Change search
ReferencesLink to record
Permanent link

Direct link
Experimental flow and performance investigations of cavity purge flows in a high pressure turbine stage
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.ORCID iD: 0000-0002-1033-9601
2015 (English)In: 11th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2015, European Conference on Turbomachinery (ETC) , 2015Conference paper (Refereed)
Abstract [en]

A high pressure turbine stage has been investigated from the aspect of flow and performance impact associated with cavity purge. Performance is referred to as the operating parameters of the turbine, mainly based on the continuous output torque monitoring. The flow parameters were studied through measurements featuring temperature and pressure throughout the flow path, as well as in the cavity. Purge and main flow velocities were quantified in the vane exit section, and degree of sealing based on purge-amount correlations and pressure readings. Results were related to turbine efficiency based on a simple correlation, and also entropy generation. Change of operating point was found to have a significant effect on degree of sealing, while the change of efficiency was found to be linear with respect to relative purge rate and independent of operating point.

Place, publisher, year, edition, pages
European Conference on Turbomachinery (ETC) , 2015.
Keyword [en]
Entropy, Fluid dynamics, Gas turbines, Thermodynamics, Turbomachinery, Entropy generation, High pressure turbine stage, Operating parameters, Operating points, Performance impact, Pressure reading, Temperature and pressures, Turbine efficiency, Turbines
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-194668ScopusID: 2-s2.0-84983133986OAI: oai:DiVA.org:kth-194668DiVA: diva2:1050740
Conference
11th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2015, 23 March 2015 through 27 March 2015
Note

QC 20161130

Available from: 2016-11-30 Created: 2016-10-31 Last updated: 2016-11-30Bibliographically approved

Open Access in DiVA

No full text

Scopus

Search in DiVA

By author/editor
Dahlqvist, Johan E.Fridh, Jens
By organisation
Heat and Power Technology
Mechanical Engineering

Search outside of DiVA

GoogleGoogle Scholar

Total: 5 hits
ReferencesLink to record
Permanent link

Direct link