Abstract.
Experiments have been performed to assess the utility of unsteady one-dimensional heat conduction modelling for the calculation of heat losses during a free piston compression process. Heat transfer measurements have been obtained within a gun tunnel barrel using surface junction thermocouple instrumentation. The gun tunnel was operated with a relatively heavy piston such that the shock waves induced by the piston motion were weak. Peak heat transfer values are estimated reasonably well by the unsteady one-dimensional model. However, overall quantitative agreement between the measurements and calculations has not been achieved at this stage, principally because the development of turbulent heat transport was not properly modelled.
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Received 21 September 2001 / Accepted 11 March 2002 – Published online 11 June 2002
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Buttsworth, D. Heat transfer during transient compression: Measurements and simulations. Shock Waves 12, 87–91 (2002). https://doi.org/10.1007/s00193-002-0140-7
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DOI: https://doi.org/10.1007/s00193-002-0140-7