All-Pressure Fluid-Drop Model Applied to a Binary Mixture

A report presents a computational study of the subcritical and supercritical behaviors of a drop of heptane surrounded by nitrogen, using the fluid-drop model described in "Model of a Drop of O2 Surrounded by H2 at High Pressure" (NPO-20220) and "The Lewis Number Under Supercritical Conditions" (NPO-20256), NASA Tech Briefs, Vol. 23, No. 3 (March 1999), pages 66-70. In this model, the differences between subcritical and supercritical behaviors are identified with length scales. The report compares results of the computations with data from microgravity experiments on large drops at temperatures and pressures in the sub- and supercritical regimes.