Physical description of an isentropic flow in a Laval nozzle
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Abstract
The convergent-divergent nozzles have many industrial uses such as wind turbine, the blades of turbine engines, aircraft wings and screw propeller. The main objective of this study is to identify and evaluate the physical properties of the compressible flow of an ideal gas in a one-dimensional Laval nozzle in terms of its physical and geometrical parameter. This paper will enable us to identify and determine the causes of right shockwave phenomenon. After simplify of the energy balance equations of gas dynamics, Matlab™ was used as a tool for programming. The numerical method for the resolution is based on the iterative method with an error (E=10-5). Numerical results were compared to the modeling results of CFD ‘Fluent’. The results were satisfactory.
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