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Experimental investigation of flow and heat transfer characteristics on matrix ribbed channel
journal contribution
posted on 2020-02-21, 14:46 authored by Bo Zhang, Quan Hong, Yuanyuan Dou, Honghu Ji, Rui ChenThe effect of the rib width to height ratio t/e and width to pitch ratio t/p on
the local heat transfer distribution in a rectangular matrix ribbed channel
with two opposite in line
o 45
ribs are experimentally investigated for
Reynolds Numbers from 54000 to 150000. The rib height to channel height
ratio e/H is 0.5, t/p and t/e both varies in range of 0.3-0.5. And to simulate
the actually situation in turbine blades, and provide useful direct results for
turbine blade designers, the parameters are same with the blade. The
experiments results show that, in comparison to fully developed flow in a
smooth pipe of equivalent hydraulic diameter, the Nusselt number inside the
matrix-ribbed rectangular channel is increased up to 5 to 9 times higher,
while total pressure drop is enlarged by up to significant magnitude. The
Nusselt number ratio increases with t/p and t/e increased. Semi-empirical
heat transfer is developed for designing of cooling channel.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Published in
Thermal ScienceIssue
00Pages
26 - 26Publisher
National Library of SerbiaVersion
- VoR (Version of Record)
Rights holder
© The AuthorPublisher statement
This is an Open Access Article. It is published by National Library of Serbia under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2020ISSN
0354-9836eISSN
2334-7163Publisher version
Language
- en
Depositor
Prof Rui Chen Deposit date: 20 February 2020Usage metrics
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