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master's thesis
Effects of rheological models of blood on the flow through an idealised stenosed artery
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2022. urn:nbn:hr:235:121688
Milanović, Matko
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Milanović, M. (2022). Effects of rheological models of blood on the flow through an idealised stenosed artery (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:121688

Milanović, Matko. "Effects of rheological models of blood on the flow through an idealised stenosed artery." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:235:121688

Milanović, Matko. "Effects of rheological models of blood on the flow through an idealised stenosed artery." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:235:121688

Milanović, M. (2022). 'Effects of rheological models of blood on the flow through an idealised stenosed artery', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 06 August 2024, https://urn.nsk.hr/urn:nbn:hr:235:121688

Milanović M. Effects of rheological models of blood on the flow through an idealised stenosed artery [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2022 [cited 2024 August 06] Available at: https://urn.nsk.hr/urn:nbn:hr:235:121688

M. Milanović, "Effects of rheological models of blood on the flow through an idealised stenosed artery", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:235:121688

Metadata
TitleEffects of rheological models of blood on the flow through an idealised stenosed artery
Title (croatian)Utjecaj reoloških modela krvi na strujanje kroz idealiziranu stenozu arterije
AuthorMatko Milanović
MentorŽeljko Tuković (mentor)
MentorPeter De Jaeger https://orcid.org/0000-0003-3398-6833 (komentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2022-07-21, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Process Energy Engineering
Abstract
Coronary artery disease is a common and serious disease which is a consequence of plaque build-up in the coronary arteries. As a result, the artery cross-sectional area is reduced which restricts the blood flow. In this study, a numerical analysis of the blood flow through an idealised stenosed artery is presented. The effects of rheological models of blood on the flow characteristics is studied. Blood is modeled as a Newtonian, a generalized Newtonian and a viscoelastic fluid. For generalized Newtonian fluid modelling, the Carreau-Yasuda model is used. For viscoelastic fluid modelling, the simplified Phan-Thien-Tanner (sPTT) model is used. Flow is studied as steady and transient for three different stenosis geometries at Reynolds number values of 50 and 200. Results show that the Carreau-Yasuda model predicts the smallest boundary layer size and significantly lesser velocity magnitudes at the artery axis in comparison to the other models. The differences between model predictions are more noticeable when the stenosis is more severe and at higher velocities.
Abstract (croatian)
Koronarna bolest srca je česta i ozbiljna bolest koja nastaje kao posljedica nakupljanja plaka na koronarnim arterijama. Uzrokuje smanjenje površine poprečnog presjeka arterije što otežava protok krvi. U ovom radu napravljena je numerička analiza strujanja krvi kroz idealiziranu stenotičnu arteriju. Analiziran je utjecaj reološkog modela krvi na strujne karakteristike. Krv je modelirana kao Newtonovski, generalizirani Newtonovski te viskoelastični fluid. Za modeliranje generaliziranog Newtonovskog fluida korišten je Carreau-Yasuda model, a za modeliranje viskoelastičnog fluida korišten je pojednostavljeni Phan-Thien–Tanner (sPTT) model. Proučavano je stacionarno i nestacionarno strujanje za tri različite geometrije stenoze pri vrijednostima Reynoldsovog broja 50 i 200. Rezultati pokazuju da Carreau-Yasuda model predviđa najmanji granični sloj i znatno manje magnitude brzina u osi arterije u usporedbi s ostalim modelima. Razlike između modela su primjetnije kada je stenoza veća te pri većim brzinama strujanja.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:235:121688
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2022-07-10 20:12:58