Patricia J. Giarratano

TL;DR: In this article, the authors investigated supercritical helium at 2·5 atm flowing inside a vertical tube with inlet bulk fluid temperatures less than the transposed critical temperature and found that for high heat flux conditions, the heat-transfer coefficient passes through a maximum and then deteriorates as the fluid temperature approaches the Transposed Critical temperature.

TL;DR: In this article, a new correlation for the deterioration in heat transfer to turbulent flows of helium, relative to standard constant property correlations is presented, based on analogy between the heat transfer process to a gas with high thermal expansion and that which takes place in the presence of gas injection through a porous wall.

TL;DR: In this paper, transient boiling heat transfer data for two different heater surface geometries submerged in liquid nitrogen is reported, and the heat transfer coefficient for both geometry generally agrees with values predicted from classical transient pure conduction equations.

TL;DR: In this paper, a low-gravity environment is used to suppress gravitational convection in heat transfer measurements where a transient heat pulse in a metal surface induces a fluid velocity perpendicular to that surface, and surface temperatures are measured electrically and temperature profiles in the heated fluid are determined optically.

TL;DR: In this article, the wall temperatures and heat transfer coefficients for solid-vapor mixtures of para hydrogen and nitrogen flowing in heated tube were analyzed for a heated tube with liquid nitrogen and para hydrogen.