| Predicate | Object |
|---|---|
rdf:type |
qudt:QuantityKind |
dcterms:description |
In heat transfer analysis, thermal diffusivity (usually denoted \(\alpha\) but \(a\), \(\kappa\),\(k\), and \(D\) are also used) is the thermal conductivity divided by density and specific heat capacity at constant pressure. The formula is: \(\alpha = {k \over {\rho c_p}}\), where k is thermal conductivity (\(W/(\mu \cdot K)\)), \(\rho\) is density (\(kg/m^{3}\)), and \(c_p\) is specific heat capacity (\(\frac{J}{(kg \cdot K)}\)) .The denominator \(\rho c_p\), can be considered the volumetric heat capacity (\(\frac{J}{(m^{3} \cdot K)}\)). |
qudt:applicableUnit |
|
qudt:dbpediaMatch |
http://dbpedia.org/resource/Thermal_diffusivity |
qudt:hasDimensionVector |
qkdv:A0E0L2I0M0H0T-1D0 |
qudt:informativeReference |
http://en.wikipedia.org/wiki/Thermal_diffusivity |
qudt:latexDefinition |
\(a = \frac{\lambda}{\rho c_\rho}\), where \(\lambda\) is thermal conductivity, \(\rho\) is mass density and \(c_\rho\) is specific heat capacity at constant pressure. |
qudt:latexSymbol |
\(\alpha\) |
qudt:symbol |
“a” |
qudt:wikidataMatch |
http://www.wikidata.org/entity/Q3381809 |
rdfs:comment |
“Applicable units are those of quantitykind:AreaPerTime” |
rdfs:isDefinedBy |
http://qudt.org/3.1.10/vocab/quantitykind |
rdfs:label |
“Thermal Diffusivity”@en |
skos:broader |
quantitykind:AreaPerTime |