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STABILIZED TURBULENT FLUID FRICTION AND HEAT TRANSFER IN CIRCULAR TUBES WITH INTERNAL SAND TYPE ROUGHNESS AT MODERATE PRANDTL NUMBERS.

Author(s) : VULCHANOV N. L., ZIMPAROV V. D.

Type of article: Article

Summary

A MIXING LENGTH TYPE MODEL IS PROPOSED AND NUMERICAL RESULTS ARE REPORTED FOR THE FANNING FRICTION FACTOR AND THE HEAT TRANSFER COEFFICIENT -THE NUSSELT NUMBER -FOR HYDRODYNAMICALLY AND THERMALLY STABILIZED SINGLE PHASE INCOMPRESSIBLE TURBULENT FORCED CONVECTION FLOW IN A ROUND TUBE WITH INTERNALLY SAND-ROUGHENED WALLS FOR MODERATE PRANDTL NUMBERS. BOTH CONSTANT WALL HEAT FLUX AND WALL TEMPERATURE BOUNDARY CONDITIONS ARE SIMULATED. A COMPARISON BETWEEN PRESENT RESULTS AND OTHER EXPERIMENTAL AND NUMERICAL DATA AVAILABLE INDICATES BETTER AGREEMENT COMPARED TO CALCULATIONS PUBLISHED EARLIER.

Details

  • Original title: STABILIZED TURBULENT FLUID FRICTION AND HEAT TRANSFER IN CIRCULAR TUBES WITH INTERNAL SAND TYPE ROUGHNESS AT MODERATE PRANDTL NUMBERS.
  • Record ID : 1989-1752
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 32 - n. 1
  • Publication date: 1989

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