Abstract
IT is of interest to find that Drs. Kumagai and Isoda's results are in agreement with the earlier measurements at the National Gas Turbine Establishment. The constant T/d02 they refer to as the specific burning-time is the inverse of a quantity referred to in the work at the National Gas Turbine Establishment as the evaporation constant λ. In the case of liquid fuel drops, the latter concept is perhaps of more general significance, as it can be applied to evaporation under both non-burning and burning conditions. In the low-temperature case the evaporation-rate is determined by diffusion processes, and in the high-temperature case the evaporation-rate is determined by heat transfer processes. In both cases experiments have shown that the mass evaporation-rate is proportional to the first power of the radius of the drop. Hence in both cases T/d02 is constant, and may be conveniently referred to in the general case as the specific lifetime of the drop.
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GODSAVE, G. Combustion of Fuel Droplets. Nature 166, 1111 (1950). https://doi.org/10.1038/1661111b0
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DOI: https://doi.org/10.1038/1661111b0
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