Tait equation of state: Difference between revisions

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The '''Tait equation''' is an [[equation of state]].  The equation was originally published by Peter Guthrie Tait in 1888. (Yuan-Hui Li, 15 May 1967, Equation of State of Water and Sea Water, Journal of Geophysical Research 72 (10), p. 2665.) It may be written as
The '''Tait equation''' is an [[equations of state | equation of state]].  The equation was originally published by [[Peter Guthrie Tait]] in 1888 <ref>[http://archive.org/stream/reportonscientif02grea#page/n21/mode/2up P. G. Tait "Report on some of the physical properties of fresh water and sea water", Report on the scientific results of the voyage of H.M.S. Challenger during the years 1873-76. Physics and chemistry '''2''' pp. 1-76 (1888)]</ref><ref>[http://dx.doi.org/10.1029/JZ072i010p02665  Yuan-Hui Li "Equation of state of water and sea water", Journal of Geophysical Research '''72''' pp. 2665-2678 (1967)]</ref><ref>[http://www.archive.org/details/supersonicflowsh00cour Richard Courant "Supersonic flow and shock waves a manual on the mathematical theory of non-linear wave motion", Courant Institute of Mathematical Sciences, New York University, New York (1944)]</ref>. It may be written as


:<math> \beta := \frac{-1}{V} \left ( \frac{\partial V}{\partial P} \right )_T = \frac{1}{V} \frac{C}{B+P}</math>
:<math> \kappa_T := \frac{-1}{V} \left ( \frac{\partial V}{\partial p} \right )_T = \frac{1}{V} \frac{C}{B+p}</math>


or in the integrated form
or in the integrated form


:<math> V = V_0 - C \log \frac{B+P}{B+P_0}</math>
:<math> V = V_0 - C \log \frac{B+p}{B+p_0}</math>


where
where
*<math> \beta</math> is the [[compressibility]].
*<math>\kappa_T</math> is the [[Compressibility# Isothermal compressibility |  Isothermal compressibility]]
*<math> V \ </math> is the [[specific volume]].
*<math> V \ </math> is the [[specific volume]].
*<math> B \ </math> and <math> C \ </math> are functions of temperature that are independent of pressure.
*<math> B \ </math> and <math> C \ </math> are functions of [[temperature]] that are independent of [[pressure]].
 
It is quite common that this name is improperly used for the adiabatic form of the
[[stiffened equation of state ]] , which is the [[Cole equation of state ]]. This perhaps stems for the classic text by Cole
<ref>[http://www.archive.org/details/underwaterexplos00cole Robert H Cole "Underwater explosions", Princeton University Press, Princeton (1948)]</ref> calling this equation a "modified Tait equation" (p. 39).


== References ==
== References ==
<references/>


[[Category:Equations of state]]
[[Category:Equations of state]]
[[Category: Water]]

Latest revision as of 12:41, 6 March 2015

The Tait equation is an equation of state. The equation was originally published by Peter Guthrie Tait in 1888 [1][2][3]. It may be written as

or in the integrated form

where

It is quite common that this name is improperly used for the adiabatic form of the stiffened equation of state , which is the Cole equation of state . This perhaps stems for the classic text by Cole [4] calling this equation a "modified Tait equation" (p. 39).

References[edit]