THAI experimental research on hydrogen risk and source term related safety systems

Gupta, Sanjeev; Freitag, M.; Poß, G.

doi:10.1007/s11708-021-0789-1

Cited by 9 publications

(1 citation statement)

References 14 publications

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“…8 Phenomenon related to hydrogen distribution was studied in the THAI facility in the frame of the OECD/NEA ISP-47 project, including gas release, stratification, and wall/bulk condensation, the results are used for validation and improvement of safety analysis codes. 9 It can be concluded from the experimental work that the major phenomenon which would influence hydrogen distribution in the containment of buoyant jet conditions are identified to be the initial momentum, natural convection, steam condensation, and gas density stratification. 10 Plenty of numerical simulations and modeling studies have been carried out on the basis of experimental data.…”

Section: Introductionmentioning

confidence: 99%

Analytical investigation of hydrogen distribution with steam condensation in confined vessel

Jiang

Tong

et al. 2022

Intl J of Energy Research

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Summary A one‐dimensional model was developed to predict the hydrogen distribution in a confined vessel with steam condensation. The model consists of two parts, one for the calculation of buoyant jet motion characteristics and the other for the hydrogen volume fraction prediction. First, a set of partial differential equations that can calculate the velocity, characteristic length, and condensation volume fraction at different heights of the jet centerline was established to represent the effect of buoyant jet and steam condensation on hydrogen distribution. Subsequently, the hydrogen distribution model based on buoyancy and Froude number was modified by introducing Reynolds number and condensation volume fraction, and expression of dimensionless buoyancy η was obtained by fitting with Shanghai Jiao Tong University (SJTU) gas mixtures injection experiment. Velocity data obtained from the steam injection test conducted by NASA was used to verify the first part, and the relative error of axis velocity is less than ±20%. SJTU experimental data and TOSQAN experimental data were used to verify the proposed model, the calculated volume fraction is in good agreement with experimental data with the maximum error of less than ±30%, which means that the model can be used to predict the hydrogen distribution in the containment above the break location with the condition of steam condensation.

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Section: Introductionmentioning

confidence: 99%