Accelerated Iterative Calculation of Transonic Nacelle Flowf ields
نویسنده
چکیده
A method is presented for the calculation of in viscid, supercritical flowfields about axisymmetric inlet cowls. A finite-difference calculation is performed in a simple, rectangular domain obtained from the nacelle geometry by a nearly conformal mapping procedure. Type-dependent finite differences are constructed using a coordinate-independent, "rotated" differencing scheme. Methods of accelerating convergence of the iterative solution are demonstrated including a hybrid fast-Poisson-solver/relaxation scheme and an extrapolated relaxation procedure. Calculated pressure distributions are compared with experimental data for a variety of Mach numbers and mass flow ratios, and show generally good agreement.
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تاریخ انتشار 2003