THE EFFECTS OF CIRCULAR INSERTS ON THE THERMAL AND FLOW CHARACTERISTICS IN A HORIZONTAL PIPE EXCHANGER: A NUMERICAL INVESTIGATION
Author:
YEŞİLYURT Muhammet Kaan1ORCID, ADIGÜZEL Nesrin1ORCID, YILDIRIM Orhan1ORCID, ÇOMAKLI Ömer1ORCID, AFSHARİ Faraz2ORCID
Affiliation:
1. ATATURK UNIVERSITY 2. ERZURUM TECHNICAL UNIVERSITY
Abstract
The aim of the present study was to numerically investigate the effects of circular inserts placed inside a circular tube in order to evaluate the heat transfer characteristics under different operating conditions. Computational Fluid Dynamics methods were used to solve the model, which is a heat pipe with an outer diameter of 21 mm equipped with circular inserts with a distance of 20 cm. Different mass flow rates of the heat transfer fluid, including 25, 50, 75, 100, and 125 g/s were examined, and the thermal behavior of the turbulators and the flow structure were investigated. R19.0 version of ANSYS Fluent software was used as the CFD program to obtain the desired results and contours. From the results, it was found that circular inserts can be used in heat pipes to produce vortices and thus improve the heat transfer.
Publisher
Kütahya Dumlupinar Üniversitesi
Reference40 articles.
1. [1] Min, C., Li, H., Gao, X., Wang, K., and Xie, L. (2021). Numerical investigation of convective heat transfer enhancement by a combination of vortex generator and in-tube inserts, International Communications in Heat and Mass Transfer, 127, 105490, doi: 10.1016/j.icheatmasstransfer.2021.105490. 2. [2] Sarada, S. N., Raju, A. V. Sita Rama, and Radha, K. K. (2010). Experimental numerical analysis enhancement of heat transfer in a horizontal circular tube using mesh inserts in turbulent region, European Journal of Mechanical and Environmental Engineering, 2, 3–18. [Online]. Available: http://www.bsmee.be/ejmee/ejmee20102.pdf 3. [3] Cao, Z., Wu, Z., Luan, H., and Sunden, B. (2017). Numerical study on heat transfer enhancement for laminar flow in a tube with mesh conical frustum inserts, Numerical Heat Transfer, Part A: Applications, 72, 1, 21–39, doi: 10.1080/10407782.2017.1353386. 4. [4] Mousa, M. H., Miljkovic, N., and Nawaz, K. (2021). Review of heat transfer enhancement techniques for single phase flows, Renewable and Sustainable Energy Reviews, 137, 110566, doi: 10.1016/j.rser.2020.110566. 5. [5] Jassim, N. A., Abdul Hussin, K., and Abdul Abbass, N. Y. (2017). Numerical investigation of Heat Transfer Enhancement in Circular Tube using Twisted Tape Inserts and Nanotechnology, ejuow, 5, 2, 42–54, doi: 10.31185/ejuow.Vol5.Iss2.57.
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