000198230 001__ 198230
000198230 005__ 20190316235907.0
000198230 0247_ $$2doi$$a10.1115/1.4027250
000198230 022__ $$a0022-1481
000198230 02470 $$2ISI$$a000349231100005
000198230 037__ $$aARTICLE
000198230 245__ $$aHole Staggering Effect on the Cooling Performance of Narrow Impingement Channels Using the Transient Liquid Crystal Technique
000198230 269__ $$a2014
000198230 260__ $$bAmerican Society of Mechanical Engineers$$c2014
000198230 336__ $$aJournal Articles
000198230 520__ $$aThis study examines experimentally the cooling performance of narrow impingement channels as could be cast-in in modern turbine airfoils. Full surface heat transfer coefficients are evaluated for the target plate and the sidewalls of the channels using the transient liquid crystal technique. Several narrow impingement channel geometries, consisting of a single row of five cooling holes, have been investigated composing a test matrix of nine different models. The experimental data are analyzed by means of various post-processing procedures aiming to clarify and quantify the effect of cooling hole offset position from the channel centerline on the local and average heat transfer coefficients and over a range of Reynolds numbers (11,100–86,000). The results indicated a noticeable effect of the jet pattern on the distribution of convection coefficients as well as similarities with conventional multi-jet impingement cooling systems.
000198230 6531_ $$aheat transfer
000198230 6531_ $$aimpingement jets
000198230 6531_ $$acast-in turbine airfoils
000198230 6531_ $$ablade cooling
000198230 6531_ $$aliquid crystal thermography
000198230 700__ $$0243259$$g197108$$aTerzis, Alexandros
000198230 700__ $$aWagner, Guillaume
000198230 700__ $$avon Wolfersdorf, Jens
000198230 700__ $$g106017$$aOtt, Peter$$0240715
000198230 700__ $$aWeigand, Bernhard
000198230 773__ $$j136$$tTransactions- American Society of Mechanical Engineers Journal of Heat Transfer$$k7$$q071701 (1-9)
000198230 8564_ $$uhttps://infoscience.epfl.ch/record/198230/files/2014_Terzis_JHT.pdf$$zn/a$$s3915613$$yn/a
000198230 909C0 $$xU12401$$0252405$$pGTT
000198230 909CO $$ooai:infoscience.tind.io:198230$$qGLOBAL_SET$$pSTI$$particle
000198230 917Z8 $$x106017
000198230 917Z8 $$x106017
000198230 917Z8 $$x106017
000198230 917Z8 $$x106017
000198230 937__ $$aEPFL-ARTICLE-198230
000198230 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000198230 980__ $$aARTICLE