A Force Estimation Method for Viscous Separated Flow Over Slender Axisymmetric Bodies With Tapered Tails

摘要

A new impulse method for modeling the normal force distributions along slender axisymmetric bodies with tapered tails is presented. This method is based on a decomposition of the hydrodynamic impulse along the body into an inviscid, profile-dependent component and a viscous, profile-independent component. It is applicable to separated flows up to 30 deg of incidence. Model results for the normal force distributions, total normal force, and total moment on axisymmetric streamlined bodies with tapered tails are compared with computational fluid dynamics (CFD) simulations and experimental data up to a Reynolds number of 23 × 10~6 with good agreement. The model was also tested on a missile-shaped body and was found to be in excellent agreement with experimental results.