Arc jets are unique facilities used to evaluate the performance of Thermal Protection Systems (TPS) for hypersonic vehicles. They produce high pressure and enthalpy plasma flow simulate extreme heat encountered during atmospheric entry. The constricted arc heater part an jet increases test gas temperature by Joule heating. This study details development three-dimensional unsteady analysis tool,...

Nosocomial infections acquired during the course of cardiac surgery and hospitalization can have devastating patient consequences. The source of these infections is often difficult to determine which complicates eradication efforts. Recently it has become apparent that the heater-cooler devices used in conjunction with cardiopulmonary bypass may become contaminated with bacteria that are normal...

Natural convection in an annulus with a discrete heat source on the inner cylinder is studied numerically. The outer cylinder is isothermally cooled at a fixed low temperature, and the top wall, the bottom wall and unheated portions of the inner cylinder are thermally insulated. For low applied heat flux through the heater, as measured non-dimensionally by a Grashof number, Gr , the flow in the...

Abstract This study aims to evaluate the performance of a flat plate solar water heater (SWH) theoretically and experimentally. The thermal SWH was predicted using Fortran 90 programming language. designed as square shape with dimensions 110 cm length, 120 width 10 depth tested by integrating modified distiller increase temperature in basin at constant mass flow rate 1.2 l/min. tests were condu...

This paper presents the thermo-hydraulic performance of small conical ribs on absorber plate a solar energy air heater (SAH) using exergy analysis. Application protrusion is an attractive solution for enhancing thermal SAH. However, these are also responsible high friction losses and increased fan power consumption caused by turbulent flow. To optimize rib design, it vital to consider both hydr...