A Critical Review of the DSM and HBM Approach for the CHF Prediction
D. K. Chandrakera, A. K. Vishnoib, P. K. Vijayanc and D. Sahad
Bhabha Atomic Research Centre, Mumbai 400 085, India.
adineshkc@barc.gov.in
balokv@barc.gov.in
cvijayanp@barc.gov.in
ddsaha@barc.gov.in
ABSTRACT
Critical Heat Flux (CHF) is an important parameter which dictates the thermal design of various heating systems most importantly, the nuclear reactor systems where the potential for the power generation is immense but the removal of heat poses a prime limitation in achieving very high power. Two methods have emerged in the literature for the application of CHF models. These are Direct Substitution Method (DSM) and Heat Balance Method (HBM). Among the thermal hydraulic community, the suitability of the application of these two methods under various conditions has been debated and this has lead to various recommendations by the researchers. However, a generally accepted guideline does not exist as to when to apply these methods. In the present paper, a critical review of the DSM and HBM will be carried out and recommendation of various thermal hydraulic experts will be discussed. Also, assessment of these methods with the experimental data base has been carried out in this paper.
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