Core draining: neutronics, fluid dynamics, and heat transfer Main - - PowerPoint PPT Presentation

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core draining neutronics fluid dynamics and heat transfer
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Core draining: neutronics, fluid dynamics, and heat transfer Main - - PowerPoint PPT Presentation

Feb 11, 2023 168 likes •657 views

manuele.aufiero@milanomultiphysics.com ThorCon review meeting July 24-26 Hood River, OR Core draining: neutronics, fluid dynamics, and heat transfer Main goals of this specific study 1. Quantify the time required to complete the drain 2.

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Core draining: neutronics, fluid dynamics, and heat transfer

ThorCon review meeting July 24-26 Hood River, OR

manuele.aufiero@milanomultiphysics.com

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SLIDE 2

Draining modeling and simulation

ThorCon review meeting

Main goals of this specific study

  • 1. Quantify the time required to complete the drain
  • 2. Assess the reactvity loss curve during draining
  • 3. Evaluate the temperature evolution in the drain

tanks, while decay heat is dissipated

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SLIDE 3

Draining modeling and simulation

ThorCon review meeting

Draining simulation

  • 1. Quantify the time required to complete the drain
  • 2. Assess the reactvity loss curve during draining
  • 3. Evaluate the temperature evolution in the drain

tanks, while decay heat is dissipated

➔ Analytical estimates via pressure drop correlations

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SLIDE 4

Draining modeling and simulation

ThorCon review meeting

Draining simulation

  • 1. Quantify the time required to complete the drain
  • 2. Assess the reactvity loss curve during draining
  • 3. Evaluate the temperature evolution in the drain

tanks, while decay heat is dissipated

➔ Analytical estimates via pressure drop correlations

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SLIDE 5

Draining modeling and simulation

ThorCon review meeting

Draining simulation

  • 1. Quantify the time required to complete the drain
  • 2. Assess the reactvity loss curve during draining
  • 3. Evaluate the temperature evolution in the drain

tanks, while decay heat is dissipated

➔ Analytical estimates via pressure drop correlations ➔ Numerical calculations via CFD-corrected correl. ➔ Full Computational Fluid Dynamics simulation

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Draining modeling and simulation

ThorCon review meeting

Draining simulation

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Draining modeling and simulation

ThorCon review meeting

Draining simulation

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Draining modeling and simulation

ThorCon review meeting

Draining simulation

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Draining modeling and simulation

ThorCon review meeting

Draining simulation

Equivalent-area CFD simulation (VoF in OpenFOAM)

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Draining modeling and simulation

ThorCon review meeting

Draining simulation

Equivalent-area CFD simulation (VoF in OpenFOAM)

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Draining modeling and simulation

ThorCon review meeting

Draining simulation

Equivalent-area CFD simulation (VoF in OpenFOAM)

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Draining modeling and simulation

ThorCon review meeting

Draining simulation

Equivalent-area CFD simulation (VoF in OpenFOAM)

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SLIDE 13

Draining modeling and simulation

ThorCon review meeting

Draining simulation

Equivalent-area CFD simulation (VoF in OpenFOAM)

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SLIDE 14

Draining modeling and simulation

ThorCon review meeting

Draining simulation

Equivalent-area CFD simulation (VoF in OpenFOAM)

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Draining modeling and simulation

ThorCon review meeting

Draining simulation

Equivalent-area CFD simulation (VoF in OpenFOAM)

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Draining modeling and simulation

ThorCon review meeting

Draining simulation - CFD simulation

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Draining modeling and simulation

ThorCon review meeting

Draining simulation - CFD simulation

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Draining modeling and simulation

ThorCon review meeting

Draining simulation - pressure drop

Pressure drop decomposition

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Draining modeling and simulation

ThorCon review meeting

Draining simulation

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Draining modeling and simulation

ThorCon review meeting

Draining simulation - results - flow rate

Salt drain completes in 10-12 minutes after opening

  • f the freeze valves
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Draining modeling and simulation

