NUMERICAL ANALYSIS OF LAMINAR MIXED CONVECTION IN HORIZONTAL INTERNALLY FINNED TUBES.

Type of article: Article

Summary

STEADY, LAMINAR, MIXED CONVECTION IN THE FULLY DEVELOPED REGION OF HORIZONTAL INTERNALLY FINNED TUBES IS INVESTIGATED FOR THE CASE OF UNIFORM HEAT INPUT AXIALLY AND UNIFORM WALL TEMPERATURE CIRCUMFERENTIALLY. THE FLUID FLOW AND HEAT TRANSFER CHARACTERISTICS ARE FOUND TO BE DEPENDENT ON A MODIFIED GRASHOF NUMBER, PRANDTL NUMBER, NUMBER OF FINS AND THE RELATIVE FIN HEIGHT. GOVERNING DIFFERENTIAL EQUATIONS ARE SOLVED NUMERICALLY. INTERNAL FINNING IS FOUND TO RETARD THE ONSET OF SIGNIFICANT FREE CONVECTIVE EFFECTS AND TO SUPPRESS THE ENHANCEMENTS IN FRICTION FACTOR AND NUSSELT NUMBER COMPARED TO SMOOTH TUBES.

Details

Original title: NUMERICAL ANALYSIS OF LAMINAR MIXED CONVECTION IN HORIZONTAL INTERNALLY FINNED TUBES.
Record ID : 1991-0125
Languages: English
Source: International Journal of Heat and Mass Transfer - vol. 33 - n. 7
Publication date: 1990/07

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Indexing

Themes: Heat transfer
Keywords: Internal fin; Horizontal tube; Finned tube; Extended surface; Calculation; Heat transfer; Convection