Study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction

In this study, the heat transfer and flow physics of Abdominal Aortic Aneurysm (AAA) were discussed and associated with cardiac cycle to illustrate the cardiac thermal pulse (CTP) of AAA. A CTP and IRT evaluation-based on AAA and abdomen skin surface detection method was proposed respectively. The i...

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Main Author: Looi, Jun Cong
Other Authors: Ng Yin Kwee
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2022
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Online Access:https://hdl.handle.net/10356/158801
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spelling sg-ntu-dr.10356-1588012022-05-24T23:57:19Z Study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction Looi, Jun Cong Ng Yin Kwee School of Mechanical and Aerospace Engineering MYKNG@ntu.edu.sg Engineering::Mathematics and analysis::Simulations Science::Physics::Heat and thermodynamics In this study, the heat transfer and flow physics of Abdominal Aortic Aneurysm (AAA) were discussed and associated with cardiac cycle to illustrate the cardiac thermal pulse (CTP) of AAA. A CTP and IRT evaluation-based on AAA and abdomen skin surface detection method was proposed respectively. The identification of AAA for each scenario was done by evaluating the CTP of abdominal aorta wall. Under regular body temperature, AAA of FSI Analysis did not have a CTP that responded to systole phase which shown in CFD rigid-body analysis. In contrast, the healthy abdominal aorta in CFD rigid-body analysis had a CTP which responded to the entire cardiac cycle, including diastolic phase. As the body experiences fever or stage-2 hypothermia, result from CFD rigid-body analysis indicates that the AAA wall would achieve thermal equilibrium, with blood temperature at a quasi-linear relationship. Yet, at the healthy abdominal aorta, there is CTP detected. Besides, from CFD rigid-body and FSI Analysis, the bioheat transfer effect resulted in a circular thermal elevation on the temperature profile of midriff skin surface patient, at both regular body temperature and supine position, under normal clinical temperature. These findings then correlated the relationship between natural convective heat transfer coefficient with AAA and provided reference for potential clinical diagnostic using infrared thermography (IRT). Bachelor of Engineering (Aerospace Engineering) 2022-05-23T05:04:16Z 2022-05-23T05:04:16Z 2022 Final Year Project (FYP) Looi, J. C. (2022). Study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/158801 https://hdl.handle.net/10356/158801 en B163 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mathematics and analysis::Simulations
Science::Physics::Heat and thermodynamics
spellingShingle Engineering::Mathematics and analysis::Simulations
Science::Physics::Heat and thermodynamics
Looi, Jun Cong
Study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction
description In this study, the heat transfer and flow physics of Abdominal Aortic Aneurysm (AAA) were discussed and associated with cardiac cycle to illustrate the cardiac thermal pulse (CTP) of AAA. A CTP and IRT evaluation-based on AAA and abdomen skin surface detection method was proposed respectively. The identification of AAA for each scenario was done by evaluating the CTP of abdominal aorta wall. Under regular body temperature, AAA of FSI Analysis did not have a CTP that responded to systole phase which shown in CFD rigid-body analysis. In contrast, the healthy abdominal aorta in CFD rigid-body analysis had a CTP which responded to the entire cardiac cycle, including diastolic phase. As the body experiences fever or stage-2 hypothermia, result from CFD rigid-body analysis indicates that the AAA wall would achieve thermal equilibrium, with blood temperature at a quasi-linear relationship. Yet, at the healthy abdominal aorta, there is CTP detected. Besides, from CFD rigid-body and FSI Analysis, the bioheat transfer effect resulted in a circular thermal elevation on the temperature profile of midriff skin surface patient, at both regular body temperature and supine position, under normal clinical temperature. These findings then correlated the relationship between natural convective heat transfer coefficient with AAA and provided reference for potential clinical diagnostic using infrared thermography (IRT).
author2 Ng Yin Kwee
author_facet Ng Yin Kwee
Looi, Jun Cong
format Final Year Project
author Looi, Jun Cong
author_sort Looi, Jun Cong
title Study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction
title_short Study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction
title_full Study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction
title_fullStr Study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction
title_full_unstemmed Study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction
title_sort study of bioheat transfer and cardiac thermal pulse of aneurysm in the abdominal aortic using computational fluid dynamic and fluid structure interaction
publisher Nanyang Technological University
publishDate 2022
url https://hdl.handle.net/10356/158801
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