Flowfield performance prediction of a 2DCD vectored nozzle using self adaptive solution method
Abstract
The flowfield of a twodimensional convergentdivergent (2DCD) vectored nozzle is analized using a selfadaptive solutiondependent gridrefinement method to obtain the Euler solution of the flowfield for the 2DCD nozzle geometry for several vectored positions. The pressure distribution from this analysis is compared with test data, demonstrating the computational accuracy of the numerical methods used in the analysis. Performance parameters such as the thrust coefficient, discharge coefficient, and thrust vector angle, are calculated for various 2DCD and axisymmetric nozzles and compared with test data. A comparison of predictions made with the adaptive unstructured grid of a complex shock structure in a 2DCD vectored nozzle with predictions made with a structured grid using the same geometry and flow conditions demonstrated the advantage of the adaptive grid.
 Publication:

AIAA, SAE, ASME, and ASEE, 27th Joint Propulsion Conference
 Pub Date:
 June 1991
 Bibcode:
 1991jpsc.confT....R
 Keywords:

 Computational Fluid Dynamics;
 Computational Grids;
 ConvergentDivergent Nozzles;
 Flow Distribution;
 Nozzle Geometry;
 Viscous Flow;
 Axisymmetric Bodies;
 Discharge Coefficient;
 Pressure Distribution;
 Thrust Measurement;
 Thrust Vector Control;
 Fluid Mechanics and Heat Transfer