GLOSSARY

Page tree

Versions Compared

Old Version 7

changes.mady.by.user Arthur Aslanyan (Nafta College)

Saved on

compared with

New Version 8

changes.mady.by.user Arthur Aslanyan (Nafta College)

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

LaTeX Math Inline
body{\rm Re}(l) = \frac{d \, v \, \rho}{\mu}

Reynolds number

LaTeX Math Inline
bodyd(l)

Inner diameter of a pipe

LaTeX Math Inline
body\mu(l) = \mu( \, p(l), \, T(l) \,)

dynamic fluid viscosity as function

LaTeX Math Inline
body\mu(p, T)
of pressure
LaTeX Math Inline
bodyp(l)
and temperature
LaTeX Math Inline
bodyT(l)
along the pipe


For the transient and 

Для переходных и турбулентных режимов течения коэффициент трения удовлетворяет эмпирической модели Колбрука-Уайта (Colebrook–White), которая учитывает шероховатость внутренней поверхности трубы

LaTeX Math Inline
body\epsilon
(в мм)

...

Typical surface roughness of a factory steel pipelines is 

LaTeX Math Inline
body\epsilon
 = 0.05 mm which may increase exponentially significantly under mineral sedimentation or erosive impact of the flowing fluids.

See Surface roughness for more data on typical values for various materials and processing conditions.



Существует множество явных аппроксимаций решения уравнения

LaTeX Math Block Reference
anchorf_CW
, в частности следующая (Monzon, Romeo, Royo, 2002):

...