Heat transfer and thermal treatment processes in subterrene-produced glass hole linings
Glass-forming and thermal treatment processes for the glass liners of bore holes produced by Subterrene rock-melting penetrators are considered. Analytical and numerical calculations of the radial temperature distributions and glass cooling rates are reported for the glass-like liners created by laboratory penetrators operating in local Los Alamos tuff and basalot. The temperature calculations are compared with experimenotal data. The cooling rate at the inside surface of othe glass liner is strongly influenced by the penetrator afterbody and stem design. To minimize residual stresses in the cooled glass, a qualitative correlaotion is found between this cooling rate and othe thermal properties of the parent rock. The magnitude of residual strains and stresses in glass produced by laboratory penetrators is estimated. (auth)
- Research Organization:
- Los Alamos Scientific Lab., N.Mex. (USA)
- DOE Contract Number:
- W-7405-ENG-36
- NSA Number:
- NSA-29-024119
- OSTI ID:
- 4309528
- Report Number(s):
- LA--5502-MS
- Country of Publication:
- United States
- Language:
- English
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