Paul Richard Heinrich Blasius

Infobox_Scientist
name = Paul Richard Heinrich Blasius


image_width =
caption =
birth_date = August 9 1883
birth_place = Berlin, Germany
death_date = April 24 1970
death_place = Hamburg, Germany
residence =
citizenship = German
nationality = German
ethnicity =
field = Fluid mechanics and mechanical engineering
work_institution =
alma_mater = University of Göttingen
doctoral_advisor = Ludwig Prandtl
doctoral_students =
known_for = Blasius boundary layer
author_abbreviation_bot =
author_abbreviation_zoo =
prizes =
religion =
footnotes =

Paul Richard Heinrich Blasius (1883 - 1970) was a German fluid dynamics engineer.

He was one of the first students of Prandtl who provided a mathematical basis for boundary-layer drag but also showed as early as 1911 that the resistance to flow through smooth pipes could be expressed in terms of the Reynolds number for both laminar and turbulent flow.

One of his most notable contributions involves a description of the steady two-dimensional boundary-layer that forms on a semi-infinite plate which is held parallel to a constant unidirectional flow $U$.

Correlations

First law of Blasius for Turbulent fanning friction factor:
$f/2=0.039*Re^-0.26$

Second law of Blasius for Turbulent fanning friction factor:
$f/2=0.023*Re^-0.26$

References

* Hager, W.H., "Blasius: A life in research and education," "Experiments in Fluids," 34: 566-571 (2003)

Persondata
NAME=Paul Richard Heinrich Blasius
ALTERNATIVE NAMES=Heinrich Blasius
SHORT DESCRIPTION=German engineer
DATE OF BIRTH=August 9 1883
PLACE OF BIRTH= Berlin, Germany
DATE OF DEATH=April 24 1970
PLACE OF DEATH=Hamburg, Germany