Subcooled Flow Boiling in High Power Density Internal Combustion
Engines I: Thermal Survey Measurement Campaign 03-16-01-0002
This also appears in
SAE International Journal of Engines-V132-3EJ
Nucleate boiling occurs inadvertently in the coolant jacket of high power density
internal combustion engines, especially in vicinity of regions experiencing high
thermal loads. Occurrence of boiling can be beneficial and be an efficient way
to improve heat transfer locally near hot spots, but excessive boiling can be
detrimental to structural integrity of the engine. While most of the efforts to
understand boiling have been focused on experiments in simplified geometries,
this article presents results from thermal survey measurement on a production
engine. The purpose of the measurement campaign is to understand the intensity
and extent of nucleate boiling occurring in different parts of the engine
coolant jacket. This is achieved by sweeping across different input parameters,
such as engine operating load point, cooling system operating pressure, coolant
flow rate, and coolant inlet temperature. Different boiling regimes are
encountered in different parts of the coolant jacket. A wide database of local
solid temperatures measured at several critical locations is obtained and these
results are interpreted in line with the underlying physics of subcooled flow
boiling. The database not only helps to understand the boiling phenomenon
occurring in engine coolant jacket, but is also used to calibrate a numerical
boiling model.
Citation: Båstedt, P., Vasudevan, S., and Bovo, M., "Subcooled Flow Boiling in High Power Density Internal Combustion Engines I: Thermal Survey Measurement Campaign," SAE Int. J. Engines 16(1):17-33, 2023, https://doi.org/10.4271/03-16-01-0002. Download Citation
Author(s):
Peter Båstedt, Sudharsan Vasudevan, Mirko Bovo
Affiliated:
Aurobay, Powertrain Engineering Sweden AB, Sweden Volvo Car Corporation, Sweden, Chalmers University of Technology, Division of Fluid Dynamics,
Department of Mechanics and Maritime Sciences, Sweden
Pages: 18
ISSN:
1946-3936
e-ISSN:
1946-3944
Related Topics:
Coolants
Engines
Heat transfer
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