Relevant bibliographies by topics / Transition de Stoner

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Transition de Stoner'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Transition de Stoner"

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Stollhoff, Gernot, Andrzej M. Oleś, and Volker Heine. "Stoner exchange interaction in transition metals." Physical Review B 41, no. 10 (1990): 7028–41. http://dx.doi.org/10.1103/physrevb.41.7028.

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Wang, Rui-Ning, Chen-Dong Jin, Hu Zhang, Ru-Qian Lian, Xing-Qiang Shi, and Jiang-Long Wang. "Strain-driven phase transition and spin polarization of Re-doped transition-metal dichalcogenides." Physical Chemistry Chemical Physics 23, no. 16 (2021): 9962–70. http://dx.doi.org/10.1039/d1cp00640a.

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Re-Doped MoX<sub>2</sub> are suitable candidates for phase and band engineering with minute external perturbation. A feasible strain controllably drive 1H ⇔1T<sub>d</sub> transitions, but only tensile strains effectively induce magnetism within the Stoner model.
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Kaiser, A. B., A. M. Oles, and G. Stollhoff. "Volume dependence of the Stoner parameter in transition metals." Physica Scripta 37, no. 6 (1988): 935–39. http://dx.doi.org/10.1088/0031-8949/37/6/019.

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Oleś, A. M., and G. Stollhoff. "Correlation Corrections for the Stoner Parameter of Ferromagnetic Transition Metals." Europhysics Letters (EPL) 5, no. 2 (1988): 175–80. http://dx.doi.org/10.1209/0295-5075/5/2/015.

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Georges, Antoine, and Laurent Laloux. "Normal Helium 3: A Mott–Stoner Liquid." Modern Physics Letters B 11, no. 21n22 (1997): 913–22. http://dx.doi.org/10.1142/s0217984997001122.

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A qualitative picture of normal 3 He is proposed, which brings together the concept of an "almost localized" liquid and the existence of ferromagnetic spin correlations. The range of these correlations is shorter than in paramagnon theory, and the spin fluctuations are never in the critical regime within our approach, even at high pressure. A lattice model is introduced, which illustrates this physical picture. We also demonstrate that a metamagnetic transition in the field-dependent magnetization is not a necessary consequence of a quasilocalized picture.
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JEZIERSKI, A. "INFLUENCE OF LOCAL ENVIRONMENT ON THE MAGNETIC MOMENT IN THE TRANSITION METAL ALLOYS." International Journal of Modern Physics B 07, no. 01n03 (1993): 958–60. http://dx.doi.org/10.1142/s0217979293002079.

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We study the dependence of the magnetic moment on the short range ordering in Pt1−cMnc, Pt1−cCrc, Pt1−cCoc andPd1−cCoc alloys. The electronic density of states for the fcc disordered system is calculated by the TB LMTO-CPA method. The magnetic moment is estimated using the Stoner model, We find that the value of the magnetic moment increases with increasing ordering in the system.
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Fry, J. L., Y. Z. Zhao, P. C. Pattnaik, V. L. Moruzzi, and D. A. Papaconstantopoulos. "Stoner theory of magnetic structure of alternate cubic phases of transition metals." Journal of Applied Physics 63, no. 8 (1988): 4060–62. http://dx.doi.org/10.1063/1.340547.

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Rezania, H., and A. Abdi. "The study of stoner ferromagnetic phase transition of a gapped armchair graphene nanoribbon." Journal of Physics and Chemistry of Solids 111 (December 2017): 383–90. http://dx.doi.org/10.1016/j.jpcs.2017.08.017.

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MAYOU, D., G. TRAMBLY DE LAISSARDIERE, and F. CYROT-LACKMANN. "ELECTRONIC PROPERTIES OF STABLE QUASICRYSTALS CONTAINING TRANSITION ELEMENTS." International Journal of Modern Physics B 07, no. 01n03 (1993): 318–21. http://dx.doi.org/10.1142/s0217979293000676.

