N. Sreenivasalu Reddy This email address is being protected from spambots. You need JavaScript enabled to view it.1, Vishwanath K. C.1 , Satheesha V.1 , Thejaraju R.2 , Karthik Raj N.1 , Manoj M. 1 , Goutham H.1 , and Manjunatha B. S.1

1Department of Mechanical Engineering, Rajarajeswari College of Engineering, Bangalore, 560074, India Affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, India
2Department of Mechanical and Automobile Engineering, CHRIST Deemed to be University, Bangalore, 560074, India


 

Received: August 10, 2020
Accepted: March 23, 2021
Publication Date: August 1, 2021

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.6180/jase.202108_24(4).0019  


ABSTRACT


The present work aims to investigate the effect of different configurations of the tube-in-tube helically coiled heat exchanger. Commercial CFD codes were used to predict the fluid flow and heat transfer in a tube-in-tube helical heat exchanger. The model of different configurations of the inner tube has been simulated by varying the Dean number. The numerical results are verified and found to be in good agreement with reported data in the literature. Nusselt Number and friction factor are evaluated for different angular positions. The use of geometry E increases the Nusselt number and friction factor by 19.05% and 16% respectively at a Dean number of 4000 as compared with a circular tube as compared with the circular tube.


Keywords: Heat exchanger; Dean number; Nusselt number; Friction factor


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