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NUMERICAL SIMULATION OF THE FLOW FIELD STRUCTURE OF LIQUID NITROGEN JET

ABSTRACT
Liquid nitrogen jet is regarded as an excellent technology for the well drilling and reservoir fracturing. To evaluate the flow field structure of liquid nitrogen jet, a 2-D CFD model is established. The transient velocity and temperature fields of liquid nitrogen jet is simulated. The results show that the liquid nitrogen jet also clearly presented the velocity boundary and potential core region similar to the water jet. Given the temperature difference between the jet and surrounding fluid, the liquid nitrogen jet has an obvious temperature boundary, on which the jet temperature is equal to the initial value. According to the phase of the jet, the flow structure can be divided into the liquid nitrogen jet and non-liquid nitrogen jet regions. The temperature boundary shows a larger width than the velocity boundary for liquid nitrogen jet. Moreover, both width and length of the liquid nitrogen jet region are greater than the potential core region.
KEYWORDS
PAPER SUBMITTED: 2018-05-11
PAPER REVISED: 2018-06-01
PAPER ACCEPTED: 2018-08-10
PUBLISHED ONLINE: 2019-04-14
DOI REFERENCE: https://doi.org/10.2298/TSCI180511131C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE 3, PAGES [1337 - 1343]
REFERENCES
  1. Li, G., et al., Research and applications of novel jet techniques in well drilling, completion and fracturing, Science Foundation in China, 22(2014), 2, pp. 68-80.
  2. Lai F., et al., Impact of water blocking in fractures on the performance of hydraulically fractured horizontal wells in tight gas reservoir, Journal of Petroleum Science and Engineering, 156(2017), pp. 134-141.
  3. Zhang R., et al., Environmentally friendly hydraulic fracturing and water-free fracturing technologies, International Journal of Oil Gas & Coal Technology, 17(2018), 4, pp. 375-390.
  4. Boudet H., et al., "Fracking" controversy and communication: Using national survey data to understand public perceptions of hydraulic fracturing. Energy Policy, 65(2014), pp. 57-67.
  5. Cai C., et al., Particle velocity distributions of abrasive liquid nitrogen jet and parametric sensitivity analysis. Journal of Natural Gas Science and Engineering, 27(2015), Part 3, pp. 1657-1666.
  6. Wu X., et al., Investigation on the damage of high-temperature shale subjected to liquid nitrogen cooling. Journal of Natural Gas Science and Engineering, 57(2018), pp. 284-294.
  7. Cai C., et al., Numerical simulation on the flow field characteristics and impact capability of liquid nitrogen jet. Energy Exploration & Exploitation, 36(2018), 5, pp. 989-1005.
  8. Wu X., et al., Experiment on coal breaking with cryogenic nitrogen jet, Journal of Petroleum Science and Engineering, 169(2018), pp. 405-415.
  9. Gao F., et al., Experimental research on rock fracture failure characteristics under liquid nitrogen cooling conditions, Results in Physics, 9(2018), pp. 252-262.
  10. Cai C., et al., Downhole transient flow field and heat transfer characteristics during drilling with liquid nitrogen jet, Journal of Energy Resources Technology-Transactions of The ASME, 140(2018), 12, pp. 122902.
  11. Span R.., et al., A reference equation of state for the thermodynamic properties of nitrogen for temperatures from 63.151 to 1000 K and pressures to 2200 MPa, Journal of Physical and Chemical Reference Data, 29(2000), 6, pp. 1361-1433.
  12. Lemmon E.W., et al., Viscosity and thermal conductivity equations for nitrogen, oxygen, argon, and air, International Journal of Thermophysics, 25(2004), 1, pp. 21-69.

© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence