On the existence of multiphase thermal detonations

Yuen, W. W.; Theofanous, T.G.

doi:10.1016/s0301-9322(99)00064-6

Cited by 13 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fuel's temperature has to significantly exceed the homogeneous nucleation temperature of water. This process, referred to as Molten Fuel Coolant Interaction (MFCI), has been studied experimentally in the context of larger‐scale industrial process safety in order to understand accident scenarios in nuclear power plants and metal production sites (e.g., Eckhoff, ; Lipsett, ; Yuen & Theofanous, ). In the context of explosive volcanic eruptions, the process has also been studied in different experimental setups.…”

Section: Introductionmentioning

confidence: 99%

Meter‐Scale Experiments on Magma‐Water Interaction

et al. 2018

View full text Add to dashboard Cite

Interaction of magma with groundwater or surface water can lead to explosive phreatomagmatic eruptions. Questions of this process center on effects of system geometry and length and time scales, and these necessitate experiments at larger scale than previously conducted in order to investigate the thermohydraulic escalation behavior of rapid heat transfer. Previous experimental work either realized melt‐water interaction at similar meter scales, using a thermite‐based magma analog in a confining vessel, or on smaller scale using ≃0.4 kg remelted volcanic rock in an open crucible, with controlled premix and a ≃5 J kinetic energy trigger event. The new setup uses 55 kg melt for interaction, and the timing and location of the magma‐water premix can be controlled on a scale up to 1 m. A trigger mechanism is a falling hammer that drives a plunger into the melt (≃28 J kinetic energy). Results show intense interaction ( Lmax≥0.250.3emm2) at relatively low magma/water mass ratio. A video analysis quantifies rate and amount of melt ejection and compares results with those using the same melt in the smaller scale setup. Experiments show that on the meter scale intense interaction can start spontaneously without an external trigger if the melt column above the initial mixing location is larger than 0.3 m. Experiments suggest that buoyant rise of water domains in a melt column could promote explosive interaction. We assess interaction scenarios between introduced water domains and a magma column, some of which could result in eruptions of Strombolian style, promoting brecciation and incorporation of wall rock debris into a magma column.

show abstract

Section: Introductionmentioning

confidence: 99%

Meter‐Scale Experiments on Magma‐Water Interaction

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The resulting analytical complexity of the models, and the progress related to computational capabilities led to start building unsteady 1D and 2D/3D models. It became also clear that models with assumption of instantaneous thermal equilibrium of the fragmented melt and the whole coolant were not physically consistent (either led to small pressures, either needed unrealistic initial conditions, see Yuen and Theofanous, 1999). The difficulty was resolved in two different ways.…”

Section: Short Introduction To Steam Explosionmentioning

confidence: 99%

The challenge of modeling fuel–coolant interaction: Part II – Steam explosion

Meignen

Raverdy

Picchi

et al. 2014

Nuclear Engineering and Design

View full text Add to dashboard Cite

“…The exact mathematical formalism used by Yuen and Theofanous is not reported in [29]. It seems that we use very much the same primitive conservation equations as these authors used.…”

Section: Similarity To and Differences From The Yuen And Theofanous Formalismmentioning

confidence: 99%

“…[6], and this may serve as an upper bound estimate. This was criticized by Yuen and Theofanous [29]. Based on their own experiments, these authors introduced the idea of not only a limited amount of melt but also of a limited amount of coolant participating in the interaction -the so-called micro-interaction concept.…”

Section: Introductionmentioning

confidence: 99%

Detonation waves caused by chemical reactions or by melt-coolant interactions

Multiphase Flow Dynamics 1

View full text Add to dashboard Cite

On the existence of multiphase thermal detonations

Cited by 13 publications

References 17 publications

Meter‐Scale Experiments on Magma‐Water Interaction

Meter‐Scale Experiments on Magma‐Water Interaction

The challenge of modeling fuel–coolant interaction: Part II – Steam explosion

Detonation waves caused by chemical reactions or by melt-coolant interactions

Contact Info

Product

Resources

About