Frictional and constant temperature heating control of air flow in diverging part of horizontal nozzles

The study is concerned with the interference of friction in constant temperature heating inside the diverging part of a convergingdiverging nozzle working at design condition where the velocity changes to supersonic flow regime from a Mach no. of 1.0. Set of gas-dynamic equations are completed using numerical approximation of the dimensionless derivatives. A finite difference technique with 20% under-relaxation factor is applied. Most of these equations are non-linear along from the throat till the nozzle exit with a wide range of frictional forces from 0.001 to 0.003 average frictional factor ranges with 0.00025 steps. The results are distributed between 3.0 and 4.0 area ratio of non-linear inside nozzle curvature. The multi mixing of all variables help to give results different and more accurate values than isentropic or with isothermal or frictional states or with double mixing of any of them to be more close to experimental ones. These all together have been considered in our model which has employed all variables which will assist in the optimum design for real type of nozzles.