Hydrodynamic and thermal characteristics study of cooling structure (IIC) for eco-gas turbine engine blade
Higher inlet temperature of gas turbine increases the thermal performance, requiring the operating temperature to be higher that the allowable blade material temperature. Study on advance cooling technique is required to fulfil the increasing demand on lugher performance turbine system. The present...
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| Main Authors: | , , , , , , |
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| Format: | Thesis |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/6895/ http://eprints.uthm.edu.my/6895/1/FRGS_0724.pdf |
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| Summary: | Higher inlet temperature of gas turbine increases the thermal performance, requiring
the operating temperature to be higher that the allowable blade material temperature.
Study on advance cooling technique is required to fulfil the increasing demand on
lugher performance turbine system. The present study deals with numerical
simulation on an advanced Integrated Impingement Cooling (IIC) system. The IIC
integrates the conventional film cooling (external cooling) with internal cooling,
which comprises of cool jet impingement on inner blade wall (the target plate) and
structural pins that act as fins. Overall cooling performance of four (4) newly
proposed IIC configurations including two (2) configurations by Funazaki and
Hamidon (2008) have been investigated through unsteady three-dimensional
numerical simulation of RANS with k-E turbulence model via commercial CFD
package, FLUENT. The numerical results show good agreement with experimental
data of Funazaki and Harnidon (2008). It is concluded that the inner pin
configuration does not affect the adiabatic cooling performance at the outer wall.
However the pin configuration does affect the internal cooling performance,
consequently the overall cooling performance. It is observed that STAGS offers the
best overall performance of the six configurations studied. |
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