NACA-TN-3400

Analysis of errors introduced by several methods of weighting nonuniform duct flows

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T17:21:54Z
date available	2017-09-04T17:21:54Z
date copyright	01/01/1955
date issued	1955
identifier other	ZUNUYDAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std/handle/yse/145128
description abstract	Various weighting methods are applied to typical nonuniform duct flow profiles to determine average flow properties. The analysis covers a range of subsonic duct Mach numbers, but is confined to flows having uniform static pressure and total temperature. An averaging method is developed which yields uniform properties that reproduce the mass and momentum of the nonuniform flow. In contrast, it is shown that the use of conventional weighting methods may result in large errors in these properties. These errors are shown to have varying significance depending on the applications to which the data are applied. It is also shown that nonuniform flows through variable-area duct passages will cause changes in average flow properties that are not associated with the real thermodynamic flow path.
language	English
title	NACA-TN-3400	num
title	Analysis of errors introduced by several methods of weighting nonuniform duct flows	en
type	standard
page	41
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1955
contenttype	fulltext