A study of thermal transients involving hydrodynamic variation in the thermal entrance region of a circular tube
Date
1968-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Texas Tech University
Abstract
A study of the induced hydrodynamic flow transient and the imposed thermal transient associated with step increases in wall temperature for laminar gas flow in a clrcular tube is presented. The basic governing equations are derived with property variations taken into account. The governing equations are put into an appropriate form for numerical solution. Problem data are specified using air as the gas, and solutions are obtained for three different step increases in the tube wall temperature. It is determined that the step increase in wall temperature produdes not only a thermal transient but also an induced hydrodynamic transient resulting in a corresponding friction factor transient.
Description
Keywords
Tubes, Laminar flow, Thermodynamics, Gas flow