Next Article in Journal
Comparison of How Graphite and Shungite Affect Thermal, Mechanical, and Dielectric Properties of Dielectric Elastomer-Based Composites
Next Article in Special Issue
Effect of Blockage Inside Holes on Film Cooling Performance on the Suction Side of a Turbine Guide Vane
Previous Article in Journal
Fouling Mitigation of Ion Exchange Membranes in Energy Conversion Devices
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Energies
Volume 15
Issue 1
10.3390/en15010148
energies-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Effects of High Buoyancy Parameter on Flow and Heat Transfer of Two-Pass Smooth/Ribbed Channels

by
Wenbin He
1,
Ke Zhang
1,
Junmei Wu
1,
Jiang Lei
1,*,
Pengfei Su
2,* and
Yu Fang
2
1
State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, China
2
Dongfang Turbine Co. Ltd., Deyang 618000, China
*
Authors to whom correspondence should be addressed.
Energies 2022, 15(1), 148; https://doi.org/10.3390/en15010148
Submission received: 29 November 2021 / Revised: 14 December 2021 / Accepted: 17 December 2021 / Published: 27 December 2021
(This article belongs to the Special Issue Analysis and Optimization of Cooling Performance in Gas Turbines)
Browse Figures
Versions Notes

Abstract

In order to deepen the understanding of rotating effects on internal cooling, the flow and heat transfer characteristics of 2-pass rotating rectangular smooth/ribbed channels are investigated by Reynolds-Averaged Navier-Stokes (RANS) simulation. Three rotating numbers (Ro = 0.10, 0.25, and 0.40) are simulated, and the maximum buoyancy parameter (Bo) reaches 5.0. The results show that the rotating buoyancy has significant effects on the flow and heat transfer under high Bo conditions. When Bo > 1.0, rotating buoyancy inducts flow separation near the leading edge (LE) in the first passage, while the air flow in the second passage shows a double-peak profile. With increased Bo, the heat transfer in the first passage is greatly increased, and the maximum growth rate occurs at Bo = 0.6~1.0. However, the heat transfer in the second passage has no obvious changes due to a strong turn effect. In the ribbed channel, rotating effects are much weaker than those in the smooth channel. This research helps to improve the understanding of the internal cooling heat transfer mechanism in land-based gas turbines under typical operating conditions.
Keywords: rotating; RANS; SST k-ω turbulence model; buoyancy parameter; smooth/ribbed channels rotating; RANS; SST k-ω turbulence model; buoyancy parameter; smooth/ribbed channels

Share and Cite

MDPI and ACS Style

He, W.; Zhang, K.; Wu, J.; Lei, J.; Su, P.; Fang, Y. Effects of High Buoyancy Parameter on Flow and Heat Transfer of Two-Pass Smooth/Ribbed Channels. Energies 2022, 15, 148. https://doi.org/10.3390/en15010148

AMA Style

He W, Zhang K, Wu J, Lei J, Su P, Fang Y. Effects of High Buoyancy Parameter on Flow and Heat Transfer of Two-Pass Smooth/Ribbed Channels. Energies. 2022; 15(1):148. https://doi.org/10.3390/en15010148

Chicago/Turabian Style

He, Wenbin, Ke Zhang, Junmei Wu, Jiang Lei, Pengfei Su, and Yu Fang. 2022. "Effects of High Buoyancy Parameter on Flow and Heat Transfer of Two-Pass Smooth/Ribbed Channels" Energies 15, no. 1: 148. https://doi.org/10.3390/en15010148

APA Style

He, W., Zhang, K., Wu, J., Lei, J., Su, P., & Fang, Y. (2022). Effects of High Buoyancy Parameter on Flow and Heat Transfer of Two-Pass Smooth/Ribbed Channels. Energies, 15(1), 148. https://doi.org/10.3390/en15010148

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop