Abstract
Wall temperature as well as the temperature distribution within or close-by the boundary layer of an electrically heated axisymmetric jet impinging on a flat plate were monitored to deduce wall-normal temperature gradients. The radial surface temperature profile of the plate was determined by coating it with thermographic phosphors (TPs), materials whose phosphorescence decay time is dependent on their temperature. The TP was excited electronically by a frequency-tripled Nd:YAG laser (355 nm) and the temporal decay of the phosphorescence intensity was measured zero-dimensionally by a photomultiplier tube. In this case the 659-nm emission line of Mg3F2GeO4:Mn was monitored. The non-intrusive measurement of gas temperatures near the surface was performed two-dimensionally by filtered Rayleigh scattering (FRS). A tunable frequency-tripled single-longitudinal-mode alexandrite laser beam at 254 nm was formed into a light sheet pointing parallel to the surface. The scattered light was imaged through a very narrow linewidth atomic mercury filter onto an intensified charged coupled device (ICCD). The elastic stray light from surfaces was strongly suppressed, whereas Doppler-broadened light was detected. Thermographic phosphors proved to be reliable for the measurement of surface temperatures. Dependent on the specific experimental conditions, problems appeared with signals interfering with the FRS radiation close-by the surface. Results and challenges of this approach are discussed.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
D.J. Bizzak, M.K. Chyu, Int. J. Heat Mass Transf. 38, 267 (1994)
L.C. Kwok, C.W. Leung, C.S. Cheung, Exp. Heat Transf. 16, 111 (2003)
Z. Zhao, T.T. Wong, C.W. Leung, Int. J. Heat Mass Transf. 47, 5021 (2004)
S.G. Tuttle, B.W. Webb, M.Q. McQuay, Int. J. Heat Mass Transf. 48, 1236 (2005)
S.W. Allison, G.T. Gillies, Rev. Sci. Instrum. 68, 2615 (1997)
B.W. Noel, H.M. Borella, W. Lewis, W.D. Turley, D.L. Beshears, G.J. Capps, M.R. Cates, J.D. Muhs, K.W. Tobin, Trans. ASME 113, 242 (1991)
K.W. Tobin, S.W. Allison, M.R. Cates, G.J. Capps, D.L. Beshears, M. Cyr, B.W. Noel, AIAA J. 28, 1485 (1990)
S.W. Allison, M.R. Cates, B.W. Noal, G.T. Gillies, IEEE Trans. Instrum. Meas. 37, 637 (1988)
J.P. Feist, A.L. Heyes, S. Seefelt, Proc. Inst. Mech. Eng. 217, 193 (2003)
A. Omrane, F. Ossler, M. Aldén, U. Görannson, G. Holmstedt, in Proc. 7th Int. Symp. Fire Safety Science, 2002, pp. 141–152
A. Omrane, F. Ossler, M. Aldén, Proc. Combust. Inst. 29, 2653 (2002)
A. Omrane, F. Ossler, M. Aldén, J. Svenson, J.B.C. Pettersson, Fire Mater. 29, 39 (2005)
T. Husberg, S. Girja, I. Denbratt, A. Omrane, M. Aldén, J. Engström, SAE Tech. Paper 2005-01-1646
R.B. Miles, J.N. Forkey, W.R. Lempert, AIAA Paper 92, 3894 (1992)
D. Hofmann, K.U. Münch, A. Leipertz, Opt. Lett. 21, 525 (1996)
G.S. Elliott, N. Glumac, C.D. Carter, Meas. Sci. Technol. 12, 452 (2001)
D. Most, A. Leipertz, Appl. Opt. 40, 5379 (2001)
A.P. Yalin, Y.Z. Ionikh, R.B. Miles, Appl. Opt. 41, 3753 (2002)
J. Zetterberg, Z.S. Li, M. Afzelius, M. Aldén, in Proc. Eur. Combustion Meet. (2003)
Author information
Authors and Affiliations
Corresponding author
Additional information
PACS
07.20.Dt; 32.50.+d; 44.20.+b; 42.65.Es; 33.20.Fb
Rights and permissions
About this article
Cite this article
Brübach, J., Zetterberg, J., Omrane, A. et al. Determination of surface normal temperature gradients using thermographic phosphors and filtered Rayleigh scattering. Appl. Phys. B 84, 537–541 (2006). https://doi.org/10.1007/s00340-006-2243-9
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00340-006-2243-9