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Natural Convection of a Heat-Generating Fluid within Closed Vertical Cylinders and Spheres

Technical Report ·
DOI:https://doi.org/10.2172/1561139· OSTI ID:1561139
 [1];  [1];  [2]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  2. Monsanto Research Corporation Mound Laboratory, Miamisburg, OH (United States)
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Steady natural convective flow fields were numerically and experimentally characterized for 0.7 Prandtl number fluids having constant, uniformly distributed, internal heat sources. The bounding isothermal walls containing the fluid were considered to be either a sphere or a cylinder of finite height. An instrumented cylinder containing radioactive tritium gas was used to demonstrate experimental and analytical agreement for local temperatures over a range of Grashof numbers. For the spherical geometry, a generalized correlation was obtained for the surface-averaged Nusselt number as a function of a modified Grashof number.
Research Organization:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Monsanto Research Corporation Mound Laboratory, Miamisburg, OH (United States)
Sponsoring Organization:
USDOE; US Energy Research and Development Administration (ERDA)
DOE Contract Number:
AC04-94AL85000; AT(29-1)-789
OSTI ID:
1561139
Report Number(s):
SAND--75-8610; 387889
Country of Publication:
United States
Language:
English

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