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A model describing the electronic structure of transition metal atoms in Hume-Rothery alloys and quasicrystals is constructed. We start from the classical Anderson hamiltonian, and add a potential [Formula: see text] that describes the diffraction of conduction electrons by Bragg planes near the Fermi surface. Strong deviation from the virtual bound state is observed for realistic parameters. Furthermore the scattering of the conduction states by the d-orbitals changes the partial density of conduction states. This results in a contribution to the apparent negative valency of transition elements in Hume-Rothery alloys. The results are systematically compared with ab-initio calculations for a series of Hume-Rothery alloys and are in good agreement. The magnetic properties are discussed and it is shown that in a simple Hartree-Fock scheme the Stoner Criterion does not apply to these systems due to the peculiar sp-d hybridization effects. First results taking correlations into account are also discussed.
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SUN, M. J., G. P. ZHAO, J. LIANG, G. ZHOU, H. S. LIM, and Y. P. FENG. "A HYBRID MODEL ON HYSTERESIS LOOP AND COERCIVITY IN NANOSTRUCTURED PERMANENT MAGNETS." International Journal of Nanoscience 05, no. 04n05 (2006): 627–31. http://dx.doi.org/10.1142/s0219581x06004899.

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A simplified micromagnetic model has been proposed to calculate the hysteresis loops of nanostructured permanent magnets for various configurations, including thin films, exchange-coupled double-layer systems and bulk materials. The reversal part of the hysteresis is based on the Stoner–Wohlfarth coherent rotational model and the coercivity mechanism is due mainly to the motion of the transition region (a domain wall like magnetic moment distribution in the grain boundary). The elements of nucleation and pinning models are also incorporated.
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Dissertations / Theses on the topic "Transition de Stoner"

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Brammall, M. I. "Stoner criteria in transition metal oxides and heavy fermions." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/1648/.

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This thesis is an examination of the uses of mean-field theory in problems of the theory of strongly-correlated electronic systems, particularly to the problem of orbital ordering in transition metal oxides. We will apply mean-field theory to various models for orbital ordering of transition metal oxides, and also show that mean-field theory is not as bad an approximation as it might initially seem. We are also interested modelling superconductivity in heavy fermion systems. We conclude from our modelling on transition metal oxides that the mean-field theory we use based on the Stoner criterion will not be adequate to model such complicated phenomena. We propose an alternate mean-field theory based on non-linear fermionic transformations which we introduce. We suggest further improvements in the form of a non-orthogonal transformation, which we also introduce. As a diversion, we model frustrated antiferromagnetism on a pyrochlore lattice. The particular material is Gd\(_2\)Ti\(_2\)O\(_7\). We show that there are many effects in competition with each other. We conclude with a proposed magnetic structure which appears to be a better fit to experimental data than previous suggestions.
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Piot, Benjamin. "Levée de dégénérescence de spin dans le régime Hall quantique." Phd thesis, Université Joseph Fourier (Grenoble), 2006. http://tel.archives-ouvertes.fr/tel-00125776.

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Ce travail porte sur l'étude de la levée de dégénérescence de spin dans le régime Hall quantique. Des mesures de magnétotransport à très basse température sont mises en oeuvre sur un ensemble d'hétérostructures AlGaAs/GaAs, afin de caractériser la densité d'états électronique sous champ magnétique et les interactions entre électrons. Les interactions d'échange se révèlent être principalement déterminées par la densité électronique, et deviennent de plus en plus importantes lorsque celle-ci diminue dans le domaine (1.10^11-1.10^12cm^-2). Un modèle simple sans paramètre d'ajustement prédit correctement le champ magnétique nécessaire pour observer la levée de dégénérescence de spin, démontrant que celle-ci est le résultat d'une compétition entre le coût de retournement des spins, induit par le désordre<br /> du système, et le gain d'énergie d'échange associé à l'état polarisé en spin. Dans ce modèle, l'énergie Zeeman ne joue aucun rôle, si bien que l'apparition de l'état polarisé en spin dans le plus haut niveau de Landau occupé peut être interprétée comme une transition de Stoner induite par le champ magnétique. Le cas d'une énergie Zeeman non-nulle, abordé en introduisant un champ magnétique supplémentaire dans le plan du gaz électronique bidimensionnel, peut également être décrit dans le cadre de ce modèle sans paramètre d'ajustement, confirmant la validité de l'approche initiale.
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Blower, David. "It's all in the stones, identifying Early Formative Period transition through the incised stone figurines of Valdivia, Ecuador." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ64800.pdf.

