A Study On Heat Transfer and Flow Characteristics for Boring in Sewer by Rotating Cutter Tool

Title & Authors
A Study On Heat Transfer and Flow Characteristics for Boring in Sewer by Rotating Cutter Tool
Park Young-Ki; Lee Jang-Choon; Lee Dong-Joo;

Abstract
Heat transfer and flow characteristics in a pipe in which the rotating cutting tool for boring a underground pipe without digging were considered in this study. The amount of heat generation due to the friction between the rotating cutter and pipe wall, mixing (low of air and water injected to cool down are the two important factors to design the boring machine Computational fluid dynamics analysis using the Eulerian mixture model and the standard $\small{\kappa-\varepsilon}$ turbulence model was used to analyze the complex phenomena in a pipe during the process. Results show that pipe wall temperature decreased with increasing the cooling water inlet velocity. it is also shown that pipe wail temperature was lowered when the cutter rotation speed was increased until 600 rpm. There was no further cooling effect over 600 rpm.
Keywords
Heat transfer;Boring machine;turbulence model;Cooling effect;
Language
Korean
Cited by
References
1.
모악개발 주식회사, 2002, CCTV.수밀검사 동시수행관로조사 공법, 특허공법 제 0296173호

2.
모악개발 주식회사, 2001, 그라우팅.라이닝 복합보수공법, 특허공법 제0292581호

3.
모악개발 주식회사, 2001, 관로보링장치 및 그공법, 특허출원번호 10-2001-0072050

4.
FLUENT 6.1 User's Guide Volume III, Fluent Inc., 10 Cavendish Court, Centerra Resource Park, Lebanon, NH 03766, USA, 20-22

5.
Versteeg, H. K. and W. Malalasekera, 1995, An introduction to computational fluid dynamics, the finite volume method, Longman Scientific & Technical, New York

6.
White, F. M., 1991, Viscous Fluid Flow, McGrow-­Hill, Singapore

7.
Wilcox, D. C., 1993, Turbulenc Modeling for CFD, DCW Industries, Inc., California