Numerical analysis of laminar forced convection in the entrance region of tubes with longitudinal internal fins

Journal Article · Sun May 01 04:00:00 EDT 1988 · Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.3250485· OSTI ID:5465482

Rustum, I M; Soliman, H M ^[1]

---

1. Univ. of Manitoba, Winnipeg (Canada)

Steady, laminar, forced convection heat transfer in the thermal entrance region of internally finned tubes is investigated numerically for the case of fully developed hydrodynamics using the uniform heat input axially with uniform wall (tube fins) temperature cross-sectionally and uniform wall temperature axially and cross-sectionally thermal boundary conditions. Results are presented for 16 geometries including the local Nusselt number and developing length corresponding to each boundary condition. These results indicate that internal finning influences the thermal development in a complicated way, which makes it inappropriate to extend the smooth tube results to internally finned tubes on a hydraulic diameter basis.

• OSTI ID: 5465482
• Journal Information: Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 110:2; ISSN 0022-1481; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
BOUNDARY CONDITIONS
CONVECTION
ENERGY TRANSFER
FINS
FLUID FLOW
FLUID MECHANICS
FORCED CONVECTION
HEAT EXCHANGERS
HEAT TRANSFER
HYDRODYNAMICS
LAMINAR FLOW
MASS TRANSFER
MATHEMATICS
MECHANICS
NUMERICAL ANALYSIS
NUSSELT NUMBER
STEADY FLOW
TUBES