A Numerical Study of Nonisothermal Resin Flow in RTM with Heated Uniaxial Fibers

Scott A. Wymer, Renata S. Engel

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A numerical model is developed to study the flow of a thermoset resin parallel to a unidirectional, heated fiber array, where the resin viscosity varies with temperature. Steady, incompressible flow is assumed when solving the momentum equation for the velocity parallel to the fiber tow. Resin temperatures are determined by applying a finite differencing scheme to the convective energy equation. An iterative approach is used to update the velocity, temperature, and viscosity in the flow direction. The resulting nonisothermal flow profiles are “plug-like” with significant increases in the velocities near the fibers. Comparisons of average total flow times for isothermal and nonisothermal flows indicate that, for an epoxy resin at an initial 25°C and the fibers heated to 100°C. the fill time is equivalent to the isothermal case with the resin held at a constant 50°C.

Original languageEnglish (US)
Pages (from-to)53-65
Number of pages13
JournalJournal of Composite Materials
Volume28
Issue number1
DOIs
StatePublished - Jan 1 1994

Fingerprint

Resin transfer molding
Resins
Fibers
Viscosity
Epoxy Resins
Incompressible flow
Thermosets
Epoxy resins
Temperature
Numerical models
Momentum

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Chemistry

Cite this

@article{3fb46f2bf5b7412aada4aba5e7bae285,
title = "A Numerical Study of Nonisothermal Resin Flow in RTM with Heated Uniaxial Fibers",
abstract = "A numerical model is developed to study the flow of a thermoset resin parallel to a unidirectional, heated fiber array, where the resin viscosity varies with temperature. Steady, incompressible flow is assumed when solving the momentum equation for the velocity parallel to the fiber tow. Resin temperatures are determined by applying a finite differencing scheme to the convective energy equation. An iterative approach is used to update the velocity, temperature, and viscosity in the flow direction. The resulting nonisothermal flow profiles are “plug-like” with significant increases in the velocities near the fibers. Comparisons of average total flow times for isothermal and nonisothermal flows indicate that, for an epoxy resin at an initial 25°C and the fibers heated to 100°C. the fill time is equivalent to the isothermal case with the resin held at a constant 50°C.",
author = "Wymer, {Scott A.} and Engel, {Renata S.}",
year = "1994",
month = "1",
day = "1",
doi = "10.1177/002199839402800104",
language = "English (US)",
volume = "28",
pages = "53--65",
journal = "Journal of Composite Materials",
issn = "0021-9983",
publisher = "SAGE Publications Ltd",
number = "1",

}

A Numerical Study of Nonisothermal Resin Flow in RTM with Heated Uniaxial Fibers. / Wymer, Scott A.; Engel, Renata S.

In: Journal of Composite Materials, Vol. 28, No. 1, 01.01.1994, p. 53-65.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A Numerical Study of Nonisothermal Resin Flow in RTM with Heated Uniaxial Fibers

AU - Wymer, Scott A.

AU - Engel, Renata S.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - A numerical model is developed to study the flow of a thermoset resin parallel to a unidirectional, heated fiber array, where the resin viscosity varies with temperature. Steady, incompressible flow is assumed when solving the momentum equation for the velocity parallel to the fiber tow. Resin temperatures are determined by applying a finite differencing scheme to the convective energy equation. An iterative approach is used to update the velocity, temperature, and viscosity in the flow direction. The resulting nonisothermal flow profiles are “plug-like” with significant increases in the velocities near the fibers. Comparisons of average total flow times for isothermal and nonisothermal flows indicate that, for an epoxy resin at an initial 25°C and the fibers heated to 100°C. the fill time is equivalent to the isothermal case with the resin held at a constant 50°C.

AB - A numerical model is developed to study the flow of a thermoset resin parallel to a unidirectional, heated fiber array, where the resin viscosity varies with temperature. Steady, incompressible flow is assumed when solving the momentum equation for the velocity parallel to the fiber tow. Resin temperatures are determined by applying a finite differencing scheme to the convective energy equation. An iterative approach is used to update the velocity, temperature, and viscosity in the flow direction. The resulting nonisothermal flow profiles are “plug-like” with significant increases in the velocities near the fibers. Comparisons of average total flow times for isothermal and nonisothermal flows indicate that, for an epoxy resin at an initial 25°C and the fibers heated to 100°C. the fill time is equivalent to the isothermal case with the resin held at a constant 50°C.

UR - http://www.scopus.com/inward/record.url?scp=0028312740&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028312740&partnerID=8YFLogxK

U2 - 10.1177/002199839402800104

DO - 10.1177/002199839402800104

M3 - Article

AN - SCOPUS:0028312740

VL - 28

SP - 53

EP - 65

JO - Journal of Composite Materials

JF - Journal of Composite Materials

SN - 0021-9983

IS - 1

ER -