Wavenumber response of the shear probe: Difference between revisions
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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 | {{DefineConcept | ||
|description=Spatial averaging effect of the tip of a shear probe | |||
|article_type=Concepts | |||
}} | |||
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 | |||
<ref name="macounlueck2004">{{Cite journal | |||
|authors= P. Macoun and R. Lueck | |||
|journal_or_publisher= J. Atmos. Oceanic Technol. | |||
|paper_or_booktitle= Modeling the spatial response of the airfoil shear probe using different sized probes | |||
|year= 2004 | |||
|doi= 10.1175/1520-0426(2004)021 | |||
}}</ref> | |||
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>k_0</math> that is larger than 50 cpm. | |||
==References== | ==References== | ||
<references /> | <references /> | ||
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return to [[Flow chart for shear probes]] | |||
[[Category:Shear probes]] | |||
Latest revision as of 16:53, 7 May 2022
| Short definition of Wavenumber response of the shear probe |
|---|
| 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
