Blasius Skin Friction
A Blasius boundary layer describes the steady two-dimensional laminar boundary layer that forms on a semi-infinite plate, which is held parallel to a constant unidirectional flow. Skin friction is friction between the fluid and the plate moving through it.
The Blasius skin friction decreases as the square root of the Reynolds number.
Formula
![QuantityVariable[Subscript["c", "f"], "Unitless"] == 1.338/Sqrt[QuantityVariable["Re", "ReynoldsNumber"]]](https://www.wolframcloud.com/objects/resourcesystem/marketplacestorage/resources/e50/e50b14f0-31f8-42c1-8856-250ee9e1be45/Webpage/FormulaImage.png "Copy to Clipboard")
| symbol | description | physical quantity |
|---|---|---|
| cf | Blasius skin friction | "Unitless" |
| Re | Reynolds number | "ReynoldsNumber" |
Forms
Examples
Get the resource:
| In[1]:= | ![ResourceObject["Blasius Skin Friction"]](images/e50/e50b14f0-31f8-42c1-8856-250ee9e1be45-io-1-i.en.gif){kind=small} |
| Out[1]= |  |
Get the formula:
| In[2]:= | ![FormulaData[ResourceObject["Blasius Skin Friction"]]](images/e50/e50b14f0-31f8-42c1-8856-250ee9e1be45-io-2-i.en.gif){kind=small} |
| Out[2]= |  |
Use some values:
| In[3]:= | ![FormulaData[
ResourceObject[
"Blasius Skin Friction"], {QuantityVariable[
"Re","ReynoldsNumber"] -> 10}]](images/e50/e50b14f0-31f8-42c1-8856-250ee9e1be45-io-3-i.en.gif){kind=small} |
| Out[3]= |  |