Breakup of melt jets as pre-condition for premixing: Modeling and experimental verification

Bürger, M.; Cho, S.H.; Berg, Eberhard von; Schatz, A.

doi:10.1016/0029-5493(94)00875-y

Cited by 52 publications

(21 citation statements)

References 6 publications

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“…Ambient Weber number (We a ) used in this study is to maintain the similar terminology of earlier researchers which makes easier for data comparison. There are several jet breakup regimes identified with increasing injection velocities or Weber number (Ginsberg, 1985;Bürger et al, 1995). It varies from surface tension influenced axisymmetric regime at lower velocities to atomization zone/severe fragmentation at higher velocities.…”

Section: Jet Breakup Patternmentioning

confidence: 99%

“…These leading edge instabilities are recognized as Taylor instabilities whose occurrence depends on the strong enough deceleration forces (Bürger et al, 1995).…”

Section: Jet Breakup Patternmentioning

confidence: 99%

“…Taylor instability may occur at the leading edge due to deceleration of the jet in surrounding medium (Bürger et al, 1995). After the jet enters into water, there is continuous stripping from the jet surface which causes the thinning 3 / 24 of jet and finally the coarse breakup of a coherent core may occur.…”

Section: Introductionmentioning

confidence: 99%

“…Melt jet fragmentation, modes of breakup and jet-breakup length has been studied previously by many investigators, experimentally and numerically (Bürger et al, 1995;Wang et al, 1989;Berg et al, 1993;Nishimura et al, 1999;Bang et al, 2003). Despite of many experiments and numerical work done on liquid-liquid systems, it has not yielded to a sufficient understanding of the fragmentation process.…”

Section: Introductionmentioning

confidence: 99%

“…The breakup lengths and the transition between regimes are quantified in terms of Weber and Reynolds' numbers. Bürger et al (1995) used Ambient Weber number (We a =ρ l V 2 D⁄σ) for jet breakup study, where density (ρ l ) is of ambient liquid: V, D and σ are velocity, jet diameter and surface tension respectively. Influence of surface tension is dominant at lower injection velocities whereas the jet enters into an atomization regime at higher velocities, characterized by the spray production due to intensive stripping of very small size particles from the jet surface.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A numerical simulation of jet breakup in melt coolant interactions

Thakre

Manickam

2015

Annals of Nuclear Energy

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During a hypothetical severe accident of a light water reactor (LWR), molten corium could fall in the form of jet into a water pool. The jet fragmentation is crucial process during fuel coolant interactions (FCI) which fragment into droplets and disperse in the coolant, and it may cause a steam explosion. This paper deals with a study of computational fluid dynamics KEYWORDS:Fuel-coolant interactions, melt jet instability melt jet fragmentation, jet breakup length.

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Section: Jet Breakup Patternmentioning

confidence: 99%

“…These leading edge instabilities are recognized as Taylor instabilities whose occurrence depends on the strong enough deceleration forces (Bürger et al, 1995).…”

Section: Jet Breakup Patternmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A numerical simulation of jet breakup in melt coolant interactions

Thakre

Manickam

2015

Annals of Nuclear Energy

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Molten Drop to Coolant Heat Transfer During Premixing of Fuel Coolant Interaction

Mahapatra

Datta

Chakravarty

et al. 2017

Energy, Environment, and Sustainability

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Thermal hydraulic considerations of nuclear reactor systems: Past, present and future challenges

Yeoh

2019

Exp. Comput. Multiph. Flow

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Thermal hydraulic analysis of nuclear reactor core and its associated systems can be performed using analysis system, subchannel or computational fluid dynamics (CFD) codes to estimate the different thermal hydraulic safety margins. The safety margins and operating power limits under different conditions of the primary as well as secondary cooling system such as the system pressure, coolant inlet temperature, coolant flow rate, and thermal power and its distributions are considered as key parameters for thermal hydraulic analysis. Considering the complexity of rod bundle geometry, boiling heat transfer and different turbulent scales bring about the many challenges in performing the thermal hydraulic analysis to ensure the safe design and operation of nuclear reactor systems under normal and abnormal conditions. A comprehensive review is presented of past, present and future challenges in state-of-the-art thermal hydraulic analysis covering various aspects of experimental, analytical and computational approaches.

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Breakup of melt jets as pre-condition for premixing: Modeling and experimental verification

Cited by 52 publications

References 6 publications

A numerical simulation of jet breakup in melt coolant interactions

A numerical simulation of jet breakup in melt coolant interactions

Molten Drop to Coolant Heat Transfer During Premixing of Fuel Coolant Interaction

Thermal hydraulic considerations of nuclear reactor systems: Past, present and future challenges

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