Skip to main content
SpringerLink
Log in

Rayleigh scattering temperature measurements in a plane turbulent air jet at moderate Reynolds numbers

  • Originals
  • Published:
Experiments in Fluids Aims and scope Submit manuscript

Abstract

Rayleigh scattering temperature measurements were made in a slightly heated plane jet at various Reynolds numbers and the effect of this parameter on the temperature field was determined. The axial and lateral distributions of the mean and rms temperature as well as the temperature spectra along the jet axis were determined. Results indicated that increasing Reynolds numbers led to lower levels of rms temperature and jet dilution in the moderate Reynolds number regime (between 700 and 2500). It was also found that slower spread rates of the thermal jet occured with larger Reynolds numbers in this regime.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Abbreviations

b T :

temperature half-width of the jet

C :

calibration constant for Rayleigh scattering optics

C T, C T,0 :

constants defining the temperature decay rate

D :

nozzle width

E T :

power spectrum of temperature fluctuations

f :

frequency

I L :

laser light intensity

I R :

Rayleigh signal intensity

K T, K T,0 :

constants defining the jet spread rate

k :

wavenumber (2πf/ U)

N :

total molecular number density

Re :

Reynolds number (U 0D/ν)

T :

mean excess temperature

T m :

mean excess temperature on the jet axis

T 0 :

mean excess temperature at jet exit

T′ :

fluctuating temperature

U :

local mean velocity

U 0 :

mean velocity at the jet exit

x :

axial distance from the nozzle exit

y :

lateral distance from the jet axis

z :

spanwise distance from the jet axis

Ω:

Rayleigh scattering cross section

ρ :

density

ν :

kinematic viscosity

References

  • Arcoumanis, C. 1985: A laser Rayleigh scattering system for scalar transport studies. Exp. Fluids 3, 103–108

    Google Scholar 

  • Bill, R. G., Jr.; Namer, I.; Talbot, L.; Robben, F. 1982: Density fluctuations of flame in grid induced turbulence. Combust. Flame 44, 277–285

    Google Scholar 

  • Bradbury, L. J. S. 1965: The structure of a self-preserving turbulent plane jet. J. Fluid Mech. 23, 31–64

    Google Scholar 

  • Davies, A. K.; Keffer, J. F.; Baines, W. D. 1975: Spread of a heated plane turbulent jet. Phys. Fluids 18, 405–410

    Google Scholar 

  • Dyer, T. M. 1979: Rayleigh scattering measurements of time-resolved concentration in a turbulent propane jet. AIAA J. 17, 912–914

    Google Scholar 

  • Gutmark, E.; Wygnansky, I. 1976: The planar turbulent jet. J. Fluid Mech. 73, 465–495

    Google Scholar 

  • Haskestad, G. 1965: Hot wire measurements in a plane turbulent jet. Trans ASME J. Appl. Mech. 32, 721–734

    Google Scholar 

  • Hussain, A. K. M. F.; Clark, A. R. 1977: Upstream influence on the near field of a plane turbulent jet. Phys. Fluids 20, 1416–1427

    Google Scholar 

  • Jenkins, P. E.; Goldschmidt, V. W. 1973: Mean temperature and velocity in a plane turbulent jet. Trans. ASME J. Fluids Eng. 95, 581–584

    Google Scholar 

  • Kotsovinos, N. E. 1975: A study of the entrainment and turbulence in a plane buoyant jet. Ph.D. Thesis, California Institute of Technology, Pasadena/CA, USA

    Google Scholar 

  • Kuhlman, J. M. 1985: Survey of nearfield Reynolds number effects and initial condition effects on buoyant and non-buoyant jets. ASME paper, presented at the International Symposium on Modelling Environmental Flows, Albuquerque/NM, USA, June 24–26

  • Namer, I.; Ötügen, M. V. 1988: Velocity measurements in a plane turbulent air jet at moderate Reynolds numbers. Exp. Fluids 6, 387–399

    Google Scholar 

  • Namer, I.; Schefer, R. W. 1985: Error estimates for Rayleigh scattering density and temperature measurements. Exp. Fluids 3, 1–9

    Google Scholar 

  • Pitts, W. M.; Kashiwagi, T. 1984: The application of laser-induced Rayleigh light scattering to the study of turbulence mixing. J. Fluid Mech. 141, 391–429

    Google Scholar 

  • Ramaprian, B. R.; Chandrasekhara, M. S. 1985: LDA Measurements in plane turbulent jets. ASME paper 85-FE-9, presented at Joint ASME/ASCE Applied Mechanics, Bioengineering and Fluids Engineering Conference, Albuquerque/NM, USA, June 24–26

  • Van deHulst, H. C. 1957: Light scattering by small particles. London: Chapmann & Hall

    Google Scholar 

  • Van DerHegge Zijnen, B. G. 1957: Measurements of the velocity distribution in a plane turbulent jet of air. Appl. Sci. Res. 7, 256–276

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Dept. of Mechanical and Aerospace Engineering, Arizona State University, 85287, Tempe, AZ, USA

    M. V. Ötügen

  2. Dept. of Mechanical Engineering and Mechanics, Drexel University, 19104, Philadelphia, PA, USA

    I. Namer

Authors
  1. M. V. Ötügen
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. I. Namer
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Ötügen, M.V., Namer, I. Rayleigh scattering temperature measurements in a plane turbulent air jet at moderate Reynolds numbers. Experiments in Fluids 6, 461–466 (1988). https://doi.org/10.1007/BF00196507

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00196507

Keywords

Search

Navigation