| Spatial averaging effect of the tip of a shear probe |
This is the common definition for Wavenumber response of the shear probe, but other definitions maybe discussed within the wiki.
The probe-response correction depends on the dimensions of the shear probe. For a commonly used shear probe the spectrum is corrected for the spatial averaging of the shear probe by multiplying it by the factor [math]\displaystyle{ 1+\left( \frac{k}{k_0} \right)^2 }[/math] where [math]\displaystyle{ k_0 }[/math] = 50 cpm and [math]\displaystyle{ k }[/math] is the wavenumber expressed in units of cpm [1] The correction reaches a factor of 10 at a wavenumber of 150 cpm, and it is not recommended to use spectral data beyond this wavenumber unless your shear probe is small enough to have a cutoff wavenumber [math]\displaystyle{ k_0 }[/math] that is larger than 50 cpm.
References
- ↑ P. Macoun and R. Lueck. 2004. Modeling the spatial response of the airfoil shear probe using different sized probes. J. Atmos. Oceanic Technol.. doi:10.1175/1520-0426(2004)021
return to Flow chart for shear probes
