Creator:
Rashed, Musaab K. ; Jehhef, Kadhum Audaa ; Badawy, Faris Ali
Contributor:
Title:
Numerical study on thermal performance of water flow in a twisted duct heat exchanger
Group publication title:
Subject and Keywords:
mixed convection ; twisted square duct ; heat exchanger ; laminar flow
Abstract:
This paper presents a numerical study of heat transfer through a downstream annulus using water as the working fluid within the laminar flow region. The annulus consisted of an outer twisted square duct and an inner circular pipe. A three-dimensional formulation was used to solve the Navier-Stokes equations numerically for the laminar flow system with a low Reynolds number. ; The results were illustrated as a profile of the thermal enhancement factor, the friction factor and the Nusselt number. The results show that the twisted outer duct of the heat exchanger can create a swirl flow along the length of the heat exchanger. It also caused a boundary layer separation-reattachment on the wall of the inner pipe.
Publisher:
Zielona Góra: Uniwersytet Zielonogórski
Date:
Resource Type:
Format:
DOI:
Pages:
Source:
IJAME, volume 27, number 2 (2022)