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Frølund, Bech Louise. "Treasures in Transition : -On Connecting to Stone." Thesis, Konstfack, Ädellab, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-5605.

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The things we have an intimate connection to, handle, collect, and move around with us, are treasures that we need to hold on to. They are important in coping with the balance of movement and stability in a fast-changing world. This project is an investigation of the relationship between people and objects through the making and handling of stones. I explore why and how we connect intimately with physical objects, how they become treasures to us and what it means. Through digging into the stones, connecting to their story of endurance, change and solidity, and eventually letting them go, I explore the role of touching and paying attention, in making and relating to objects and transformation. The stone objects are made from pieces of rock I have collected while travelling. All of them have been transformed by human hands before I picked them out, and many have been given out and then returned to me. Through this ongoing process of transformation and physical encounters, it is becoming clear to me that connection is not only about solidity and stillness, but also about being part of the transformation. Stone as a material is both solid and changing. I aim to make objects of stone that attract and encourage people to engage with them – to experience the pleasure and groundedness that slowing down, zooming in and getting in touch can offer.
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Plevich, Annika Marie. "A Study of Boundaries and Transitions." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/33439.

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This thesis explores the boundaries and transitions within architecture. What makes a solid boundary? And what blurs the lines of transition in between? Possibilities were explored and limits pushed through the studying of elements such as thickness, transparency, material, texture, and light. The result is an architectural space in which a person can experience nature, while being separate from it. The building becomes a transition into nature while also a part of the landscape. The intent of this thesis is to bring the site together with the thesis idea and program in a cohesive way.<br>Master of Architecture
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Neroorkar, Kshitij D. "Numerical study of turbulence transition models." Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2007m/neroorkar.pdf.

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Akhavan-Alizadeh, Rayhaneh. "An investigation of transition and turbulence in oscillatory Stokes layers." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/32126.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1987.<br>Title as it appeared in M.I.T. Graduate List, June 1987: An investigation of transition and turbulence in oscillatory Stokes flows.<br>Bibliography: leaves 152-155.<br>by Rayhaneh Akhavan-Alizadeh.<br>Ph.D.
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Underhill, David. "The Fauresmith : the transition from the Earlier to Middle Stone Ages in northern South Africa." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/367390/.

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This thesis discusses the Fauresmith of northern South Africa, a stone tool industry believed to contain contemporary Prepared Core Technology, Large Cutting Tools and blades, which is considered transitional between the Earlier and Middle Stone Ages. It further questions what this suggests about the nature of transitions as presently identified in the prehistoric record. Although ‘officially’ abandoned in 1965 the Fauresmith never fell completely from the literature and the last 20 years have seen it firmly re-appear in South African chronologies, and even more worryingly it has recently begun to be utilised as a chronotemporal marker. However, at no stage since Van Riet Lowe’s original publications, some 80 years ago, has it ever been fully described and there still remains no consensus on what the Fauresmith actually is. Presented here for the first time is primary lithic data analysis, attempting to offer the first detailed description of the Fauresmith as a beginning to understanding its place in South African archaeology. In order to achieve this nine Fauresmith sites where chosen that are all significant in both our developing understandings of the Fauresmith and in how it is presently comprehended. The cohesive Fauresmith material is then compared to the later Earlier Stone Age material from the Cave of Hearths bed III and earlier Middle Stone Age from the Cave of Hearths bed IV and Bushman Rock Shelter. Ultimately, doubts are raised as to the validity of the Fauresmith, and although some apparent Fauresmith sites could not be included in the analysis, for various reasons, several occurrences here are identified as mixed through erosive process, including the original Fauresmith type sites. Indeed, this study points attention to how knowledge transferred in an osmosis like manner has hindered our ability to critically comprehend our own methodological constructs. More fundamentally it raises concerns as to how transitions are presently problematised within prehistoric archaeology.
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Moro-Ludeña, David. "An adaptive high order Reynolds-averaged Navier-Stokes solver with transition prediction." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97355.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 219-239).<br>The use of simulation techniques in applied aerodynamics has increased dramatically in the last three decades fostered by the growth in computational power. However, the state of the art discretization in industrial solvers remains nominally second order accurate, which makes them unfeasible to resolve multi-scale phenomena such as turbulence or acoustics, and limits their efficiency in terms of the error per degree of freedom. In recent years, the CFD community has put significant effort into the development of high order methods for fluid dynamics, with the goal of overcoming these barriers. This dissertation focuses on the application of high order hybridizable discontinuous Galerkin schemes to solve the equations that govern compressible turbulent flows. In particular, this thesis describes a novel methodology to adapt the boundary layer mesh to the solution "on the fly", based on a measure of the boundary layer thickness that drives the position of the nodes in the mesh, without changing its topology. The proposed algorithm produces accurate solutions with a reduced number of degrees of freedom, by leveraging the combination of mesh adaptivity with the high order of convergence of the discretization. In addition, the active tracking of the boundary layer reduces the nonlinear stiffness and improves the robustness of the numerical solution. A new shock capturing technique based on the addition of artificial viscosity is developed to handle shocks. The model is driven by a non-dimensional form of the divergence of the velocity, designed so that sub-cell shock resolution is achieved when a high order discretization is used, independently of the element size. The approach is extended to include the effect of transition to turbulence using an envelope eN method. This takes advantage of the structure of the mesh and requires the solution of a surface PDE for the transition criterion, which is discretized using a novel surface hybridizable discontinuous Galerkin scheme. The resulting method can simulate transition to turbulence in attached and separated flows, and can also accommodate long-scale unsteadiness in which the transition location evolves in time.<br>by David Moro-Ludeña.<br>Ph. D.
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Kruhm, Kathryn Elizabeth. "Four Houses: A Language of Transition from Earth to Sky." Thesis, Virginia Tech, 1995. http://hdl.handle.net/10919/36004.

