A finite-difference model was used to investigate the unsteady heat transfer in a combustion-chamber deposit. Experimental surface temperature measurements were used as boundary conditions for the computational study. The temperature dependence of the deposit conductivity was modeled using a power law relationship, k = A · TB. The numerical value of the exponent, B, was estimated from data available in the literature, and the value of A was then determined from the experimental data.Both the amplitude and the time lag of the temperature fluctuations at the deposit-wall interface were investigated and used to estimate a value of deposit heat capacity, ρC. Both the instantaneous heat flux at the deposit surface, and the total heat loss were investigated.
The Effects of Variable Conductivity on Unsteady Heat Transfer in Deposits
Sae Technical Papers
SAE International Congress and Exposition ; 1985
01.02.1985
Aufsatz (Konferenz)
Englisch
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