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Numerical simulation of the cooling laminar compressible nozzle flow


Autore: S. Abboudi, J. Deng, M. Imbert

Collana: BT - 34 - Mag 06 - Energy: production, distribution and conservation

In this work, we present a numerical study of an axisymmetric laminar flow of a compressible gas in a small size convergent-divergent nozzle. The numerical algorithm is based on the explicit finite difference method of MacCormack type and the splitting of the operator in a symmetric sequence of one dimensional operators.
Various tests were carried out for two geometries of the nozzle and for adiabatic and convective heat transfer conditions on the wall. A comparison between different test cases is presented as well as the influence of the variation of the heat transfer coefficient corresponding to different situations of the cooling wall, on the dynamic and thermal behaviour of the flow in the nozzle. The results of the temperature, the pressure and Mach number show the influence of the thermal conditions,, in particular in the thermal boundary layers.

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