Analysis of heat transfer and fluid flow through a spirally fluted tube using a porous substrate approach
- Ohio State Univ., Columbus, OH (United States)
An innovative approach was opted for modeling the flow and heat transfer through spirally fluted tubes. The model divided the flow domain into two regions. The flutes were modeled as a porous substrate with direction-dependent permeabilities. This enabled modeling the swirl component in the fluted tube. The properties of the porous substrate such as its thickness, porosity, and ratio of the direction-dependent permeabilities were obtained from the geometry of the fluted tube. Experimental data on laminar Nusselt numbers and friction factors for different types of fluted tubes representing a broad range of flute geometry were available. Experimental data from a few of the tubes tested were used to propose a relationship between the permeability of the porous substrate and the flute parameters, particularly the flute spacing. The governing equations were discretized using the Finite Element Method. The model was verified and applied to the other tubes in the test matrix. Very good agreement was found between the numerical predictions and the experimental data. 20 refs., 13 figs., 4 tabs.
- OSTI ID:
- 7125862
- Journal Information:
- Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Vol. 116:3; ISSN 0022-1481
- Country of Publication:
- United States
- Language:
- English
Similar Records
Spirally-fluted tubes and enhanced tubes in confined crossflow. Part 1. Flow inside fluted tubes. Final report, August 1987-September 1990
Pressure drop and heat transfer for spirally fluted tubes including validation of the role of transition
Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
TUBES
FLUID FLOW
HEAT TRANSFER
BOUNDARY CONDITIONS
COMPILED DATA
ENERGY CONSERVATION
FINITE ELEMENT METHOD
PERMEABILITY
POROSITY
VORTEX FLOW
CALCULATION METHODS
DATA
ENERGY TRANSFER
INFORMATION
NUMERICAL DATA
NUMERICAL SOLUTION
420400* - Engineering- Heat Transfer & Fluid Flow
990200 - Mathematics & Computers