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CHT'01 - Advances in Computational Heat Transfer II. Proceedings of a Second Symposium
2001, 20-25 May, Palm Cove, Queensland, Australia

MODELING OF HIGH PRESSURE SWIRL HOLLOW CONE FUEL SPRAY

pages 1275-1282
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ABSTRACT

Numerical calculations of a swirl hollow cone spray generated by a pressure-swirl injector have been carried out using a modified version of KIVA 3V. Atomization has been simulated by injection of blobs having dimension equal to the sheet thickness in the nozzle hole. The parcels are considered to break when the traveling distance becomes greater than the sheet break up length. Break up of blobs and of children drops has been simulated using the Taylor Break Analogy (TAB) model. The break-up length of the sheet has been calculated from a semi-empirical correlation based on the wave instability theory due to Dombrowski and Hooper, with the modifications introduced by Han and Reitz. Spray visualization has been performed with the aid of a CCD camera. Therefore the spray evolution has been analyzed and characterized via experimental techniques; thereafter, using the experimental result, the computer code has been tested, by means of a comparison between simulation and measured data.

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