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The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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College students help develop waste-measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
Su-Jong Yoon, Gilles J. Youinou (INL)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 482-492
The Computational Fluid Dynamics (CFD) modeling of wire-wrapped fuel assembly is challenging due to the geometric complexity and many contacts between the wire and fuel rod. To obtain the reliable and accurate predictions in pressure drop, velocity and temperature fields of wire-wrapped geometry, the uncertainty of CFD model should be identified and minimized. The present study conducted the sensitivity tests of pressure drop, velocity and temperature profile to the mesh density, boundary layer mesh and turbulence model by employing a commercially available CFD software, STAR-CCM+ version 12.06.010. The fluid-only and conjugate heat transfer models with 7-pin fuel assembly were adopted to find the baseline model parameters for the full geometry modeling with 217 pins. The CFD results show that the size of mesh and presence of boundary layer mesh play an important role in predictions of the pressure drop. The effects of mesh size, boundary layer mesh and turbulence model on the peak temperature of fluid and cladding wall were not significant. The fluid-only model with closed-gap approach could overestimate the peak temperature around the contacts.