Wavenumber response of the shear probe: Difference between revisions
No edit summary |
No edit summary |
||
| (One intermediate revision by one other user not shown) | |||
| Line 1: | Line 1: | ||
{{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. | 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 | ||
| Line 16: | Line 21: | ||
---------------------------- | ---------------------------- | ||
return to [[Flow chart for shear probes]] | 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.
{{#default_form:DefineConcept}} {{#arraymap:|,|x||}}
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
[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>k_0</math> that is larger than 50 cpm.
References
- ↑ {{#arraymap:P. Macoun and R. Lueck|,|x|x|, |and}}. 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
