Heat transfer augmentation in gas turbine blade rectangular passages using circular ribs with fins
Joint Authors
Husayn, Hasan Qahtan
Rashid, Farhan Laftah
al-Jabburi, Muhammad Wahhab
Source
Journal of University of Babylon for Engineering Sciences
Issue
Vol. 26, Issue 1 (31 Jan. 2018), pp.247-258, 12 p.
Publisher
Publication Date
2018-01-31
Country of Publication
Iraq
No. of Pages
12
Main Subjects
Abstract EN
In this paper, an experimental system was designed and built to simulate conditions in the gas turbine blade cooling and run the experimental part.
Boundary conditions are: inlet coolant air temperature is 300K with Reynolds numbers (Re=7901) .The surrounding constant hot air temperatures was (673 K).The numerical simulations were done by using software FLUENT version (14.5), in this part, it was presented the effect of using circular ribs having middle fin fitted in rectangular passage channel on fluid flow and heat transfer characteristics.
Ribs used with pitch-rib height of 10, rectangular channel of (30x60 mm) cross section, 1.5 mm duct thickness and 0.5 m long.
The temperature, velocity distribution contours, cooling air temperature distribution at the duct centerline, the inner wall surface temperature of the duct, and thermal performance factor are presented in this paper.
it can be seen that the duct with all ribs with middle fins was the better case which leads to increase the coolant air temperature by (10.22 %) and decrease the inner wall temperature by (6.15 % ).
The coolant air flow velocity seems to be accelerated and decelerated through the channel in the presence of ribs, so it was shown that the thermal performance factor along the duct is larger than 1, this is due to the fact that the ribs create turbulent conditions and increasing thermal surface area, and thus increasing heat transfer coefficient than the smooth channel.
American Psychological Association (APA)
al-Jabburi, Muhammad Wahhab& Rashid, Farhan Laftah& Husayn, Hasan Qahtan. 2018. Heat transfer augmentation in gas turbine blade rectangular passages using circular ribs with fins. Journal of University of Babylon for Engineering Sciences،Vol. 26, no. 1, pp.247-258.
https://search.emarefa.net/detail/BIM-918135
Modern Language Association (MLA)
al-Jabburi, Muhammad Wahhab…[et al.]. Heat transfer augmentation in gas turbine blade rectangular passages using circular ribs with fins. Journal of University of Babylon for Engineering Sciences Vol. 26, no. 1 (2018), pp.247-258.
https://search.emarefa.net/detail/BIM-918135
American Medical Association (AMA)
al-Jabburi, Muhammad Wahhab& Rashid, Farhan Laftah& Husayn, Hasan Qahtan. Heat transfer augmentation in gas turbine blade rectangular passages using circular ribs with fins. Journal of University of Babylon for Engineering Sciences. 2018. Vol. 26, no. 1, pp.247-258.
https://search.emarefa.net/detail/BIM-918135
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 257-258
Record ID
BIM-918135