Shannon Entropy Characteristics of Two-phase Flow Density Wave Instability Experiments for 200MW Nuclear Heating Reactor

SHI Lei; ZHANG Zuo-yi; GAO Zu-ying

Volume 25 Issue 1

Feb. 2004

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SHI Lei, ZHANG Zuo-yi, GAO Zu-ying. Shannon Entropy Characteristics of Two-phase Flow Density Wave Instability Experiments for 200MW Nuclear Heating Reactor[J]. Nuclear Power Engineering, 2004, 25(1): 18-21.

Citation:

SHI Lei, ZHANG Zuo-yi, GAO Zu-ying. Shannon Entropy Characteristics of Two-phase Flow Density Wave Instability Experiments for 200MW Nuclear Heating Reactor[J]. Nuclear Power Engineering, 2004, 25(1): 18-21.

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Shannon Entropy Characteristics of Two-phase Flow Density Wave Instability Experiments for 200MW Nuclear Heating Reactor

Institute of Nuclear Energy Technology, Tsinghua University, Beijing, 100084, China

Received Date: 2002-11-08
Rev Recd Date: 2003-03-12

Available Online: 2025-07-29

Publish Date: 2004-02-15

Abstract

Abstract

Based on the information theory, the Shannon entropy characteristics of two-phase flow density wave instability has been studied on the research platform of Chinese 200MW nuclear heating reactor. Experimental data for the inlet pressure drop in the heating channel under 534 different conditions has been obtained by adjusting the heating power, inlet subcooling, operating pressure and other parameters. We find that tests with higher negative Shannon entropy （negentropy） are instable while those with lower negentropy are stable. Like energy used in many other fields, negentropy can be a factor to measure the system stability.
- Two-phase Flow,
- Stability,
- Shannon Entropy