Search Results - "Williamson, R L"

Multidimensional multiphysics simulation of nuclear fuel behavior by Williamson, R.L., Hales, J.D., Novascone, S.R., Tonks, M.R., Gaston, D.R., Permann, C.J., Andrs, D., Martineau, R.C.

“…Nuclear fuel operates in an environment that induces complex multiphysics phenomena, occurring over distances ranging from inter-atomic spacing to meters, and…”
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Enhancing the ABAQUS thermomechanics code to simulate multipellet steady and transient LWR fuel rod behavior by Williamson, R.L.

“…► The ABAQUS thermomechanics code is enhanced to enable simulation of nuclear fuel behavior. ► Comparisons are made between discrete and smeared fuel pellet…”
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Multidimensional multiphysics simulation of TRISO particle fuel by Hales, J.D., Williamson, R.L., Novascone, S.R., Perez, D.M., Spencer, B.W., Pastore, G.

“…Multidimensional multiphysics analysis of TRISO-coated particle fuel using the BISON finite element nuclear fuels code is described. The governing equations…”
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Uncertainty and sensitivity analysis of fission gas behavior in engineering-scale fuel modeling by Pastore, Giovanni, Swiler, L.P., Hales, J.D., Novascone, S.R., Perez, D.M., Spencer, B.W., Luzzi, L., Van Uffelen, P., Williamson, R.L.

“…The role of uncertainties in fission gas behavior calculations as part of engineering-scale nuclear fuel modeling is investigated using the BISON fuel…”
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Analysis of fuel rod behavior during loss-of-coolant accidents using the BISON code: Cladding modeling developments and simulation of separate-effects experiments by Pastore, G., Williamson, R.L., Gardner, R.J., Novascone, S.R., Tompkins, J.B., Gamble, K.A., Hales, J.D.

“…BISON is a finite-element based, multidimensional fuel performance code developed at Idaho National Laboratory. In this paper, we present BISON modeling…”
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Asymptotic expansion homogenization for multiscale nuclear fuel analysis by Hales, J.D., Tonks, M.R., Chockalingam, K., Perez, D.M., Novascone, S.R., Spencer, B.W., Williamson, R.L.

“…[Display omitted] •Review of AEH equations.•Calculation of correct solutions to standard problems.•Application of AEH to cladding and fuel.•Demonstration of…”
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Entrainment in high-velocity, high-temperature plasma jets. Part I: experimental results by Fincke, J.R., Crawford, D.M., Snyder, S.C., Swank, W.D., Haggard, D.C., Williamson, R.L.

“…The development of a high-velocity, high-temperature argon plasma jet issuing into air has been investigated. In particular the entrainment of the surrounding…”
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Residual stresses in convoluted oxide scales by Wright, J.K., Williamson, R.L., Renusch, D., Veal, B., Grimsditch, M., Hou, P.Y., Cannon, R.M.

“…Alumina scales that grow during oxidation of FeCrAl alloys can develop a convoluted morphology. Although convolution relieves the overall growth stress, high…”
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Analysis of transient fission gas behaviour in oxide fuel using BISON and TRANSURANUS by Barani, T., Bruschi, E., Pizzocri, D., Pastore, G., Van Uffelen, P., Williamson, R.L., Luzzi, L.

“…The modelling of fission gas behaviour is a crucial aspect of nuclear fuel performance analysis in view of the related effects on the thermo-mechanical…”
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3D modeling of missing pellet surface defects in BWR fuel by Spencer, B.W., Williamson, R.L., Stafford, D.S., Novascone, S.R., Hales, J.D., Pastore, G.

“…•A global/local analysis procedure for missing pellet surface defects is proposed.•This is applied to defective BWR fuel under blade withdrawal and high power…”
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Analysis of fuel rod behavior during loss-of-coolant accidents using the BISON code: Fuel modeling developments and simulation of integral experiments by Pastore, G., Gamble, K.A., Williamson, R.L., Novascone, S.R., Gardner, R.J., Hales, J.D.

“…In the first part of this work, we discussed BISON fuel performance code developments for Zircaloy cladding behavior under loss-of-coolant accident (LOCA)…”
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A demonstration of melt rate control during VAR of Cracked electrodes by WILLIAMSON, R. L, BEAMAN, J. J, MELGAARD, D. K, SHELMIDINE, G. J, PATEL, A. D, ADASCZIK, C. B

“…A particularly challenging problem associated with vacuum arc remelting occurs when trying to maintain accurate control of electrode melt rate as the melt zone…”
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Entrainment in high-velocity, high-temperature plasma jets.: Part II: computational results and comparison to experiment by Williamson, R.L., Fincke, J.R., Crawford, D.M., Snyder, S.C., Swank, W.D., Haggard, D.C.

“…The development of a turbulent high-velocity, high-temperature argon plasma jet issuing into air has been computationally modeled using the computer program…”
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Model based gap and melt rate control for VAR of Ti-6Al-4V by BEAMAN, J. J, WILLIAMSON, R. L, MELGAARD, D. K, SHELMIDINE, G. J, HAMEL, J. C

“…A new controller has been designed for vacuum arc remelting titanium alloys based on an accurate, low order, nonlinear, melting model. The controller adjusts…”
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The US Department of Energy’s high temperature reactor research and development program – Progress as of 2019 by Gougar, H.D., Petti, D.A., Demkowicz, P.A., Windes, W.E., Strydom, G., Kinsey, J.C., Ortensi, J., Plummer, M., Skerjanc, W., Williamson, R.L., Wright, R.N., Li, D., Caponiti, A., Feltus, M.A., O'Connor, T.J.

“…•The High Temperature Gas-Cooled Reactor is a relatively mature technology; deployable within a decade.•US Department of Energy sponsorship of HTGR technology…”
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Advanced multiphysics coupling for LWR fuel performance analysis by Hales, J.D., Tonks, M.R., Gleicher, F.N., Spencer, B.W., Novascone, S.R., Williamson, R.L., Pastore, G., Perez, D.M.

“…•Overviews the BISON nuclear fuel performance analysis code.•Discusses loose and tight coupling approaches applied to thermomechanics.•Outlines coupling to the…”
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Numerical analysis of surface cracks at regions of curvature in oxide scales by WILLIAMSON, R. L, WRIGHT, J. K, STEFFLER, E. D, CANNON, R. M

“…Finite element simulations are used to examine surface cracks at regions of local curvature (corners or convolutions) in protective oxide scales. Stresses are…”
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Successful intrauterine insemination of Eld's deer (Cervus eldi thamin) with frozen–thawed spermatozoa by Monfort, S L, Asher, G W, Wildt, D E, Wood, T C, Schiewe, M C, Williamson, L R, Bush, M, Rall, W F

“…This study tested the efficacy of assisted reproduction (synchronization of oestrus and intrauterine artificial insemination (AI)) in contributing to the…”
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Numerical study of the relative importance of turbulence, particle size and density, and injection parameters on particle behavior during thermal plasma spraying by WILLIAMSON, R. L, FINCKE, J. R, CHANG, C. H

“…Numerical modeling is used to systematically examine the effects of turbulence, injection, and particle characteristics on particle behavior during thermal…”
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Mapping of the residual stress distribution in a brazed zirconia-iron joint by Wang, X.-L., Hubbard, C.R., Spooner, S., David, S.A., Rabin, B.H., Williamson, R.L.

“…Neutron diffraction was used to study the residual strain (stress) distribution in a zirconia iron joint. The cylindrical specimen was obtained by brazing…”
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