THERMAL SCIENCE

International Scientific Journal

External Links

REAL TIME NUMERICAL SIMULATION OF THERMAL CONDUCTIVITY OF MARINE GAS TURBINE LUBRICATING OIL UNDER COMPLEX SEA CONDITIONS

ABSTRACT
Due to the influence of the marine environment, marine gas turbine lubricants are required to have good thermal conductivity. However, the current research on marine gas turbine lubricants mainly focuses on its corrosion resistance. Therefore, a real-time numerical simulation of thermal conductivity of marine gas turbine lubricating oil under complex sea conditions is proposed. In this paper, the turbulent kinetic energy equation and the loss transport equation are obtained by introducing the turbulent column and the k-e model. The Nusselt number in the k-e model can be regarded as the ratio of convective heat transfer between fluid and solid wall and internal heat transfer of fluid. According to the equations, the transient heat transfer model of vertical moving contact parts is established, and the heat transfer relationship between lubricating oil and plug group is obtained. The experimental results show that the area of low temperature in this scheme is larger than that in the traditional scheme, which means that the efficiency of impingement cooling is improved after the introduction of the pin structure in the impingement cooling design. The heat transfer process on the suction surface is stronger than that on the pressure surface, and the heat transfer coefficient of the blade increases continuously, reaching the local maximum value at about X/L = 0.65.
KEYWORDS
PAPER SUBMITTED: 2021-01-14
PAPER REVISED: 2021-07-07
PAPER ACCEPTED: 2021-07-10
PUBLISHED ONLINE: 2021-10-17
DOI REFERENCE: https://doi.org/10.2298/TSCI2106075X
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4075 - 4081]
REFERENCES
  1. Delgado-Torres, A. M., The Effects of the Ideal Gas Model with Constant Heat Capacities on Fuel Efficiency Optimization of the Open-Cycle Gas Turbine, Energy Conversion and Management, 195 (2019), 1, pp. 198-209
  2. Yang, Y., et al., Large Eddy Simulation Calculated Flame Dynamics of One F-Class Gas Turbine Combustor, Fuel, 261 (2020), Feb., 116451
  3. Vaferi, K., et al., Thermo-Mechanical Simulation of Ultrahigh Temperature Ceramic Composites as Alternative Materials for Gas Turbine Stator Blades, Ceramics International, 47 (2020), 1, pp.567-580
  4. Han, Y., et al., Lattice Boltzmann Method Simulation of the Gas Heat Conduction of Nanoporous Material, Thermal Science, 24 (2019), 6A, pp. 3749-3756
  5. Salpingidou, C., et al., Numerical Assessment of the Performance of a Heat Exchanger for a Low Pressure Ratio Gas Turbine, Energy, 164 (2018), 1, pp. 171-182
  6. Moghanlou, F. S., et al., Numerical Analyses of Heat Transfer and Thermal Stress in A ZrB2 Gas Turbine Stator Blade, Ceramics International, 45 (2019), 14, pp. 17742-17750
  7. Du, H. F., et al., Conjugate Heat Transfer Investigation on Swirl-Film Cooling at the Leading Edge of a Gas Turbine Vane, Entropy, 21 (2019), 10, p. 1007
  8. Dabwan, Y. N., et al., A Novel Integrated Solar Gas Turbine Trigeneration System for Production of Power, Heat and Cooling: Thermodynamic-Economic-Environmental Analysis, Renewable Energy, 152 (2020), 6, pp. 925-941
  9. Qahtan, H., et al., Heat Transfer Enhancement of Gas Turbine Blades Using Coated Ribs with Nanocomposite Materials, Journal of Mechanical Engineering Research and Developments, 43 (2020), 6, pp. 9-22
  10. Ahmed, A. H., et al., Energy-Exergy Analysis of 70-MW Gas Turbine Unit Under the Variable Operation Condition, Heat Transfer, 49 (2020), 2, pp. 743-754

© 2022 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, 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