Computer program estimates off-design performance without making actual tests and design point performance. Turbine flow areas, diameters, and blade angles are required input information

Futral, S. M., Jr.

Todd, C. A.

English

NASA Technical Reports Server

August 1969
	 Brief 69-10267 
NASA TECH BRIEF 
NASA Tech Briefs are issued to summarize specific innovations derived from the U.S. space program, 
to encourage their commercial application. Copies are available to the public at 15 cents each 
from the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
-	 ------------_________ 
Computer Program for Off-Design Performance of Radial Inflow Turbines 
.
A computer program for off-design performance of 
radial-inflow turbines has been developed and is 
available. 
The program can be used in two ways. For an exist-
ing turbine where the performance at the design 
operating point may be known, this program provides 
a convenient way to -estimate off-design performance 
without making actual tests. The program is also useful 
as a design guide. For a proposed turbine design, the 
design point performance can usually be closely esti-
mated. However, if the off-design operation is of suf-
ficient importance, modifications in the design may 
be considered. In this case, the effect of a series of 
small design changes on performance may be studied 
by repeated use of this program. 
Use of the program requires as input information 
the turbine flow areas, diameters, and blade angles.
An estimate of design point performance is also neces-
sary. The output consists of conventional performance 
parameters at specified flow conditions and speeds. 
Notes: 
I. This program is written in FORTRAN IV for use on 
the IBM 7094/7044 DCS. 
2. Inquiries should be made to:

COSMIC 
Computer Center 
University of Georgia 
Athens, Georgia 30601
	 - 
Reference: B69-10267 
Patent status: 
No patent action is contemplated by NASA.
	 - 
Source: C. A. Todd and S. M. Futral, Jr. 
Lewis Research Center 
(LEW- 10764) 
Category 06 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19690000267 2020-03-16T17:48:00+00:00Z


Computer program for off-design performance of radial inflow turbines

Abstract

Similar works

Full text

Available Versions

NASA Technical Reports Server