This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Enhancement of Heat Exchanger Performance Using Oscillating Flow
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
In this research work, the heat transfer enhancement by using oscillatory flow of the thermal fluid between cold and hot reservoir has been analyzed both theoretically and using simulation methods. The main objective of this study is to examine the feasibility of a system working under oscillatory flow conditions compared to its steady flow counterpart. The principle of incrementing thermal diffusion over molecular diffusion by establishing oscillatory flow has been utilized in this case. The system has been designed and the effect of the flow condition has been analyzed using ANSYS Fluent k-epsilon model. The effect of change in the magnitude and frequency of oscillation on local Nusselt number has been computed. The observed increment in the Nusselt number by increasing the amplitude and frequency of the fluid has been bolstered by analytical calculation. A comparison in the heat transfer of a system working under oscillating and a steady flow conditions has been generated to establish the need for oscillating flow. The scope of the study has been extended to explore possibility of implementation of this concept in the automotive HVAC system and in the cooling, mechanisms employed in microelectronic components present onboard e-vehicles.
CitationRajagopalan, H., Premchandra Tavorath, A., Pol, S., and Dhamangaonkar, P., "Enhancement of Heat Exchanger Performance Using Oscillating Flow," SAE Technical Paper 2020-01-0943, 2020.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
- Ilori, O.M., Jaworski, A.J., and Mao, X. , “Experimental and Numerical Investigations of Thermal Characteristics of Heat Exchangers in Oscillatory Flow,” Applied Thermal Engineering, 2008, doi:10.1016/j.applthermaleng.2018.07.073.
- Kalra, S., Desai, K.P., Naik, H.B., Atrey, M.D. et al. ,“Theoretical Study of Standing Wave Thermoacoustic Engine,” in 25th International Cryogenic Engineering Conference and the International Cryogenic Materials Conference, 2014, doi:10.1016/j.phpro.2015.06.058.
- Petersen, H. , “The Properties of Helium: Density, Specific Heats, Viscosity, and Thermal Conductivity at Pressures from 1 to 100 Bar and from Room Temperature to about 1800K,” Danish Atomic Energy Commission, Risö, Report No. 224, Sept. 1970.
- Vesely, M. and Vit, T. , “Difference between Working Gases in Thermoacoustic Engine,” EDP Sciences, 2014, doi:10.1051/epjconf/20146702126.
- Fatimah, A.Z. and Jaworski, A.J. , “Oscillatory Flow and Heat Transfer within Parallel-Plate Heat Exchangers of Thermoacoustic Systems,” in Proceedings of the World Congress on Engineering 2013, WCE 2013, Vol. III, July 3-5, 2013, London, U.K, doi:10.3390/app7070673.
- Ilori, O.M., Mao, X., and Jaworski, A.J. , “Numerical Simulation of Oscillatory Flow and Heat Transfer in the Heat Exchangers of Thermoacoustic Systems,” in The 24th IIR International Congress of Refrigeration, Yokohama, Japan, Aug. 16-22, 2015, doi:10.18462/iir.icr.2015.0522.
- Piccolo, A., Siclari, R., Rando, F., Cannistraro, M. et al. , “Analysis of Heat Transfer in Oscillating Flow through a Channel Filled with Metal Foam Using Computational Fluid Dynamics, Comparative Performance of Thermoacoustic Heat Exchangers with Different Pore Geometries in Oscillatory Flow, Implementation of Experimental Techniques,” Applied Science, 2017, doi:10.3390/app7080784.
- Fatimah, A.Z., Saat, M., and Jaworski, A.J. , “Numerical Predictions of Early Stage Turbulence in Oscillatory Flow Across Parallel-Plate Heat Exchangers of a Thermoacoustic System,” Applied Science, 2017, doi:10.3390/app7070673.
- Kaiviany, M. , “Performance of a Heat Exchanger Based on Enhanced Heat Diffusion in Fluids by Oscillation: Analysis,” J. Heat Transfer, Feb. 1990, doi:10.1115/1.2910363.
- Besnoin, E. and Knio, O.M. , “Numerical Study of Thermoacoustic Heat Exchangers In The Thin Plate Limit,”, Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD, doi: 1080/10407780152619784.