Publication:
Estimation of pulsatile energy dissipation in intersecting pipe junctions using inflow pulsatility indices

dc.contributor.coauthorDur, Onur
dc.contributor.departmentDepartment of Mechanical Engineering
dc.contributor.departmentGraduate School of Health Sciences
dc.contributor.kuauthorPekkan, Kerem
dc.contributor.kuauthorRasooli, Reza
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF HEALTH SCIENCES
dc.date.accessioned2024-11-09T13:45:25Z
dc.date.issued2021
dc.description.abstractThis study aims to characterize the effect of inflow pulsatility on the hydrodynamic power loss inside intersecting double-inlet, double-outlet pipe intersection (DIPI) with cross-flow mixing. An extensive set of computational fluid dynamics (CFD) simulations was performed in order to identify the individual effects of flow pulsatility parameters, i.e., amplitude, frequency, and relative phase shift between the inflow waveform oscillations, on power loss. An experimentally validated second order accurate solver is employed in this study. To predict the pulsatile flow performance of any given arbitrary inflow waveforms, we proposed three easy-to-calculate pulsatility indices. The frequency-coupled quasi-steady flow theory is incorporated to identify the functional form of pulsatile power loss as a function of these indices. Our results indicated that the power loss within the inflow branch sections, lumped outflow-junction section, and the whole conduit correlates strongly with the pulsatility of each inflow waveform, the total inflow pulsatility, and inflow frequency content, respectively. The complete CFD simulation matrix provided a unified analytical expression that predicts pulsatile power loss inside a one-degree offset DIPI geometry. The predictive accuracy of this expression is evaluated in comparison to the CFD evaluation of arbitrary multi-harmonic inflow waveforms. These results have important implications on hydrodynamic pipe networks that employ complex junctions as well as in the patient-to-patient comparison of surgically created vascular connections. Coupling the present analytical pulsatile power loss expression with non-dimensional steady power loss formulation provided a valuable predictive tool to estimate the pulsatile energy dissipation for any arbitrary junction geometry with minimum use of the costly CFD computations.
dc.description.fulltextYES
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue1
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuTÜBİTAK
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TÜBİTAK)
dc.description.versionPublisher version
dc.description.volume11
dc.identifier.doi10.1063/5.0014450
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR02710
dc.identifier.issn2158-3226
dc.identifier.quartileQ4
dc.identifier.scopus2-s2.0-85100007947
dc.identifier.urihttps://doi.org/10.1063/5.0014450
dc.identifier.wos630450400008
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP) Publishing
dc.relation.grantno118M369
dc.relation.grantno118S108
dc.relation.ispartofAIP Advances
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/9356
dc.subjectScience and technology
dc.subjectMaterials science
dc.subjectPhysics
dc.titleEstimation of pulsatile energy dissipation in intersecting pipe junctions using inflow pulsatility indices
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorPekkan, Kerem
local.contributor.kuauthorRasooli, Reza
local.publication.orgunit1GRADUATE SCHOOL OF HEALTH SCIENCES
local.publication.orgunit1College of Engineering
local.publication.orgunit2Department of Mechanical Engineering
local.publication.orgunit2Graduate School of Health Sciences
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