Modification of the Simons model for calculation of nonradial expansion plumesThe Simons model is a simple model for calculating the expansion plumes of rockets and thrusters and is a widely used engineering tool for the determination of spacecraft impingement effects. The model assumes that the density of the plume decreases radially from the nozzle exit. Although a high degree of success has been achieved in modeling plumes with moderate Mach numbers, the accuracy obtained under certain conditions is unsatisfactory. A modification made to the model that allows effective description of nonradial behavior in plumes is presented, and the conditions under which its use is preferred are prescribed.
Document ID
19900050067
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Boyd, I. D. (NASA Ames Research Center Moffett Field, CA, United States)
Stark, J. P. W. (Southampton, University United Kingdom)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: Intl. Symposium on Rarefied Gas Dynamics: Space-Related Studies