Unsteady 3-D RANS simulations have been performed on a highly
loaded transonic turbine stage and results are compared to steady
calculations as well as to experiment. A low Reynolds number
k-epsilon turbulence model is employed to provide closure for the
RANS system. A phase-lag boundary condition is used in the
tangential direction. This allows the unsteady simulation to be
performed by using only one blade from each of the two rows. The
objective of this work is to study the effect of unsteadiness on
rotor heat transfer and to glean any insight into unsteady flow
physics. The role of the stator wake passing on the pressure
distribution at the leading edge is also studied. The simulated
heat transfer and pressure results agreed favorably with
experiment. The time-averaged heat transfer predicted by the
unsteady simulation is higher than the heat transfer predicted by
the steady simulation everywhere except at the leading edge. The
shock structure formed due to stator-rotor interaction was
analyzed. Heat transfer and pressure at the hub and casing were
also studied. Thermal segregation was observed that leads to the
heat transfer patterns predicted by steady and unsteady simulations
to be different.
General
Imprint: |
Bibliogov
|
Country of origin: |
United States |
Release date: |
June 2013 |
First published: |
June 2013 |
Authors: |
Vikram Shyam
|
Dimensions: |
246 x 189 x 2mm (L x W x T) |
Format: |
Paperback - Trade
|
Pages: |
42 |
ISBN-13: |
978-1-289-03573-0 |
Categories: |
Books >
Social sciences >
Politics & government >
General
|
LSN: |
1-289-03573-3 |
Barcode: |
9781289035730 |
Is the information for this product incomplete, wrong or inappropriate?
Let us know about it.
Does this product have an incorrect or missing image?
Send us a new image.
Is this product missing categories?
Add more categories.
Review This Product
No reviews yet - be the first to create one!