Program, written for Hewlett-Packard 9100A electronic desk computer provides convenient and immediate solution to problem of calculating pressure drop and fluid pumping power for flow through round tubes. Program was designed specifically for steady-state analysis and assumes laminar flow

Jelinek, D.

English

NASA Technical Reports Server

June 1973
	 B73-10186 
NASA TECH BRIEF 
•	 Marshall Space Flight Center 
NASA Tech Briefs announce now technology derived from the U.S. space program. They are issued to encourage 
commercial application. Tech Briefs are available on a subscription basis from the National Technical Information 
Service, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Office, NASA, Code KT, Washington, D.C. 20546. 
Pressure Drop and Pumping Power for Fluid Flow Through Round Tubes 
.
The problem: 
To calculate the pressure drop and fluid pumping 
power for flow through round tubes. 
The solution: 
A program has been written for the Hewlett Packard 
9100A electronic desk type computer which provides a 
convenient and immediate solution to the problem. 
How it's done: 
The equations used in the solution are taken from the 
following manual: Jelinek, D., Active Temperature 
Control Fluid Systems Preliminary Design for Grand 
Tour Mission, Rockwell International Corporation, 
April 1971. 
Ap	 1PH\ 
IL 
= 9.7634 x 108 
w =3.7660x10 (')w 
where:
d = inside tube diameter, ft. 
L = tube length, ft. 
PW = pumping power, watts 
W = fluid flow rate, lb/hr 
Ap = pressure drop, lb/ft2 
p = fluid density, lb/ft3 
jjH
 = viscosity, lb/(ft x hr)
The program was designed specifically for steady-state 
analysis and assumes laminar flow. 
Notes: 
1. This program is written for the Hewlett Packard 
9100A electronic desk computer. The documenta-
tion includes a program listing; no source 'deck is 
required. 
2. Potential uses of this program include the design of 
air duct systems, hot water or steam lines, refriger-
ation system lines, and hydraulic system lines for 
use in homes, factories, or automobiles. 
3. Requests for further information should be directed 
to:
COSMIC 
112 Barrow Hall 
University of Georgia 
Athens, Georgia 30601 
Reference: MFS-24172 
Source: Donald Jelinek of 
Rockwell International Corp. 
under contract to
Marshall Space Flight Center 
(MFS-24 172) 
Category 09, 06 
This document was prepared under the sponsorship of the National	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States 	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States 	 will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19730000186 2020-03-17T07:09:35+00:00Z


Pressure drop and pumping power for fluid flow through round tubes

Abstract

Similar works

Full text

Available Versions

NASA Technical Reports Server