Application of volume-weighted skew-upwind differencing to thermal and fluid mixing in the cold leg and downcomer of a PWR [electronic resource]
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| Online Access: |
Online Access |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Argonne, Ill. : Oak Ridge, Tenn. :
Argonne National Lab ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1983.
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| Subjects: |
| Abstract: | Upwind differencing has been the most common numerical scheme used in computational fluid flow and heat transfer in past years. However, the numerical diffusion induced by the use of upwind differencing can be significant in problems involving thermal mixing. Thermal and fluid mixing in a pressurized water reactor during high pressurized coolant injection is a typical example where numerical diffusion is significant. An improved volume-weighted skew-upwind differencing is used here to reduce numerical diffusion without overshooting or undershooting which is the major defect of original skew-upwind differencing proposed by Raithby. The basic concept of volume-weighted skew-upwind differencing is shown. Computations were performed using COMMIX-1B, an extended version of the COMMIX-1A. The experiment analyzed here is test No. 1 of the SAI experiment. |
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| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 01/01/1983. "conf-831047-21" "DE83014696" American Nuclear Society winter meeting, San Francisco, CA, USA, 30 Oct 1983. Chen, B.C.J.; Sha, W.T.; Chen, F.F.; Domanus, H.M.; Lyczkowski, R.W.; Miao, C.C. |
| Physical Description: | Pages: 7 : digital, PDF file. |