0
Research Papers: Gas Turbines: Turbomachinery

Effect of Temperature on Microparticle Rebound Characteristics at Constant Impact Velocity—Part I

[+] Author and Article Information
J. M. Delimont

Department of Mechanical Engineering,
Virginia Tech,
Blacksburg, VA 24061
e-mail: jacob.delimont@swri.org

M. K. Murdock

Department of Mechanical Engineering,
Virginia Tech,
Blacksburg, VA 24061
e-mail: murdockm@vt.edu

W. F. Ng

Department of Mechanical Engineering,
Virginia Tech,
Blacksburg, VA 24061
e-mail: wng@vt.edu

S. V. Ekkad

Department of Mechanical Engineering,
Virginia Tech,
Blacksburg, VA 24061
e-mail: sekkad@vt.edu

Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received January 21, 2015; final manuscript received March 12, 2015; published online May 12, 2015. Assoc. Editor: Klaus Brun.

J. Eng. Gas Turbines Power 137(11), 112603 (Nov 01, 2015) (9 pages) Paper No: GTP-15-1021; doi: 10.1115/1.4030312 History: Received January 21, 2015; Revised March 12, 2015; Online May 12, 2015

Many gas turbine engines operate in harsh environments where the engines ingest solid particles. Ingested particles accelerate the deterioration of engine components and reduce the engine's service life. Understanding particle impacts on materials used in gas turbines at representative engine conditions leads to improved designs for turbomachinery operating in particle-laden environments. Coefficient of restitution (COR) is a measure of particle/wall interaction and is used to study erosion and deposition. In this study, the effect of temperature (independent of velocity) on COR was investigated. Arizona road dust (ARD) of 20–40 μm size was injected into a flow field to measure the effects of temperature and velocity on particle rebound. Target coupon materials used were Stainless Steel 304 (SS304) and Hastelloy X (HX). Tests were performed at three different temperatures: 300 K (ambient), 873 K, and 1073 K. The velocity of the flow field was held constant at 28 m/s. The impingement angle of the bulk sand on the coupon was varied from 30 deg to 80 deg for each temperature tested. The COR was found to decrease substantially from the ambient case to the 873 K and 1073 K cases. The HX material exhibits a larger decrease in COR than the SS304 material. The results are also compared to previously published literatures. The decrease in COR is believed to be due to the changes in the surface of both materials due to oxide layer formation which occurs as the target material is heated.

FIGURES IN THIS ARTICLE
<>
Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.

