@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:t11-4.21>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "11-4.21" ;
  skosxl:prefLabel "Ekman number"@en ;
  skosxl:altLabel "Ek"@en ;
  skos:definition "quotient of viscous forces and Coriolis forces in the context of transfer of matter for the flow of a rotating fluid, expressed by\n\nstem:[Ek = sf(ii(v))//(2l^2 omega_\"E\" \"sin\"varphi)]; where\n\nstem:[sf(ii(v))]:: is kinematic viscosity (<<iso80000-4>>),\nstem:[l]:: is characteristic length (<<iso80000-3>>), the scale of the phenomenon,\nstem:[omega_\"E\"]:: is angular frequency (<<iso80000-3>>) of the Earth's rotation, and\nstem:[varphi]:: is angle of latitude\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-11> ;
  skos:note "In plasma physics, the square root of this number is used.\n\nThe Ekman number is also given by\n\nstem:[Ek = Ro//Re]; where\n\nstem:[Ro]:: is the Rossby number (<<t11-4.20>>), and\nstem:[Re]:: is the Reynolds number (<<t11-4.1>>).\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-11:ed-2:en:item:11-4.21> .