Simplified Streamline Swallowing Procedure for the Windward Meridian of Axisymmetric Blunt Bodies

摘要

A relatively simple procedure has been developed to include variable boundary layer edge entropy in an inviscid flow solution on the windward ray of axisymmetric blunt bodies. Variable boundary layer edge entropy is significant downstream of the nose region on blunt bodies due to entropy gradients along the curved bow shock. Laminar and turbulent boundary layer growth models are used in a mass balancing technique to account for the effects of entropy gradients produced at the bow stock. The solution is driven by the inviscid surface pressure distribution, mass flow within the boundary layer, and bow shock shape. The code takes about 10 min/case to run on an IBM AT personal computer. Heat transfer comparisons to experimental data and other heating rates codes are favorable. The method is accurate from M at infinity = 2.8 to 15 for cones with flow incidence angles up to 25 deg.