Accession Number : AD0693037
Title : A CRITICAL ANALYSIS OF NUMERICAL TECHNIQUES: THE PISTON-DRIVEN INVISCID FLOW
Descriptive Note : Research rept.
Corporate Author : POLYTECHNIC INST OF BROOKLYN FARMINGDALE NY DEPT OF AEROSPACE ENGINEERING AND APPLIED MECHANICS
Personal Author(s) : Moretti, Gino
PDF Url : AD0693037
Report Date : Jul 1969
Pagination or Media Count : 73
Abstract : A critical analysis of well-known procedures for the computation of one-dimensional shocked flows is made, in order to show the inconveniences of computing finite differences across a discontinuity and to prove that the use of the equations of motion in conservation form does not make the results any more accurate. A technique is developed to treat one-dimensional inviscid problems and it is applied to the problem of an accelerating piston. Practical and safe ways to predict the formation of a shock and to follow it up in its evolution are given.
Descriptors : *SHOCK WAVES, ACCELERATION, EQUATIONS OF MOTION, NUMERICAL ANALYSIS, ONE DIMENSIONAL FLOW, PISTONS
Subject Categories : Aerodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE