Panesar, JS, Heggs, PJ, Burns, AD et al. (2 more authors) (2015) Predictions of Heat Transfer and Flow Circulations in Differentially Heated Liquid Columns With Applications to Low-Pressure Evaporators. Heat Transfer Engineering, 36 (14-15). 1177 - 1191. ISSN 0145-7632
Abstract
Numerical computations are presented for the temperature and velocity distributions of two differentially heated liquid columns with liquor depths of 0.1 m and 2.215 m, respectively. The temperatures in the liquid columns vary considerably with respect to position for pure conduction, free convection, and nucleate boiling cases using one-dimensional (1D) thermal resistance networks. In the thermal resistance networks the solutions are not sensitive to the type of condensing and boiling heat transfer coefficients used. However, these networks are limited and give no indication of velocity distributions occurring within the liquor. To alleviate this issue, two-dimensional (2D) axisymmetric and three-dimensional (3D) computational fluid dynamics (CFD) simulations of the test rigs have been performed. The axisymmetric conditions of the 2D simulations produce unphysical solutions; however, the full 3D simulations do not exhibit these behaviors. There is reasonable agreement for the predicted temperatures, heat fluxes, and heat transfer coefficients when comparing the boiling case of the 1D thermal resistance networks and the CFD simulations.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2015 Taylor & Francis. This is an Accepted Manuscript of an article published by Taylor & Francis in Heat Transfer Engineering on 6 April 2015, available online: http://dx.doi.org/10.1080/01457632.2015.994459. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Oct 2015 13:28 |
Last Modified: | 17 Jan 2018 00:24 |
Published Version: | http://dx.doi.org/10.1080/01457632.2015.994459 |
Status: | Published |
Publisher: | Taylor & Francis |
Identification Number: | 10.1080/01457632.2015.994459 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:85931 |