Matches in SemOpenAlex for { <https://semopenalex.org/work/W2910969881> ?p ?o ?g. }
Showing items 1 to 74 of
74
with 100 items per page.
- W2910969881 abstract "Multiphase flows are encountered in many engineering problems. Particularly in the oil and gas industry, many applications involve the transportation of a mixture of oil and natural gas in long pipelines from offshore platforms to the continent. Numerical simulations of steady and unsteady flows in pipelines are usually based on one-dimensional models, such as the two-fluid model, the drift-flux model and the homogeneous equilibrium model. The 1991’s version of the well-known and widely-used commercial software OLGA describes a system of non-linear equations of the two-fluid-model type, with an extra equation for the presence of liquid droplets. It is well known that one-dimensional formulations may be physically inconsistent due to the loss of hyperbolicity. In these cases, the associated eigenvalues become complex numbers and the model loses physical meaning locally. This paper presents a numerical study of the 1991’s version of the software OLGA, for an isothermal flow of stratified pattern, in a horizontal pipeline. For each point of interest in the stratified-pattern flow map, the eigenvalues are numerically calculated in order to verify if the eigenvalues are real and also to assess their signs. The results indicate that the model is conditionally hyperbolic and loses hyperbolicity in a vast area of the stratified region under certain flow conditions. Even though the model is not unconditionally hyperbolic, some simulations here performed for typical offshore pipeline flows are shown to be in the hyperbolic region." @default.
- W2910969881 created "2019-01-25" @default.
- W2910969881 creator A5002864646 @default.
- W2910969881 creator A5015067836 @default.
- W2910969881 creator A5023870014 @default.
- W2910969881 creator A5034240745 @default.
- W2910969881 creator A5047023251 @default.
- W2910969881 creator A5051594674 @default.
- W2910969881 creator A5068409266 @default.
- W2910969881 date "2018-11-09" @default.
- W2910969881 modified "2023-10-11" @default.
- W2910969881 title "A Hyperbolicity Analysis of the 1991 OLGA’s Model for Isothermal Flow" @default.
- W2910969881 doi "https://doi.org/10.1115/imece2018-87513" @default.
- W2910969881 hasPublicationYear "2018" @default.
- W2910969881 type Work @default.
- W2910969881 sameAs 2910969881 @default.
- W2910969881 citedByCount "0" @default.
- W2910969881 crossrefType "proceedings-article" @default.
- W2910969881 hasAuthorship W2910969881A5002864646 @default.
- W2910969881 hasAuthorship W2910969881A5015067836 @default.
- W2910969881 hasAuthorship W2910969881A5023870014 @default.
- W2910969881 hasAuthorship W2910969881A5034240745 @default.
- W2910969881 hasAuthorship W2910969881A5047023251 @default.
- W2910969881 hasAuthorship W2910969881A5051594674 @default.
- W2910969881 hasAuthorship W2910969881A5068409266 @default.
- W2910969881 hasConcept C121332964 @default.
- W2910969881 hasConcept C127313418 @default.
- W2910969881 hasConcept C127413603 @default.
- W2910969881 hasConcept C158693339 @default.
- W2910969881 hasConcept C175309249 @default.
- W2910969881 hasConcept C196558001 @default.
- W2910969881 hasConcept C199360897 @default.
- W2910969881 hasConcept C2776310255 @default.
- W2910969881 hasConcept C28826006 @default.
- W2910969881 hasConcept C33923547 @default.
- W2910969881 hasConcept C38349280 @default.
- W2910969881 hasConcept C41008148 @default.
- W2910969881 hasConcept C43521106 @default.
- W2910969881 hasConcept C57879066 @default.
- W2910969881 hasConcept C62520636 @default.
- W2910969881 hasConcept C78519656 @default.
- W2910969881 hasConceptScore W2910969881C121332964 @default.
- W2910969881 hasConceptScore W2910969881C127313418 @default.
- W2910969881 hasConceptScore W2910969881C127413603 @default.
- W2910969881 hasConceptScore W2910969881C158693339 @default.
- W2910969881 hasConceptScore W2910969881C175309249 @default.
- W2910969881 hasConceptScore W2910969881C196558001 @default.
- W2910969881 hasConceptScore W2910969881C199360897 @default.
- W2910969881 hasConceptScore W2910969881C2776310255 @default.
- W2910969881 hasConceptScore W2910969881C28826006 @default.
- W2910969881 hasConceptScore W2910969881C33923547 @default.
- W2910969881 hasConceptScore W2910969881C38349280 @default.
- W2910969881 hasConceptScore W2910969881C41008148 @default.
- W2910969881 hasConceptScore W2910969881C43521106 @default.
- W2910969881 hasConceptScore W2910969881C57879066 @default.
- W2910969881 hasConceptScore W2910969881C62520636 @default.
- W2910969881 hasConceptScore W2910969881C78519656 @default.
- W2910969881 hasLocation W29109698811 @default.
- W2910969881 hasOpenAccess W2910969881 @default.
- W2910969881 hasPrimaryLocation W29109698811 @default.
- W2910969881 hasRelatedWork W1969247494 @default.
- W2910969881 hasRelatedWork W2000127148 @default.
- W2910969881 hasRelatedWork W2006008393 @default.
- W2910969881 hasRelatedWork W2061421551 @default.
- W2910969881 hasRelatedWork W2323929379 @default.
- W2910969881 hasRelatedWork W2325667722 @default.
- W2910969881 hasRelatedWork W285684711 @default.
- W2910969881 hasRelatedWork W3100851742 @default.
- W2910969881 hasRelatedWork W3155555350 @default.
- W2910969881 hasRelatedWork W3209114185 @default.
- W2910969881 isParatext "false" @default.
- W2910969881 isRetracted "false" @default.
- W2910969881 magId "2910969881" @default.
- W2910969881 workType "article" @default.