References

Goldsmith, W., 2002, Impact: The Theory and Physical Behaviour of Colliding Solids, Dover Publications, Mineola, NY.
Tabakoff, W., Grant, G., and Ball, R., 1974, “An Experimental Investigation of Certain Aerodynamic Effects on Erosion,” AIAA Paper No. 74-639. [CrossRef]
Li, X., Dunn, P. F., and Brach, R. M., 2000, “Experimental and Numerical Studies of Microsphere Oblique Impact With Planar Surfaces,” Aerosol Sci. Technol., 31(5), pp. 583–594. [CrossRef]
Sommerfeld, M., and Huber, N., 1999, “Experimental Analysis and Modelling of Particle-Wall Collisions,” Int. J. Multiphase Flow, 25(6–7), pp. 1457–1489. [CrossRef]
Mok, C. H., and Duffy, J., 1964, “The Behaviour of Metals at Elevated Temperatures Under Impact With a Bouncing Ball,” Int. J. Mech. Sci., 6(2), pp. 161–175. [CrossRef]
Brenner, S. S., Wriedt, H. A., and Oriani, R. A., 1981, “Impact Adhesion of Iron at Elevated Temperatures,” Wear, 68(2), pp. 169–190. [CrossRef]
Tabakoff, W., 1991, “Measurements of Particles Rebound Characteristics on Materials Used in Gas Turbines,” J. Propul. Power, 7(5), pp. 805–813. [CrossRef]
Tabakoff, W., Hamed, A., and Murugan, D. M., 1996, “Effect of Target Materials on the Particle Restitution Characteristics for Turbomachinery Application,” J. Propul. Power, 12(2), pp. 260–266. [CrossRef]
Wakeman, T., and Tabakoff, W., 1979, “Erosion Behavior in a Simulated Jet Engine Environment,” J. Aircr., 16(12), pp. 828–833. [CrossRef]
Hamad, A., and Tabakoff, W., 1994, “Experimental and Numerical Simulation of the Effects of Ingested Particles in Gas Turbine Engines,” Erosion, Corrosion and Foreign Object Damage Effects in Gas Turbines, Propulsion and Energetics Panel (PEP) Symposium, Rotterdam, The Netherlands, Apr. 25–28, AGARD-CP-558, Paper No. 11.
Reagle, C., Delimont, J., Ng, W., Ekkad, S., and Rajendran, V., 2013, “Measuring the Coefficient of Restitution of High Speed Microparticle Impacts Using a PTV and CFD Hybrid Technique,” Meas. Sci. Technol., 24(10), p. 105303. [CrossRef]
Reagle, C. J., Delimont, J., Ng, W. F., and Ekkad, S. V., 2014, “Study of Microparticle Rebound Characteristics Under High Temperature Conditions,” ASME J. Eng. Gas Turbines Power, 136(1), p. 011501. [CrossRef]
Delimont, J. M., Murdock, M. K., Ng, W. F., and Ekkad, S. V., 2014, “Effect of Near Melting Temperatures on Microparticle Sand Rebound Characteristics at Constant Impact Velocity,” ASME Paper No. GT2014-25686. [CrossRef]
Nealy, D., Mihelc, M., Hylton, L., and Gladden, H., 1984, “Measurements of Heat Transfer Distribution Over the Surfaces of Highly Loaded Turbine Nozzle Guide Vanes,” ASME J. Eng. Gas Turbines Power, 106(1), pp. 149–158. [CrossRef]
Hylton, L., Nirmalan, V., Sultanian, B., and Kaufman, R., 1988, “The Effects of Leading Edge and Downstream Film Cooling on Turbine Vane Heat Transfer,” NASA Lewis Research Center, Cleveland, OH, NASA Report No. CR-182133. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890004383.pdf
Reagle, C., 2012, “Technique for Measuring the Coefficient of Restitution for Microparticle Sand Impacts at High Temperature for Turbomachinery Applications,” Ph.D. dissertation, Virginia Tech, Blacksburg, VA.
Morrison, F. A., 2013, “Data Correlation for Drag Coefficient for Sphere,” Department of Chemical Engineering, Michigan Technological University, Houghton, MI.
Hinkley, D. V., 1969, “On the Ratio of Two Correlated Normal Random Variables,” Biometrika, 56(3), pp. 635–639. [CrossRef]
Wright, I. G., Nagarajan, V., and Stringert, V., 1986, “Observations on the Role of Oxide Scales in High-Temperature Erosion-Corrosion of Alloys,” Oxid. Met., 25(3/4), pp. 175–199. [CrossRef]

Figures

Grahic Jump Location
Fig. 1

V-22 Osprey (Department of Defense)

Grahic Jump Location
Fig. 2

Diagram of incoming and rebounding particle trajectories

Grahic Jump Location
Fig. 3

VT Aerothermal Rig

Grahic Jump Location
Fig. 4

Schematic of instrumentation setup

Grahic Jump Location
Fig. 5

Particle tracks generated by the Lagrangian particle tracking algorithm

Grahic Jump Location
Fig. 6

Power law curve fit and raw data for the mean COR

Grahic Jump Location
Fig. 7

Plot of COR versus angle of impact for SS304 and HX

Grahic Jump Location
Fig. 8

Plot of normal COR versus angle of impact for SS304 and HX

Grahic Jump Location
Fig. 9

Plot of tangential COR versus angle of impact for SS304

Grahic Jump Location
Fig. 10

Plot of ambient COR versus angle of impact comparison to literature

Grahic Jump Location
Fig. 11

Plot of ambient normal COR versus angle of impact comparison to literature

Grahic Jump Location
Fig. 12

Plot of ambient tangential COR versus angle of impact comparison to literature

Tables

Errata

Discussions

Related

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In