Accession Number:

ADA179538

Title:

Prediction of Fluid Flow in Curved Pipe Using the Finite Element Method.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY MILITARY PERSONNEL CENTER ALEXANDRIA VA

Personal Author(s):

Report Date:

1987-04-13

Pagination or Media Count:

87.0

Abstract:

An analysis of turbulent flow through curved pipes was attempted using the finite element method. A commercial finite element code, FIDAP, which employs the k-e model was used. Mesh configurations were developed for three curved pipes with varying bend angles. A pipe with a 180 deg bend was modeled after an experiment to verify the results of the computer code. A 90 deg and 45 deg pipe were modeled at a bend radius of 1 pipe diameter, to simulate standard pipes in ventilation systems. The intent of the study was to examine the flow profiles exiting the bend. The results should give some explanation of the effect of bends on the poor performance of fans placed downstream of bends. The turbulent model failed to converge for a steady-state analysis of the curved pipe flow, so a laminar flow analysis was done. The results show the expected distortion in the velocity profiles exiting from the bends. Also some conclusions were drawn about attaining better convergence with curved pipe flow. Keywords Fluid dynamics Computer modeling Finite element method Turbulence modeling Pipe bends. Theses

Subject Categories:

  • Pumps, Filters, Pipes, Tubing, Fittings and Valves
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE