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THERMAL-MECHANICAL CHARACTERISTICS OF STATIONARY AND PULSATING GAS-FLOWS IN A GAS-DYNAMIC SYSTEM: IN RELATION THE EXHAUST SYSTEM OF AN ENGINE

ABSTRACT
It is a relevant objective in thermal physics and in building reciprocating internal combustion engines (RICE) to obtain new information about the thermal-mechanical characteristics of both stationary and pulsating gas-flows in a complex gas-dynamic system. The article discusses the physical features of the gas dynamics and heat transfer of flows along the length of a gas-dynamic system typical for RICE exhaust systems. Both an experimental set-up and experimental techniques are described. An indirect method for determining the local heat transfer coefficient of gas-flows in pipe-lines with a constant temperature hot-wire anemometer is proposed. The regularities of changes in the instantaneous values of the flow rate and the local heat transfer coefficient in time for stationary and pulsating gas-flows in different elements of the gas-dynamic system are obtained. The regularities of the change in the turbulence number of stationary and pulsating gas-flows along the length of reciprocating internal combustion engines gas-dynamic systems are established (it is shown that the turbulence number for a pulsating gas-flow is 1.3-2.1 times higher than for a stationary flow). The regularities of changes in the heat transfer coefficient along the length of the engine’s gas-dynamic system for stationary and pulsating gas-flows were identified (it was established that the heat transfer coefficient for a stationary flow is 1.05-1.4 times higher than for a pulsating flow). Empirical equations are obtained to determine the turbulence number and heat transfer coefficient along the length of the gas-dynamic system.
KEYWORDS
PAPER SUBMITTED: 2020-10-29
PAPER REVISED: 2021-03-15
PAPER ACCEPTED: 2021-03-27
PUBLISHED ONLINE: 2021-05-16
DOI REFERENCE: https://doi.org/10.2298/TSCI201029171P
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 1, PAGES [363 - 374]
REFERENCES
  1. Helgeland A., et al., Numerical simulations of the pulsating flow of cerebrospinal fluid flow in the cervical spinal canal of Chiari patient, Journal of Biomechanics, 47(5) (2014), pp. 1082-1090
  2. Plotnikov L.V., Zhilkin B.P. Influence of gas-dynamical nonstationarity on local heat transfer in the gas-air passages of piston internal-combustion engines, Journal of Engineering Physics and Thermophysics, 91 (6) (2018), pp. 1444-1451
  3. Simonetti M., et al., Experimental investigation and 1D analytical approach on convective heat transfers in engine exhaust-type turbulent pulsating flows, Applied Thermal Engineering, 165 (2020), an 114548
  4. Thamaraikanan R., et al., Design and analysis of an intake manifold in an IC engine, Applied Mechanics and Materials, 766-767 (2015), pp. 1021-1027
  5. Buhl S., et al., A comparative study of intake and exhaust port modeling strategies for scale-resolving engine simulations, International journal of engine research, 19(3) (2018), pp. 282-292
  6. Gündogdu M.Y., Carpinlioglu M.Ö. Present state of art on pulsatile flow theory, JSME International Journal, Series B: Fluids and Thermal Engineering, 42 (3) (1999), pp 384-410
  7. Miau J.J., et al., An investigation into inflection-point instability in the entrance region of a pulsating pipe flow, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 473 (2197) (2017), an 20160590
  8. Yusof S.N.A., et al., Computational analysis on the effect of size cylinder for the irreversible process in a piston-cylinder system using ICED-ALE method, CFD Letters, 11(4) (2019), pp. 92-104
  9. Simakov N.N. Calculation of Resistance and Heat Transfer of a Ball in the Laminar and Highly Turbulent Gas Flows, Technical Physics. The Russian Journal of Applied Physics, 12 (2016), pp. 42-48
  10. Holley B., Faghri A. Analysis of pulsating heat pipe with capillary wick and varying channel diameter, International Journal of Heat and Mass Transfer, 48 (13) (2005), pp. 2635-2651
  11. Yuan H., et al., Heat transfer of pulsating laminar flow in pipes with wall thermal inertia, International Journal of Thermal Sciences, 99 (2016), pp. 152-160
  12. Wang X., Zhang N. Numerical analysis of heat transfer in pulsating turbulent flow in a pipe, International Journal of Heat and Mass Transfer, 48 (19) (2005), pp. 3957-3970
  13. Davletshin I.A., et al., Convective heat transfer in the channel entrance with a square leading edge under forced flow pulsations, International Journal of Heat and Mass Transfer, 129 (2019), pp. 74-85
  14. Park J.S., et al., Heat Transfer to Pulsating Turbulent Gas Flow, Proc. 7th Intern. Heat Transfer Conf., 3 (1982), pp. 105-110
  15. Chung Y.M., Tucker P.G. Assessment of Periodic Flow Assumption for Unsteady Heat Transfer in Grooved Channels, Journal of Heat Transfer, 126 (6) (2004), pp. 1044-1047
  16. Cerdoun M., S et al., Investigations on the heat transfer within intake and exhaust valves at various engine speeds, International Journal of Heat and Mass Transfer, 147 (2020), an 119005
  17. Guan W., et al., Miller cycle combined with exhaust gas recirculation and post-fuel injection for emissions and exhaust gas temperature control of a heavy-duty diesel engine, International Journal of Engine Research, 21 (8) (2020), pp. 1381-1397
  18. Albaladejo-Hernández D., et al., Influence of catalyst, exhaust systems and ECU configurations on the motorcycle pollutant emissions, Results in Engineering, 5 (2020), an 100080
  19. Zhao M., et al., Simulation of effects of ORC system installation on heavy-duty truck, Applied Thermal Engineering, 128 (2018), pp. 1322-1330
  20. Lao C.T., J. et al., Investigation of the impact of the configuration of exhaust after-treatment system for diesel engines, Applied Energy, 267 (2020), an 114844
  21. Mahabadipour H., et al., Investigation of exhaust flow and exergy fluctuations in a diesel engine, Applied Thermal Engineering, 147 (2019), pp. 856-865
  22. Kaladgi A.R., et al., CFD Analysis of Flow Field Development in a Direct Injection Diesel Engine with Different Manifolds, American Journal of Fluid Dynamics, 4 (2014), pp. 102-113
  23. Ferguson C.R., Kirkpatrick A.T. Internal combustion engines: applied thermosciences, John Wiley & Sons, USA, 2015
  24. Bradshaw P. Introduction to Turbulence and its Measurement, Moscow, 1974
  25. Mukhachev G.A., Shchukin V.K. Thermodynamics and heat transfer, Higher School, Moscow, 1991
  26. Kutateladze S.S., Leontiev A.I. Heat and mass transfer and friction in a turbulent boundary layer, Energoatomizdat, Moscow, 1985
  27. Plotnikov L.V., Zhilkin B.P. The gas-dynamic unsteadiness effects on heat transfer in the intake and exhaust systems of piston internal combustion engines, International Journal of Heat and Mass Transfer, 115 (2017), pp. 1182-1191
  28. Plotnikov L.V., Zhilkin B.P. Specific aspects of the thermal and mechanic characteristics of pulsating gas flows in the intake system of a piston engine with a turbocharger system, Applied Thermal Engineering, 160 (2019), an 114123
  29. Plotnikov L.V., et al., Physical and Numerical Modeling of Thermomechanical Processes in Gas-Air Systems of Piston Engines Under Gasdynamic-Nonstationarity Conditions, Journal of Engineering Physics and Thermophysics, 93 (3) (2020), pp. 594-604

© 2024 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