Péclet number: Difference between revisions

From Glossary of Meteorology
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|Display title=P&#x000e9;clet number
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|Meaning=A [[nondimensional number]] arising in problems of [[heat transfer]] in fluids.
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|Explanation=It is the ratio of [[heat]] advection to heat diffusion and may be written  <blockquote>[[File:ams2001glos-Pe7.gif|link=|center|ams2001glos-Pe7]]</blockquote> where ''U'' is a [[characteristic velocity]], ''L'' a [[characteristic length]], and ''K'' the [[thermometric conductivity]].  Also,  <blockquote>[[File:ams2001glos-Pe8.gif|link=|center|ams2001glos-Pe8]]</blockquote> the product of the [[Reynolds number]] and [[Prandtl number]].
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== P&#x000e9;clet number ==
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<div class="definition"><div class="short_definition">A [[nondimensional number]] arising in problems of [[heat transfer]] in fluids.</div><br/> <div class="paragraph">It is the ratio of [[heat]] advection to heat diffusion and may be written  <div class="display-formula"><blockquote>[[File:ams2001glos-Pe7.gif|link=|center|ams2001glos-Pe7]]</blockquote></div> where ''U'' is a [[characteristic velocity]], ''L'' a [[characteristic length]], and ''K'' the [[thermometric conductivity]].  Also,  <div class="display-formula"><blockquote>[[File:ams2001glos-Pe8.gif|link=|center|ams2001glos-Pe8]]</blockquote></div> the product of the [[Reynolds number]] and [[Prandtl number]].</div><br/> </div>
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[[Category:Terms_P]]

Latest revision as of 05:10, 29 March 2024

A nondimensional number arising in problems of heat transfer in fluids.
It is the ratio of heat advection to heat diffusion and may be written
ams2001glos-Pe7
where U is a characteristic velocity, L a characteristic length, and K the thermometric conductivity. Also,
ams2001glos-Pe8
the product of the Reynolds number and Prandtl number.
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