The understanding of the heat transfer and flow field behavior of rotating systems is essential from a fundamental point of view and for turbo machinery design. The majority of the publications considers enclosed rotating disk systems and only little is known about the convective heat transfer of free rotating disk systems in a forced flow. In this paper, a free rotating disk system, with particular look on the angle of incidence was investigated. The convective heat transfer from a rotating disk depends at least on three characteristic variables, namely the crossflow, rotational Reynolds numbers and the angle of incidence which are determining the mean Nusselt number. A clear study of the symmetry behavior of the flow field was conducted based on the measurement of the convective heat transfer coefficients. The angle of incidence was scanned with high angular resolution over the entire range between the both extreme cases of a perpendicular disk and a disk in a parallel forced flow. A large number of crossflow and rotational Reynolds numbers were covered by the experiments, too. Based on the experimental and theoretical results, a discussion of the different phenomena and heat transfer regimes is given in this paper.
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ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
June 16–20, 2014
Düsseldorf, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4572-1
PROCEEDINGS PAPER
Convective Heat Transfer From a Free Rotating Disk Subjected to a Forced Crossflow
Christian Helcig,
Christian Helcig
Muenster University of Applied Sciences, Steinfurt, Germany
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Stefan aus der Wiesche
Stefan aus der Wiesche
Muenster University of Applied Sciences, Steinfurt, Germany
Search for other works by this author on:
Christian Helcig
Muenster University of Applied Sciences, Steinfurt, Germany
Stefan aus der Wiesche
Muenster University of Applied Sciences, Steinfurt, Germany
Paper No:
GT2014-26223, V05BT14A012; 9 pages
Published Online:
September 18, 2014
Citation
Helcig, C, & aus der Wiesche, S. "Convective Heat Transfer From a Free Rotating Disk Subjected to a Forced Crossflow." Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 5B: Heat Transfer. Düsseldorf, Germany. June 16–20, 2014. V05BT14A012. ASME. https://doi.org/10.1115/GT2014-26223
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