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A Robust Finite Element Modeling Approach to Conjugate Heat Transfer in Flexible Elastic Tubes and Tube Networks / A Coccarelli, Perumal Nithiarasu, Alberto Coccarelli

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, Volume: 67, Pages: 513 - 530

Swansea University Authors: Perumal Nithiarasu, Alberto Coccarelli

DOI (Published version): 10.1080/10407782.2014.937284

Abstract

In this work, heat transfer between fluid flow in elastic tubes and external environment is modeled using a robust finite element approach. The transport of energy is coupled to fluid flow that is linked to the pressure and cross-sectional area variations of the tube. The novel model developed is ap...

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Published in: NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
Published: 2015
URI: https://cronfa.swan.ac.uk/Record/cronfa20250
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spelling 2019-07-31T08:36:55.9046535 v2 20250 2015-03-02 A Robust Finite Element Modeling Approach to Conjugate Heat Transfer in Flexible Elastic Tubes and Tube Networks 3b28bf59358fc2b9bd9a46897dbfc92d 0000-0002-4901-2980 Perumal Nithiarasu Perumal Nithiarasu true false 06fd3332e5eb3cf4bb4e75a24f49149d 0000-0003-1511-9015 Alberto Coccarelli Alberto Coccarelli true false 2015-03-02 CIVL In this work, heat transfer between fluid flow in elastic tubes and external environment is modeled using a robust finite element approach. The transport of energy is coupled to fluid flow that is linked to the pressure and cross-sectional area variations of the tube. The novel model developed is applied to flow and heat transfer in elastic tubes with different geometric and material properties. The effects of reflections due to discontinuities and bifurcations in the tubes are also investigated. To determine the heat transport by conduction in the elastic walls, a radial heat conduction model is also incorporated. The coupled flow equations are solved using the locally conservative Galerkin finite element method, which provides an explicit element-wise conservation of fluxes. Several simulations are performed for different parametric variations to understand the relevant aspects of heat transfer in flexible elastic tubes. The results show that small temperature fluctuations are possible, inline with the pulsatile flow boundary conditions. It is also observed that increased flexibility of tubes leads to better heat transfer between the fluid and the wall. The results clearly indicate that any flow reflections also increase the heat transfer between the fluid and the wall. Journal Article NUMERICAL HEAT TRANSFER PART A-APPLICATIONS 67 513 530 31 12 2015 2015-12-31 10.1080/10407782.2014.937284 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University 2019-07-31T08:36:55.9046535 2015-03-02T16:18:49.8161051 College of Engineering Engineering A Coccarelli 1 Perumal Nithiarasu 0000-0002-4901-2980 2 Alberto Coccarelli 0000-0003-1511-9015 3 0020250-21062015150437.pdf nht-final.pdf 2015-06-21T16:24:08.6330000 Output 522009 application/pdf Accepted Manuscript true 2015-06-21T00:00:00.0000000 true
title A Robust Finite Element Modeling Approach to Conjugate Heat Transfer in Flexible Elastic Tubes and Tube Networks
spellingShingle A Robust Finite Element Modeling Approach to Conjugate Heat Transfer in Flexible Elastic Tubes and Tube Networks
Perumal, Nithiarasu
Alberto, Coccarelli
title_short A Robust Finite Element Modeling Approach to Conjugate Heat Transfer in Flexible Elastic Tubes and Tube Networks
title_full A Robust Finite Element Modeling Approach to Conjugate Heat Transfer in Flexible Elastic Tubes and Tube Networks
title_fullStr A Robust Finite Element Modeling Approach to Conjugate Heat Transfer in Flexible Elastic Tubes and Tube Networks
title_full_unstemmed A Robust Finite Element Modeling Approach to Conjugate Heat Transfer in Flexible Elastic Tubes and Tube Networks
title_sort A Robust Finite Element Modeling Approach to Conjugate Heat Transfer in Flexible Elastic Tubes and Tube Networks
author_id_str_mv 3b28bf59358fc2b9bd9a46897dbfc92d
06fd3332e5eb3cf4bb4e75a24f49149d
author_id_fullname_str_mv 3b28bf59358fc2b9bd9a46897dbfc92d_***_Perumal, Nithiarasu
06fd3332e5eb3cf4bb4e75a24f49149d_***_Alberto, Coccarelli
author Perumal, Nithiarasu
Alberto, Coccarelli
author2 A Coccarelli
Perumal Nithiarasu
Alberto Coccarelli
format Journal article
container_title NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
container_volume 67
container_start_page 513
publishDate 2015
institution Swansea University
doi_str_mv 10.1080/10407782.2014.937284
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
active_str 0
description In this work, heat transfer between fluid flow in elastic tubes and external environment is modeled using a robust finite element approach. The transport of energy is coupled to fluid flow that is linked to the pressure and cross-sectional area variations of the tube. The novel model developed is applied to flow and heat transfer in elastic tubes with different geometric and material properties. The effects of reflections due to discontinuities and bifurcations in the tubes are also investigated. To determine the heat transport by conduction in the elastic walls, a radial heat conduction model is also incorporated. The coupled flow equations are solved using the locally conservative Galerkin finite element method, which provides an explicit element-wise conservation of fluxes. Several simulations are performed for different parametric variations to understand the relevant aspects of heat transfer in flexible elastic tubes. The results show that small temperature fluctuations are possible, inline with the pulsatile flow boundary conditions. It is also observed that increased flexibility of tubes leads to better heat transfer between the fluid and the wall. The results clearly indicate that any flow reflections also increase the heat transfer between the fluid and the wall.
published_date 2015-12-31T03:34:54Z
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score 10.830003