NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The diffusion approximation. An application to radiative transfer in cloudsIt is shown how the radiative transfer equation reduces to the diffusion equation. To keep the mathematics as simple as possible, the approximation is applied to a cylindrical cloud of radius R and height h. The diffusion equation separates in cylindrical coordinates and, in a sample calculation, the solution is evaluated for a range of cloud radii with cloud heights of 0.5 km and 1.0 km. The simplicity of the method and the speed with which solutions are obtained give it potential as a tool with which to study the effects of finite-sized clouds on the albedo of the earth-atmosphere system.
Document ID
19770003386
Document Type
Conference Paper
Authors
Arduini, R. F.
(Joint Inst. for Advancement of Flight Sciences Washington, DC, United States)
Barkstrom, B. R.
(Joint Inst. for Advancement of Flight Sciences Washington, DC, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Publication Information
Publication: NASA. Langley Res. Center Advan. in Eng. Sci., Vol. 3
Subject Category
Fluid Mechanics And Heat Transfer
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

NameType 19770003386.pdf STI

Related Records

IDRelationTitle19770003363Analytic PrimaryAdvances in Engineering Science, Volume 3