exported
equivalent
restriction orifice
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Restrictionorifice
Generated on 2026-04-13
Natural Language Definition
EN
A restriction orifice is a flow modification accessory that bears the function to restrict fluid flow by creating controlled pressure drop through geometric constriction.
PT-BR
Um orifício de restrição é um acessório de modificação de fluxo que possui a função de restringir o fluxo de fluido criando queda de pressão controlada através de constrição geométrica.
Formal Axioms
Semi-formal (Aristotelian)
Every restriction orifice is a flow modification accessory that bears a flow restriction function
First-Order Logic Theory
Loading…
▸ Stored override
∀x(RestrictionOrifice(x) ↔ FlowModificationAccessory(x) ∧ ∃f(FlowRestrictionFunction(f) ∧ bearerOf(x,f)))
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix : <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix bfo: <http://purl.obolibrary.org/obo/> .
@prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> .
@prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix apv: <http://inf.ufrgs.br/ontologies/apv#> .
### COPI — Core Ontology for Petroleum Installations
### Class module: RestrictionOrifice
<https://www.inf.ufrgs.br/ontologies/copi>
rdf:type owl:Ontology ;
dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ;
dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ;
dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ;
skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ;
skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ;
skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ;
skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ;
owl:versionInfo "1.1.0" ;
owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ;
owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ;
dcterms:creator "Nicolau Oyhenard dos Santos"@en ;
dcterms:contributor "Cauã Antunes" ;
dcterms:contributor "Haroldo Rojas" ;
dcterms:contributor "Rafael Petry" ;
dcterms:contributor "Régis Romeu" ;
dcterms:contributor "Mara Abel" ;
dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ;
dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ;
dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
dcterms:created "2026-04-08"^^xsd:date ;
dcterms:modified "2026-10-08"^^xsd:date ;
apv:GlobalMinLanguageCoverage "en pt-br" ;
apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ;
apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" .
iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ;
apv:MinAnnotationLength 20 .
### Identity-giving function
:COPI_0000163 rdf:type owl:Class ; # FlowRestrictionFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000525 # FlowRestrictionProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000525 # FlowRestrictionProcess
] ;
rdfs:label "flow restriction function"@en ;
rdfs:label "função de restrição de fluxo"@pt-br .
### Process type
:COPI_0000525 rdf:type owl:Class ; # FlowRestrictionProcess
rdfs:subClassOf :COPI_0000010 ; # FlowControl
rdfs:label "flow restriction process"@en ;
rdfs:label "processo de restrição de fluxo"@pt-br .
:COPI_0000010 rdf:type owl:Class . # FlowControl
:COPI_0000525 # FlowRestrictionProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] .
### Equipment universal: RestrictionOrifice
:COPI_0000146 rdf:type owl:Class ; # RestrictionOrifice
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
:COPI_0000083 # FlowModificationAccessory
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000163 # FlowRestrictionFunction
]
)
] ;
rdfs:label "restriction orifice"@en ;
rdfs:label "orifício de restrição"@pt-br ;
iof-av:naturalLanguageDefinition "A restriction orifice is a flow modification accessory that bears the function to restrict fluid flow by creating controlled pressure drop through geometric constriction."@en ;
skos:definition "A restriction orifice is a flow modification accessory that bears the function to restrict fluid flow by creating controlled pressure drop through geometric constriction."@en ;
iof-av:naturalLanguageDefinition "Um orifício de restrição é um acessório de modificação de fluxo que possui a função de restringir o fluxo de fluido criando queda de pressão controlada através de constrição geométrica."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every restriction orifice is a flow modification accessory that bears a flow restriction function"@en ;
iof-av:firstOrderLogicAxiom "∀x(RestrictionOrifice(x) ↔ FlowModificationAccessory(x) ∧ ∃f(FlowRestrictionFunction(f) ∧ bearerOf(x,f)))"@en ;
skos:definition "[ISO 15926-4] A <RESTRICTION ORIFICE> is a <FLOW MODIFICATION ACCESSORY> that is intended for use as a restrictor"@en .
# Disjointness: RestrictionOrifice and FlowMeter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000146 :COPI_0000278 ) . # RestrictionOrifice, FlowMeter
Axiomatization Decision Log
1
Identity-Giving Function
Function class
FlowRestrictionFunction
⊑ DesignedFunction
Realized in
FlowRestrictionProcess
⊑ FlowControl
The identity-giving function is to restrict fluid flow by creating a controlled pressure drop. This is distinct from flow control (which modulates flow) and is specifically about creating resistance to flow through geometric constriction.
2
Genus Determination
FlowModificationAccessory
The ISO definition explicitly states that a restriction orifice is a FLOW MODIFICATION ACCESSORY. This is the most specific superclass provided. Since this genus is not in the enriched classes list, it would be a MaterialArtifact (causally unified flow-modifying component without removable subparts).
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
These are the minimal essential parts - a plate structure and the aperture(s) that create the restriction. Mounting hardware and flanges vary by application.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— higher pressure upstream
Outputs (O)
PortionOfFluid
— lower pressure downstream due to restriction
Transformation (T)
pressure energy dissipation through geometric constriction
Single input stream experiences pressure drop through the restriction, creating a lower pressure output stream. The transformation is irreversible energy dissipation.
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
Disjointness Axioms
FlowMeter
C4: FlowMeter. FlowMeter signature includes measurement output signal; PressureRegulator maintains constant downstream pressure rather than creating fixed restriction
Cross-Standard Observations
Only ISO 15926 provides definition. The concept appears well-established with clear functional identity. Subtypes indicate variations in aperture configuration (single/multi-hole) but same core function.