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The thesis of this project is to develop a language of architecture for the design of a rural house. Parameters for this language are specified through program, ideas about living in a country home, and the importance of integrating the building with its site. The parameters are reaffirmed through the materials and elements of architecture. In order to develop a cohesive language, four houses have been designed for four different sites. Each house implements the specified parameters in a manner appropriate to the setting of the surrounding landscape. The houses themselves become a transition between the inside and the outside and between the natural and the man-made. Thus this thesis is: Four Houses - A Language of Transition from Earth to Sky. Our experience-space is necessarily in conflict with the space of nature. The space that nature offers us rises above the ground and is oriented entirely towards the earth's surface. The contrast between the mass of the earth below and the space of the air above, which meet at the surface of the earth, is the primary datum of this (experience) space. Dom H. Van Der Laan, "Architectonic Space" (E.J. Brill, 1983), p. 5<br>Master of Architecture
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Books on the topic "Transition de Stoner"

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Stones left unturned: Law and transitional justice in Burundi. Intersentia, 2010.

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Invariant manifold theory for hydrodynamic transition. Longman Scientific & Technical, 1990.

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Reed, Helen L. Final report for Navier-Stokes simulation of boundary-layer transition. Arizona State University, Dept. of Mechanical and Aerospace Engineering, 1990.

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Sarel, Josette. The Middle-Upper Paleolithic transition in Israel: Technological analysis. John and Erica Hedges, 2004.

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Chaderjian, Neal M. Navier-Stokes simulation of transonic wing flow fields using a zonal grid approach. National Aeronautics and Space Administration, Ames Research Center, 1988.

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Chaderjian, Neal M. Navier-Stokes simulation of transonic wing flow fields using a zonal grid approach. National Aeronautics and Space Administration, Ames Research Center, 1988.

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Chaderjian, Neal M. Navier-Stokes simulation of transonic wing flow fields using a zonal grid approach. National Aeronautics and Space Administration, Ames Research Center, 1988.

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Chaderjian, Neal M. Navier-Stokes simulation of transonic wing flow fields using a zonal grid approach. National Aeronautics and Space Administration, Ames Research Center, 1988.

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Erlebacher, Gordon. Incipient transition phenomena in compressible flows over a flat plate. ICASE, 1986.

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Joslin, Ronald D. Validation of three-dimensional incompressible spatial direct numerical simulation code: A comparison with linear stability and parabolic stability equation theories for boundary-layer transition on a flat plate. Langley Research Center, 1992.

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Book chapters on the topic "Transition de Stoner"

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Wadley, Lyn. "The Use of Space in the Late Middle Stone Age of Rose Cottage Cave, South Africa." In Transitions Before the Transition. Springer US, 2006. http://dx.doi.org/10.1007/0-387-24661-4_15.

