@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:t11-4.32>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "11-4.32" ;
  skosxl:prefLabel "Stokes number <time-related>"@en ;
  skosxl:altLabel "Stk"@en ;
  skos:definition "quotient of friction and inertia forces for particles in a fluid or in a plasma, expressed by\n\nstem:[Stkt = t_\"r\"//t_\"a\"]; where\n\nstem:[t_\"r\"]:: is relaxation time (<<iso80000-12>>) of particles to achieve fluid's velocity due to friction (viscosity), and\nstem:[t_\"a\"]:: is time (<<iso80000-3>>) of fluid to alter its velocity under external influence\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-11> ;
  skos:note "In most cases stem:[t_\"r\"=l//v]; where stem:[l] is characteristic length, and stem:[v] is speed of fluid. The characteristic length can be the diameter of an obstacle or hole."@en ;
  iso:urn <urn:iso:std:iso:80000:-11:ed-2:en:item:11-4.32> .