Using computational fluid dynamics (CFD), a parametric study was conducted to determine lift, drag, and moment characteristics over a 2-D jet nozzle given a variety of external geometric and flight parameters and engine operating conditions. Varied parameters included Mach number (M), nozzle pressure ratio (NPR), boattail angle (B_C), and shelf length (l_s). Results of the 2-D CFD study predict force and moment incremental trends which are then consolidated into a parametric tool. The tool aids geometry optimization by drawing upon the CFD database and expanding its range through trilinear interpolation. The conceptual design tool allows for quick estimates of jet effects, thus reducing computational time from up to a week or more if done manually to less than six seconds.
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