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Chalal, M., X. Boucher, G. Marques, and M. A. Girard. "Managing Transition Towards PSS: a Production System Simulation Approach." In The Philosopher's Stone for Sustainability. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32847-3_72.

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Zwick, W. "On a Multigrid Method for the Numerical Solution of Navier-Stokes Equations." In Laminar-Turbulent Transition. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82462-3_85.

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Rey, Emmanuel, Martine Laprise, and Sophie Lufkin. "Urban Brownfields: Origin, Definition, and Diversity." In Neighbourhoods in Transition. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-82208-8_2.

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AbstractBrownfield is a polysemic notion that encompasses a whole range of diverse spaces. Although there is no official definition at the European level, an emerging consensus has arisen around the urban character of brownfields and the need for intervention. Indeed, their location within metropolitan areas represents a strategic opportunity to densify and rejuvenate the urban fabric at the neighbourhood scale. Hence, we propose a definition of urban brownfields that is flexible enough to optimize the potential development of abandoned sites and precise enough to enable framing the discussion. Then, we take a look at the diversity of urban brownfields in European metropolitan areas by briefly explaining the factors that cause a site to become a brownfield and then attempting to classify different types of urban brownfields. The proposed classification aims to create a non-exhaustive reference framework by offering in-depth knowledge of the urban brownfield and regeneration projects phenomenon across Europe, without setting its meaning in stone.
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Marques, J. P., F. Parente, and P. Indelicato. "Relativistic Transition Energies and Radiative Transition Rates for Forbidden Transitions in the 1s 2 2s 2 2p 4 Atomic Configuration for 20 ⩽ Z ⩽ 30." In Atomic Physics at Accelerators: Stored Particles and Fundamental Physics. Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-0946-1_20.

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Papageorgiou, Demetrios T. "Breakup of Cylindrical Jets Governed by the Navier-Stokes Equations." In Transition, Turbulence and Combustion. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1032-7_20.

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Danabasoglu, G., S. Biringen, and C. L. Streett. "A Spectral Multi-Domain Code for the Navier-Stokes Equations." In Instability, Transition, and Turbulence. Springer New York, 1992. http://dx.doi.org/10.1007/978-1-4612-2956-8_27.

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Willoughby, Pamela R. "From the Middle to the Later Stone Age in Eastern Africa." In Sourcebook of Paleolithic Transitions. Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-76487-0_20.

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Tateyama, Takeshi, Koji Kimita, Kentaro Watanabe, Ryosuke Chiba, and Yoshiki Shimomura. "A Service Flow Simulation Method Using Multi-aspect Scene Transition Nets (STNs) Modeling." In The Philosopher's Stone for Sustainability. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32847-3_50.

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Isaacs, Scott, and Kyle Burns. "Transitions and Animations." In Beginning Windows Store Application Development–HTML and JavaScript Edition. Apress, 2013. http://dx.doi.org/10.1007/978-1-4302-5780-6_10.

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Conference papers on the topic "Transition de Stoner"

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Piot, B. A., D. K. Maude, K. J. Friedland, et al. "Magnetic-field-induced Stoner transition in a quantum Hall ferromagnet at high filling factors." In PHYSICS OF SEMICONDUCTORS: 28th International Conference on the Physics of Semiconductors - ICPS 2006. AIP, 2007. http://dx.doi.org/10.1063/1.2730059.

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Birch, N. T. "Navier-Stokes Predictions of Transition, Loss and Heat Transfer in a Turbine Cascade." In ASME 1987 International Gas Turbine Conference and Exhibition. American Society of Mechanical Engineers, 1987. http://dx.doi.org/10.1115/87-gt-22.

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The loss and heat transfer of a turbine cascade are strongly influenced by the location and extent of the transitional boundary layer. In this paper, two approaches are adopted to predict the onset and extent of transition within a 2-D explicit Navier-Stokes solution procedure. In the first, transition is predicted by coupling transition data correlations with an algebraic turbulence model. In the second, a low Reynolds Number one-equation turbulence model is used. Comparison is made with the turbine cascade data of Nicholson et al. (1982). This indicates that the first model gives good predictions of suction surface behaviour but poor predictions on the pressure surface. The model is also difficult to apply in a N-S method. The second model gives good predictions of pressure surface behaviour but consistently predicts transition near the leading edge on the suction surface. The latter is attributed to a Mach Number over-speed and leading edge effects.
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Muthu, Satish, Shanti Bhushan, and D. Keith Walters. "Evaluation of Pressure-Strain Correlation As a Basis for Development of a Physics-Based Transition Onset Marker." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5418.

