Principal Investigator

D.R. Jeng

Contract Number

Contract NsG-381

Contract Name

Contract NsG-381


National Aeronautics and Space Administration

Date of Report


Date of Project


School/Organization Name

University of Alabama Research Institute

Subject Area

Unsteady Heat Transfer

Document Type



An analysis is made for the unsteady heat-transfer, due to a time dependent wall heat flux, from an infinite disk, rotating in still fluid with large suction. The procedure begins with a consideration of the thermal response caused by a step change in the local wall heat flux. It is found that the response time varies inversely with the Prandtl number, the angular velocity and the second power of the suction parameter. Incompressible flow with dissipation is considered first. For an ideal gas with constant Prandtl number whose viscosity varies linearly with temperature, the incompressible results may be, if dissipative effect can be ignored, directly applied provided that all properties in the solution are replaced by their wall values.

Publication Date



Final Technical Report

Citizenship Confirmation


Sensitive Material Confirmation




To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.