Some Works on FTRANC: Steady and Unsteady Time Linearized Full Potential Solver.

摘要

FTRANC is a steady and unsteady method based on the time-linearized concept. The unsteady part is modeled as a small deviation from its mean steady condition, the unsteady part is dependent to the steady part as a result of nonlinearities in the equation. The steady part then has to be solved first to analyze the unsteady part. In pitching oscillation the steady part calculations are performed for a number of angles of attack and the mean steady potential is used in the unsteady calculation. Here a brief review of this method is presented and the embedding of the conjugate gradient method for the relaxation in the fine mesh is described.