CFD MODELING OF STEAM CONDENSATION IN INDUSTRIAL PIPES

CFD MODELING OF STEAM CONDENSATION IN INDUSTRIAL PIPES

PADOIN, N.; SOARES, C.

Artigo:

Phase change is a phenomenon frequently encountered in the process industry''s equipment. The prediction of its occurrence is important for the optimized design and operation of such operation units. The numerical simulation of vapor condensation in industrial pipes, for instance, allows for the assessment of pumping requirements and best practices for insulation. In this study, a commercial CFD code was applied for the investigation of condensation in pipes. The volume of fluid (VOF) approach was employed for the reconstruction of the vapor-liquid interface and the amount of liquid condensed was evaluated under different operational conditions, i.e., channel dimensions, mass flow rate and heat load from the wall. The results obtained from the CFD simulations were compared with the predictions from classical correlation and showed good agreement.

Phase change is a phenomenon frequently encountered in the process industry''s equipment. The prediction of its occurrence is important for the optimized design and operation of such operation units. The numerical simulation of vapor condensation in industrial pipes, for instance, allows for the assessment of pumping requirements and best practices for insulation. In this study, a commercial CFD code was applied for the investigation of condensation in pipes. The volume of fluid (VOF) approach was employed for the reconstruction of the vapor-liquid interface and the amount of liquid condensed was evaluated under different operational conditions, i.e., channel dimensions, mass flow rate and heat load from the wall. The results obtained from the CFD simulations were compared with the predictions from classical correlation and showed good agreement.

Palavras-chave:

DOI: 10.5151/chemeng-cobeq2014-1856-17198-141476

Referências bibliográficas

• [1] ANSYS Fluent. Theory guide v15.0, Canonsburg, PA, USA, 2013.
• [2] CHEN, C.-K.; LIN, Y.-T. Laminar film condensation from a downward-flowing steam-air mixture onto a horizontal circular tube. Appl. Math. Model., v. 33, p. 1944-1956, 2009.
• [3] GE, M.; ZHAO, J.; WANG, S. Experimental investigation of steam condensation with high concentration of CO2 on a horizontal tube. Appl. Therm. Eng., v. 61, p. 334-343, 2013.
• [4] HALOUANI, K.; AYADI, A.; EL HALOUANI, F.; FEIDT, M. Étude hydrodynamique et thermique de la condensation en film à l''intérieur d''un tube horizontal, Rev. Gén. Therm., v. 36, p. 655-665, 1997.
• [5] INCROPERA, F. P.; BERGMAN, T. L.; DEWITT, D. P. Fundamentos de transferência de calor e de massa. 6. ed. Rio de Janeiro: LTC, 2008.
• [6] LEE, W. H. A pressure iteration scheme for two-phase modeling. Technical Report LA-UR 79-975, Los Alamos Scientific Laboratory, Los Alamos, New Mexico, 1979.
• [7] LEE, H.; MUDAWAR, I.; HASAN, M. M. Flow condensation in horizontal tubes. Int. J. Heat Mass Tran, v. 66, p. 31-45, 2013.
• [8] MARTO, P. J. Film condensation heat transfer measurements on horizontal tubes: problems and progress. Exp. Therm. Fluid Sci., v. 5, p. 556-569, 1992.
• [9] SARMA, A. S. P.; SARMA, P. K.; APPARAW, K. V. An empirical correlation for condensation heat transfer under one component stratified flow conditions, Can. J. Chem. Eng., v. 50, p. 541-543, 1972.
• [10] YANG, Z.; PENG, X. F.; YE, P. Numerical and experimental investigation of two-phase flow during boiling in a coiled tube. Int. J. Heat Mass Tran., v. 51, p. 1003-1016, 2008.

Como citar:

PADOIN, N.; SOARES, C.; "CFD MODELING OF STEAM CONDENSATION IN INDUSTRIAL PIPES", p-12904-12911. In: Anais do XX Congresso Brasileiro de Engenharia Química - COBEQ 2014 [= Blucher Chemical Engineering Proceedings, v.1, n.2]. São Paulo: Blucher, 2015.
ISSN 23591757, DOI 10.5151/chemeng-cobeq2014-1856-17198-141476