@prefix isq: <https://w3id.org/standards/isq/ontologies/core/> .
@prefix smart: <https://example.org/smart-sdu/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<isq:t11-4.38>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "11-4.38" ;
  skosxl:prefLabel "Blake number"@en ;
  skosxl:altLabel "Bl"@en ;
  skos:definition "relation between inertial forces and viscous forces in a porous material, expressed by\n\nstem:[Bl = (v rho l)/(eta(1-epsilon))]; where\n\nstem:[v]:: is speed (<<iso80000-3>>) of the fluid,\nstem:[rho]:: is mass density (<<iso80000-4>>) of the fluid,\nstem:[l]:: is characteristic length (<<iso80000-3>>) defined as the volume of a particle divided by its surface area,\nstem:[eta]:: is dynamic viscosity (<<iso80000-4>>) of the fluid, and\nstem:[epsilon]:: is porosity of the material (=void fraction)\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-11> ;
  skos:note "The Blake number can be interpreted as a Reynolds number for flow in porous material."@en ;
  iso:urn <urn:iso:std:iso:80000:-11:ed-2:en:item:11-4.38> .