ThorCon review meeting

Draining simulation - results - salt volume

Salt drain completes in 10-12 minutes after opening

  • f the freeze valves
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Draining modeling and simulation

ThorCon review meeting

Main goals and tools of the study

  • 1. Quantify the time required to complete the drain
  • 2. Assess the reactvity loss curve during draining
  • 3. Evaluate the temperature evolution in the drain

tanks, while decay heat is dissipated

➔ Monte Carlo neutron transport simulations

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Draining modeling and simulation

ThorCon review meeting

Reactivity evolution

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Draining modeling and simulation

ThorCon review meeting

Reactivity evolution - rho vs fuel height

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Draining modeling and simulation

ThorCon review meeting

Reactivity evolution - rho vs time

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Draining modeling and simulation

ThorCon review meeting

Reactivity evolution - residual fiss. Pow. profile

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Draining modeling and simulation

ThorCon review meeting

Reactivity evolution - residual fiss. Pow. profile

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Draining modeling and simulation

ThorCon review meeting

Reactivity evolution - residual fiss. Pow. profile

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Draining modeling and simulation

ThorCon review meeting

Drain tank heat transfer study

  • 1. Quantify the time required to complete the drain
  • 2. Assess the reactvity loss curve during draining
  • 3. Evaluate the temperature evolution in the drain

tanks, while decay heat is dissipated

➔ Analytical estimates via view factor approach

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SLIDE 30

Draining modeling and simulation

ThorCon review meeting

Drain tank heat transfer study

  • 1. Quantify the time required to complete the drain
  • 2. Assess the reactvity loss curve during draining
  • 3. Evaluate the temperature evolution in the drain

tanks, while decay heat is dissipated

➔ Analytical estimates via view factor approach

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SLIDE 31

Draining modeling and simulation

ThorCon review meeting

Drain tank heat transfer study

  • 1. Quantify the time required to complete the drain
  • 2. Assess the reactvity loss curve during draining
  • 3. Evaluate the temperature evolution in the drain

tanks, while decay heat is dissipated

➔ Analytical estimates via view factor approach

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SLIDE 32

Draining modeling and simulation

ThorCon review meeting

Drain tank heat transfer study

  • 1. Quantify the time required to complete the drain
  • 2. Assess the reactvity loss curve during draining
  • 3. Evaluate the temperature evolution in the drain

tanks, while decay heat is dissipated

➔ Analytical estimates via view factor approach ➔ Full CFD simulation w/ radiative heat transfer

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Draining modeling and simulation

ThorCon review meeting

Geometry

Simplified drain tank geometry for CFD study

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Draining modeling and simulation

ThorCon review meeting

Geometry

Simplified drain tank geometry for CFD study

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Draining modeling and simulation

ThorCon review meeting

Geometry

Simplified drain tank geometry for CFD study

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Draining modeling and simulation

ThorCon review meeting

CFD - Radiative heat transfer + natural circul.

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Draining modeling and simulation

ThorCon review meeting

CFD - Radiative heat transfer + natural circul.

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Draining modeling and simulation

ThorCon review meeting

CFD - Radiative heat transfer + natural circul.

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Draining modeling and simulation

ThorCon review meeting

CFD - Radiative heat transfer + natural circul.

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Draining modeling and simulation

ThorCon review meeting

CFD - Radiative heat transfer + natural circul.

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Draining modeling and simulation

ThorCon review meeting

CFD - Radiative heat transfer + natural circul.

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Draining modeling and simulation

ThorCon review meeting

CFD - Radiative heat transfer + natural circul.

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Draining modeling and simulation

ThorCon review meeting

CFD - Radiative heat transfer + natural circul.

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Draining modeling and simulation

ThorCon review meeting

CFD + analytical study - Results

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Draining modeling and simulation

ThorCon review meeting

CFD + analytical study - Results

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Draining modeling and simulation

ThorCon review meeting

CFD + analytical study - Results

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Draining modeling and simulation

ThorCon review meeting

CFD + analytical study - Results

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Draining modeling and simulation

ThorCon review meeting

CFD + analytical study - Results