文档介绍：Cooling Flows through an Annulus Pipe in a Non-Intrusive Stress Monitoring System (NSMS) Probe.
By
Jeffrey Allen Douglas
An Engineering Project Submitted to the Graduate
Faculty of Rensselaer Polytechnic Institute
in Partial Fulfillment of the
Requirements for the degree of
MASTERS OF ENGINEERING
Major Subject: MECHANICAL ENGINEERING
Approved:
_________________________________________
Ernesto Gutierrez-Miravete, Project Adviser
Rensselaer Polytechnic Institute
Hartford, CT
AUGUST, 2009
(For Graduation in AUGUST 2009)
CONTENTS
ABSTRACT iv
LIST OF TABLES v
LIST OF FIGURES vi
NOMENCLATURE vii
1. Introduction 1
2. Background Information 3
NSMS Probe Assembly 3
Cooling Fluid Supply 5
Environment outside the Engine 5
Environment within Engine Outer Ducts 6
Environment within Engine Cases/Flow Path 7
3. Heat Transfer 9
Overview 9
Convection from Outer Environment into Conduit 9
Theory 9
Calculations 10
Conduction through Conduit Wall 12
Theory 12
Convection from Conduit wall into Cooling Fluid 13
Theory 13
4. Pipe Flow 16
Overview 16
Fluid Flow with Friction and Heat Transfer [13] 16
Theory 16
Minor Losses [14, 15] 16
Theory 16
5. AFT Arrow Software for Pipe Flow Analysis [1] 18
Overview 18
Model 18
Software Inputs, AFT Arrow 19
Tanks 19
Pipes 20
Pipe Bends 22
Software Outputs, AFT Arrow 23
6. Simulations and Results 26
Overview 26
Case 1-LPC Probe 26
Data Inputs 27
Results 27
Case 2-HPC Probe 28
Data Inputs 28
Results 28
Case 3-HPT Probe 29
Data Inputs 29
Results 29
7. Conclusion 30
REFERENCES 33
APPENDIX 34
ABSTRACT
This paper describes the development of a mathematical model based on equations pressible pipe flow, convective heat transfer, and conductive heat transfer. The model is then applied to the cooling flow through a Non-I