Two approaches to modelling high-pressure discharge lamps are discussed. 'Spectral' models attempt to predict a spectrum based on a one-dimensional (radial) treatment of the discharge with detailed atomic and molecular physics and radiative transport, but neglect two- and three-dimensional effects. 'Energy transport' models aim to predict the temperature distribution and flow patterns throughout the discharge tube in three dimensions, but simplify radiative transport and do not address the spectral prediction. The current trend of using commercially available modelling packages as the basis for three-dimensional lamp models is considered. Further progress will probably involve general energy transport models including heat transfer, fluid flow, electrical, magnetic and chemical effects; and local models to deal with more specialised phenomena such as electrode damage.
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References
1.
van den Hoek W J. and Jack A.G.Lamps in Ullmann's Encyclopaedia of Industrial Chemistry Vol. A15 pp 115-150 (VCH Verlag) (1990)
2.
Church C H. et al. Studies of highly radiative plasmas using the wall-stabilised pulsed arc dischargeAIAA J.4(11) 1947-1953 (1966)
3.
Lowke J J.A relaxation method of calculating arc temperature profiles applied to discharges in sodium vapourJ. Quant. Spectrosc. Rad. Transp.9(6) 839-854 (1969)
4.
Shaffner R O.Theoretical properties of several metal halide arcs assumingLTE Proc. Inst. Elect. Electron. Eng. 59(4) 622-628 (1971)
5.
Speros D.M. et al. Thermodynamic and Kinetic Considerations pertaining to Molecular ArcsHigh Temp. Sci.4(1) 99-127 (1972)
6.
de Groot J J PhD Thesis Technical Univ. Eindhoven (1974)
7.
Waymouth J F.An elementary arc model of the high pressure sodium lampJ. Illum. Eng. Soc. 6(3) 131-140 (1977)
8.
Wharmby D.O.Scientific aspects of the high pressure sodium lamp Proc. Inst. Elec. Eng.A127(3) 165-172 (1980)
9.
Jones B.F. and Mottram D.A J A semi-empirical formula to describe the net emission coefficients of self-absorbed spectral lines for use in modelling high pressure discharge lampsJ. Phys. D: Appl. Phys.14(7) 1183-1194 (1981)
10.
Dakin J.T. and Gilliard R.P.Energy balance of the high pressure mercury discharge with sodium and scandium iodide additivesJ. Appl. Phys. 62(1) 79-87 (1987)
11.
Mottram D A J, Cifuentes L. and Mucklejohn S.A.Development and application of a 1-D model of a metal halide discharge lamp with detailed spectral predictionsProc. 5th Int. Symp. Sci. and Technol. Light Sources, York (1989)
12.
Zollweg R.J.Convection in vertical high pressure mercury arcsJ. Appl. Phys. 49(3) 1077-1091 (1978)
13.
Lowke J.J.Calculated properties of vertical arcs stabilized by natural convectionJ. Appl. Phys. 50(1) 147-157 (1979)
14.
Stormberg H.P.Axial and radial segregation in metal halide arcsJ. Appl. Phys. 52(5) 3233-3237 (1981)
15.
Zollweg R.J. et al. A radiation and convection model of the vertical mercury arc containing sodium and scandium iodidesJ. Appl. Phys.52(5) 3293-3303 (1981)
16.
Fischer E.The electrode regions of high pressure gas dischargesProc. 17th Int. Conf. Phenom. Ionized Gases, Budapest (1985)
17.
Wei Shyy and Dakin J.T.3-dimensional natural convection in a high pressure mercury discharge lampProc. 5th Int. Conf. Numer. Methods in Thermal Problems, Montreal (1987)
18.
Dakin J.T. et al. Anatomy of a vertical metal halide dischargeJ. Appl. Phys.66(9) 4074-4088 (1989)
19.
Dakin J.T. and Wei ShyyThe prediction of convective and additive demixing in vertical high pressure mercury arcsJ. Electrochem. Soc.136(4) 1210-1215 (1989)
20.
Fischer E. and Schnedler E.Chemical and physical modelling of metal halide discharges—today and tomorrowProc. 5th Int. Symp. Sci. Technol. Light Sources, York (1989)
21.
