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Aerodynamic investigation of turbine cooled vane block

Content Provider	Springer Nature Link
Author	Mamaev, B. I. Saha, R. Fridh, J.
Copyright Year	2015
Abstract	The vane block (VB) has been investigated and it gives several important results related to test methods and calculation procedures. The vane block is characterized by a developed film and convective cooling system. Blowing tests demonstrate that there is a weak correlation between cooling type and energy loss. Superposition of these effects is true for the central part over VB height without secondary flows. Coolant discharge increases profile loss and it rises if coolant flow rate is increased. Discharge onto profile convex side through the trailing edge slot influences the most considerably. The discharge through perforation decreases the vane flow capacity and insufficiently influences onto the flow outlet angle, but the trailing edge discharge increases this angle according to loss and mixture flow rate growth. The secondary flows reduce the effect of coolant discharge, which insufficiently changes losses distribution at turbine blades tips and even decreases the secondary losses. The flow outlet angle rises significantly and we are able to calculate it only if we correct the ordinary flow model. In the area of secondary flows, the outlet angle varies insufficiently under any type of cooling. This area should be investigated additionally.
Starting Page	97
Ending Page	102
Page Count	6
File Format	PDF
ISSN	00406015
Journal	Thermal Engineering
Volume Number	62
Issue Number	2
e-ISSN	15556301
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-01-07
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	coolant flow rate loss factor outlet flow angle flows Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Nuclear Energy and Engineering

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