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Abstract Temporally developing direct numerical simulations (T-DNS) are performed for bypass transition of a zero pressure gradient flat plate boundary layer to understand the interplay between pressure-strain terms and flow instability mechanisms, and to propose and validate a phenomenological hypothesis for the identification of a robust transition onset marker for use in transition-sensitive Reynolds-averaged Navier-Stokes (RANS) computational fluid dynamics (CFD) simulations. Results show that transition initiates at a location where the slow pressure-strain term becomes more dominant than the rapid term in the pre-transitional boundary layer region. The slow term is responsible for the transfer of turbulence energy from the streamwise component to other components, most importantly the wall-normal. The relative magnitudes of the slow and rapid terms can potentially provide a basis for the development of physically meaningful large-scale parameters that can be used as transition onset markers for Reynolds averaged Navier-Stokes (RANS) simulations.
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Routson, Daniel, James Ferguson, John Crepeau, Donald McEligot, and Ralph Budwig. "Reynolds Averaged Navier Stokes Models Compared to Direct Numerical Simulations in an Adverse Pressure Gradient Boundary Layer Over a Flat Plate." In ASME 2013 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fedsm2013-16554.

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In Reynolds-Averaged Navier Stokes (RANS) models simplifying assumptions breakdown in near wall regions. Wall functions/treatments become inaccurate and the homogeneity and isotropy models may not hold. To see the effect that these assumptions have on the validity of boundary layer results in a commercially available RANS code, key boundary layer parameters are compared from laminar, transitional, and fully turbulent RANS results to an existing direct numerical simulation (DNS) simulation for flow over a flat plate with an adverse pressure gradient (APG). Parameters compared include velocity profiles in the free stream, boundary layer thicknesses, skin friction coefficient and the pressure gradient parameter. Results show comparable momentum thickness and pressure gradient parameters between the transition RANS model and the DNS simulation. Differences in the onset of transition between the RANS transition model and DNS are compared as well. These simulations help evaluate the models used in the RANS code. Of most interest is the transition model, a transition shear-stress transport (SST) k–omega model. The RANS code is being used in conjunction with an APG boundary layer experiment being undertaken at the Idaho National Laboratory (INL).
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Huth, M. "Beyond image-finiteness: labelled transition systems as a Stone space." In Proceedings of the 19th Annual IEEE Symposium on Logic in Computer Science, 2004. IEEE, 2004. http://dx.doi.org/10.1109/lics.2004.1319616.

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Pereira, Filipe S., Guilherme Vaz, Luís Eça, and Sébastien Lemaire. "On the Numerical Prediction of Transitional Flows With Reynolds-Averaged Navier-Stokes and Scale-Resolving Simulation Models." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54414.

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The present work investigates the transitional flow around a smooth circular cylinder at Reynolds number Re = 140,000. The flow is resolved using the viscous-flow solver ReFRESCO, and distinct mathematical models are applied to assess their ability to handle transitional flows. The selected mathematical models are the Reynolds-Averaged Navier-Stokes equations (RANS), Scale-Adaptive Simulation (SAS), Delayed Detached-Eddy Simulation (DDES), eXtra Large-Eddy Simulation (XLES) and Partially-Averaged Navier-Stokes (PANS) equations. The RANS equations are supplemented with the k–ω Shear-Stress Transport (SST) with and without the Local Correlation Transition Model (LCTM). The numerical simulations are carried out using structured grids ranging from 9.32 × 104 to 2.24 × 107 cells, and a dimensionless time-step of 1.50 × 10−3. As expected, the outcome demonstrates that transition from laminar to turbulent regime is incorrectly predicted by the k–ω SST model. Transition occurs upstream of the flow separation, which is typical of the supercritical regime and so the flow physics is incorrectly modelled. Naturally, all Scale-Resolving Simulation (SRS) models that rely on RANS to solve the boundary-layer, called hybrid models, will exhibit a similar trend. On the other hand, mathematical models capable to resolve part of the turbulence field in the boundary layer (PANS) lead to a better agreement with the experimental data. Furthermore, the k–ω SST LCTM is also able to improve the modelling accuracy when compared to the k–ω SST. Therefore, it might be a valuable engineering tool if its computational demands are considered (in the RANS context). Therefore, the results confirm that the choice of the most appropriate mathematical model for the simulation of turbulent flows is not straightforward and it may depend on the details of the flow physics.
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7