Dakin J.T.Predicting high pressure discharge performanceProc. 5th Int. Symp. Sci. and Technol. Light Sources, York (1989)
22.
Vicharelli P.A. and Fohl T.Computational fluid dynamics of high intensity arcsProc. 5th Int. Symp. Sci. Technol. Light Sources, York (1989)
23.
Cifuentes L., Mottram D A J and Vasquez-Malebran S A Acomputer model of a high pressure discharge lamp based on the FLUENT codeProc. 5th Int. Symp. Sci. Technol. Light Sources, York (1989 )
24.
Cifuentes L.Computer predictions of flow patterns and temperature contours in high pressure discharge lampsProc. 5th Int. Symp. Sci. Technol. Light Sources, York (1989)
25.
Cifuentes L. and Mottram D A J3-dimensional computer predictions of a high pressure discharge lampProc. 5th Int. Symp. Sci. Technol. Light Sources, York (1989)
26.
Wei Shyy and Chang P.Y.Effects of convection and electric field in thermofluid transport in horizontal high pressure mercury dischargesJ. Appl. Phys.67(4) 1712-1719 (1990)
27.
Chang P.Y. et al. A study of 3-dimensional natural convection in high pressure mercury lamps Part IInt. J. Heat Mass Transfer33(3) 483-493 (1990)
28.
Wei Shyy and Chang P.Y A study of 3-dimensional natural convection in high pressure mercury lamps Part IIInt. J. Heat Mass Transfer33(3) 495-506 (1990)
29.
Cifuentes L.Validation of a 3-dimensional computer model of a high pressure dischargelamp Proc. 43rd Annual Gaseous Electronics Conf , Champaign-Urbana, Illinois (1990)
30.
30 Cifuentes L et al. A 3-D model of energy transport in a high pressure discharge lamp To be published
31.
Rutan D.M. and Mathews P.G.Thermal modeling of high pressure sodium arc tubesJ. Illum. Eng. Soc. 18(1) 29-36 (1989)
32.
Kovitya P. and LowkeJ J Two dimensional analysis of free burning arcs in argonJ. Phys. D: Appl. Phys.18(1) 53-70 (1985)
33.
Chang P.Y. and Dakin J.T.Effects of rotation and magnetic field on a high pressure mercury arcProc 43rd Annual Gaseous Electronics Conf, Champaign-Urbana, Illinois (1990 )
34.
Cayless M.A.Radiation transport in high pressure discharge lamps, in Radiative Processes in Discharge Plasmas (Proud J M and Luessen L H, eds). NATO ASI Series, Series B: Physics, Vol. 149 (New York: Plenum) (1986)
35.
de Groot J. and van Vliet J.A.The high pressure sodium lamp (Eindhoven: Philips Technical Library) (1986)
36.
Wharmby D.O.Molecular spectral intensities in LTE plasmas, in Radiative Processes in Discharge Plasmas (Proud J M and Luessen L H, eds.) NATO ASI Series, Series B: Physics Vol. 149, ( New York: Plenum) (1986)
37.
van Zeggeren F. and Storey S.H.The computation of chemical equilibria pp 69-72 (Cambridge: CUP) (1970 )
38.
National Bureau of Standards, Washington DCJANAF Thermochemical Tables3rd edn (2 vols.) J. Phys. Chem. Ref. Data 14 Supplement 1 (1985)
39.
Hirschfelder J.O. et al. Molecular theory of gases and liquids (New York: Wiley) ( 1954)
40.
Reader J. et al. Wavelengths and transition probabilities for atoms and atomic ionsNSRDS-NBS publication 68 ( Washington DC: Dept. of Commerce) ( 1980)
41.
Griem H.R.Plasma Spectroscopy (New York: McGraw Hill) (1964)
42.
Cifuentes L., Forsdyke G.M. and O'Brien N.W.Corrosion of tungsten in metal halide lamps submitted to Corros. Sci. (1991)
43.
Guile A E.Arc-electrode phenomena Proc. IEE, IEE Reviews118(9R) 1131-1154 (1971 )
