This HTML5 document contains 18 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

Namespace Prefixes

Prefix	IRI
n2	http://qudt.org/vocab/quantitykind/
dcterms	http://purl.org/dc/terms/
n5	http://qudt.org/vocab/unit/
n4	http://qudt.org/schema/qudt/
skos	http://www.w3.org/2004/02/skos/core#
n8	http://qudt.org/vocab/dimensionvector/
rdfs	http://www.w3.org/2000/01/rdf-schema#
n7	http://qudt.org/2.1/vocab/
rdf	http://www.w3.org/1999/02/22-rdf-syntax-ns#
xsdh	http://www.w3.org/2001/XMLSchema#

Statements

Subject Item

n2:ThermalDiffusivity

rdf:type

n4:QuantityKind

rdfs:label

Thermal Diffusivity

rdfs:isDefinedBy

n7:quantitykind

skos:broader

n2:AreaPerTime

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 (\(\frac{J}{(m^{3} \cdot K)}\)).

n4:applicableUnit

n5:M2-HZ n5:FT2-PER-HR n5:CentiM2-PER-SEC n5:MilliM2-PER-SEC n5:IN2-PER-SEC n5:M2-PER-SEC n5:FT2-PER-SEC

n4:dbpediaMatch

http://dbpedia.org/resource/Thermal_diffusivity

n4:hasDimensionVector

n8:A0E0L2I0M0H0T-1D0

n4:informativeReference

http://en.wikipedia.org/wiki/Thermal_diffusivity

n4: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.

n4:latexSymbol

\(\alpha\)

n4:symbol

a