Steelant, J., and E. Dick. "Prediction of By-Pass Transition by Means of a Turbulence Weighting Factor: Part II — Application on Turbine Cascades." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-030.

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To simulate transitional heat transfer experiments in turbine cascades, the conditionally averaged Navier-Stokes equations are used. To cover both the physics of freestream turbulence and the intermittent flow behaviour during transition, a turbulence weighting factor τ is used. A transport equation for this factor, constructed for low Mach number flows, is extended to cope with compressibility. Compressibility in combination with turbulence level and pressure gradient are prime factors for the correct evaluation of the transitional zone. The method is validated on transitional heat transfer measurements in a linear turbine cascade at typical operational conditions.
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8

Steelant, J., and E. Dick. "Prediction of By-Pass Transition by Means of a Turbulence Weighting Factor: Part I — Theory and Validation." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-029.

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The classical intermittency factor γ for quantifying transition is redefined and extended to enable the modelling of by-pass transition. Therefore, a new parameter, the turbulence weighting factor τ, is introduced to cover both the physics of freestream turbulence diffusion and of turbulent spots. A transport equation is presented for the τ-factor including convective, diffusive, production and sink terms. In combination with the conditioned Navier-Stokes equations, this leads to improvements in the calculation of flow characteristics in both the transitional layer and the freestream.
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9

Yershov, Sergiy, and Viktor Yakovlev. "Validation of the PTM Transition Model on a 3D Flow Through a Turbine Cascade." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65001.

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This study presents a numerical simulation of a 3D viscous subsonic flow in the VKI-Genoa turbine cascade taking into account the laminar-turbulent transition. The numerical simulation is performed using the Reynolds-averaged Navier-Stokes (RANS) equations and the low-Reynolds k-ω SST turbulence model. The Langtry’s algebraic Production Term Modification (PTM) model is applied for modeling the laminar-turbulent transition. The governing equations are integrated using the second-order accurate Godunov’s type implicit ENO scheme. Computations of both fully turbulent and transitional flows are carried out. Much attention is given to the comparison between the present numerical results and the existing experimental data. The comparison was based on the surface distributions of the isentropic velocity, the friction velocity, the flow acceleration parameter, the displacement thickness, the shape-factor, and the momentum thickness Reynolds number. Velocity profiles upstream and downstream of the transition onset were compared also. The numerical results obtained show an influence of the transition on the secondary flow pattern. In the case of the transitional flow, when compared with the fully turbulence flow case, the endwall boundary layer cross-flow starts upstream, and it is more intensive, but less massive due to a thinner boundary layer in the laminar flow region.
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10

Moore, H., and D. G. Gregory-Smith. "Transition Effects on Secondary Flows in a Turbine Cascade." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-100.

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The regions of laminar and turbulent flow have been investigated in a linear cascade of a high tuming HP rotor blades. Measurements of intermittency close to the blade and end wall surfaces have shown substantial areas of laminar and transitional flow. The implications for turbulence modelling are important, and Navier-Stokes computations have been performed to investigate how well transition can be modelled in such a flow. Using the intermittency data to specify transitional areas, the mixing length model of turbulence produces excellent results, although there is some sensitivity to the assumed freestream length scale. High Reynolds k-ε model results show too much turbulence and loss using the measured high inlet length scale, but the results are improved with the Kato-Launder modification. A low Reynolds number model does not seem to predict the transition effects, although more work is required with this model.
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Reports on the topic "Transition de Stoner"

1

Reed, Helen L. Navier-Stokes Simulation of Boundary-Layer Transition. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada226351.

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2

Wilson, Rachel. Energy Stores and Life-History Transitions in Red-Sided Garter Snakes (Thamnophis sirtalis parietalis). Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.7381.

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