Browse > Article

Numerical Analysis of Conjugate Heat Transfer in a Curved Piping System Subjected to Internal Stratified Laminar Flow  

Jo Jong Chull (한국원자력안전기술원)
Choi Hoon-Ki (창원대학교 기계공학과)
Publication Information
Journal of computational fluids engineering / v.7, no.3, 2002 , pp. 35-43 More about this Journal
Abstract
This paper addresses a numerical method for predicting transient temperature distributions in the wall of a curved pipe subjected to internal laminar thermally-stratified flow. A simple and convenient numerical method of treating the unsteady conjugate heat transfer in non-orthogonal coordinate systems is presented. Numerical calculations are performed for the transient evolution of thermal stratification in two curved pipes, where one has thick wall and the other has so thin wall that its presence can be negligible in the heat transfer analysis. The predicted results show that the thermally stratified flow and transient conjugate heat transfer in a curved pipe with a finite wall thickness can be satisfactorily analyzed by the present numerical method, and that the neglect of wall thickness in the prediction of pipe wall temperature distributions can provide unacceptably distorted results for the cases of pipes with thick wall such as safety related-piping systems of nuclear power plant.
Keywords
Laminar Thermal Stratification Flow; Three-Dimensional Numerical Analysis; Finite Volume Method; Unsteady Conjugate Heat Transfer;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Zhu, J., 'A Low-Diffusive and Oscillation- Free Convection Scheme,' Comm. Appl. Numer. Methods. vo1.7, (1991), pp.225-232
2 Ushijima, S., 'Prediction of Thermal Stratification in a Curved Duct with 3D Body-Fitted Co-ordinates,' Int. J. Numer. Methods Fluids, Vo1.19, (1994,), pp.647- 665
3 Abou-rjeily, Y. and Barois, G., 'Numerical Prediction of Stratified Pipe Flows in PWRs,' Nucl. Eng. & Des., Vo1.147, (1993), pp.47-51
4 Rhie, C.M. and Chow, W.L., 'Numerical Study of the Turbulent Flow Past an Airfoil with Trailing Edge Separation,' AIAA J., 21-11, (1983), pp.1525- 1532
5 Baron, F., Gabillard, M. and Lacroix, C., 'Experimental Study and Three- Dimensional Prediction of Recirculating and Stratified Pipe Flow in PWR' Proc. NURETH4-Karlsruhe,(1989),pp.1354- 1361
6 Jo, J.C. et. al., 'Three-Dimensional Numerical Analysis of Thermally Stratified Flow in a Curved Piping System,' ASME PVP-Vol. 414-1, (2000), pp.31-48
7 Doormal, J.P. Van and Raithby, G.D., 'Enhancements of the SIMPLE Method for Predicting Incompressible Fluid Flows,' Numer. Heat Transfer, Vo1.7, (1984), pp. 147-163
8 Baik, S.J., Im, I.Y. and Ro, T.S., 'Thermal Stratification in the Surge Line of the Korean Next Generation Reactor,' Pro. OECD NEA/ WANO Special Meeting. Paris, (1998)
9 Patankar, S.V., Numerical Heat Transfer and Fluid Flow, McGraw-Hill, New York, (1980)