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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Goehring, Michael Hartmann, Christopher Wolfersdorf, Jens Von |
| Copyright Year | 2018 |
| Abstract | A smooth two-pass internal gas turbine cooling channel is numerically investigated. Transient conjugated non-rotating and rotating URANS simulations are executed. The transient thermochromic liquid crystal (TLC) approach is supported with these simulations as the temporally changing rotational buoyancy effects can be examined. The Reynolds number is 25,000, the rotation number is 0.24 and the initial buoyancy number is 0.63 (according to an inlet-to-wall density ratio of 0.23). As heat is transferred, the temperatures and heat fluxes change with increasing time, and so do the local buoyancy effects. The computational results are evaluated as averaged segmental values. They are compared to the experimental results from literature that have been determined for constant wall temperature experiments (various experimental runs with different constant wall temperatures). Especially in the first passage, there is a good agreement between the numerically gained results and the experimental data. The more complex flow inside the bend leads to more diverse characteristics and the second passage is only slightly effected. |
| Sponsorship | International Gas Turbine Institute |
| File Format | |
| ISBN | 9780791851081 |
| DOI | 10.1115/GT2018-76497 |
| Volume Number | Volume 5A: Heat Transfer |
| Conference Proceedings | ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition |
| Language | English |
| Publisher Date | 2018-06-11 |
| Publisher Place | Oslo, Norway |
| Access Restriction | Subscribed |
| Subject Keyword | Temperature Cooling Reynolds number Buoyancy Transient heat transfer Rotation Density Flow (dynamics) Liquid crystals Transients (dynamics) Wall temperature Heat Gas turbines Simulation Flux (metallurgy) Engineering simulation |
| Content Type | Text |
| Resource Type | Article |
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