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Journal articles on the topic 'Breakdown mechanics'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Wagh, Prajwal, Kunal Patil, Khushboo Kosrabe, and Prof Chetan Padole. "On Road Vehicle Assistance Management System." International Journal for Research in Applied Science and Engineering Technology 12, no. 4 (2024): 2713–18. http://dx.doi.org/10.22214/ijraset.2024.58901.

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Abstract: The "On Road Vehicle Breakdown Assistance" system is a pioneering solution designed to offer timely and reliable support to individuals facing mechanical issues with their vehicles, particularly in remote or unfamiliar locations. This innovative system connects registered users with a network of trustworthy, legally licensed, and approved mechanics. Unlike existing solutions with limited mechanic databases, this system provides users access to a comprehensive network of professionals. Real-time assistance and location-based mechanic searches enable users to swiftly address vehicular

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M, Nivetha, Sujtha S, and Abinaya V. "Vehicle Breakdown Assistance." International Journal on Cybernetics & Informatics 10, no. 2 (2021): 193–202. http://dx.doi.org/10.5121/ijci.2021.100221.

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This application is used to find nearby area mechanics while we suddenly stranded on the remote locations with mechanical issues of our vehicle. It is a good solution for the people who seek help in the remote locations. In this, the approved mechanics are enlisted in this application. Also they are under monitored by this system for not charging any extra service fee from the users. This can be monitored by the admin through the user feedback based on their service. The registered users can access this application. This application will help to reduce wasting user time to found a proper mecha

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Liu, H. I., X. P. Li, Yan Nian Rui, and Ying Ping He. "Intelligence Monitor and Diagnosis to High Speed Brushes Aeration Mechanics Based on Turbulent Flow Displacement Sensing Theory." Key Engineering Materials 426-427 (January 2010): 191–96. http://dx.doi.org/10.4028/www.scientific.net/kem.426-427.191.

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High Speed Brushes Aeration Mechanics are the effective aeration equipments which are widely used in the environmental protection. Because of the big span of main spindle and its high speed when it is working, the breakdown sometimes occurs. It is very importance to monitor its condition and diagnose its breakdowns. Turbulent Flow Displacement Sensors are the non-contact types which are based on eddy current effect. It has many advantages, such as good linearity, wide frequency response scope, convenience installment and so on. So it is very suitable for the main spindle’s vibration signals of

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4

P V, Sri Ram. "Drive Time Vehicle Breakdown Assistance." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 04 (2024): 1–5. http://dx.doi.org/10.55041/ijsrem31389.

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Drive Time Vehicle Breakdown Assistance is a user-centric platform dedicated to providing swift and efficient assistance to drivers experiencing vehicle issues. Through seamless chatbot integration, users can easily connect with mechanics in their vicinity, ensuring prompt resolution of breakdowns tailored to their vehicle type and location. Additionally, the platform offers a comprehensive tutorial section empowering users to tackle common issues independently, fostering a sense of self-sufficiency. Moreover, users can seamlessly search for nearby petrol stations from their location, ensuring

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5

Parker, Gordon. "The Mechanics of a “Breakdown”." American Journal of Psychiatry 164, no. 11 (2007): 1646–47. http://dx.doi.org/10.1176/appi.ajp.2007.07030522.

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6

Vicente, J. L., A. C. Razzitte, M. C. Cordero, and E. E. Mola. "Statistical mechanics of dielectric breakdown." Physica A: Statistical Mechanics and its Applications 261, no. 3-4 (1998): 309–16. http://dx.doi.org/10.1016/s0378-4371(98)00316-1.

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7

Zhou, Teng, Zaijie Liu, Yuhan Lu, Ying Wang, and Chao Yan. "Direct numerical simulation of complete transition to turbulence via first- and second-mode oblique breakdown at a high-speed boundary layer." Physics of Fluids 34, no. 7 (2022): 074101. http://dx.doi.org/10.1063/5.0094069.

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Complete transition to turbulence via first- and second-mode oblique breakdown in a high-speed boundary layer at Mach 4.5 is studied by direct numerical simulations (DNS) and linear stability theory (LST). The initial frequency and spanwise wavenumbers for both types of oblique breakdown are determined from LST. Then, DNS is employed to study the main features of the two oblique breakdown types in detail, which has rarely been discussed in previous studies. This includes the main flow structures and evolution of various modes during the linear, nonlinear, and breakdown stages, and both differe

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Sharma, Ritu, Deepak ., Divyansh Singh, Harsh Sharma, and Prashant Nishad. "Review of Challenges and Solutions in Web Based Vehicle Breakdown Assistance System." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 809–12. http://dx.doi.org/10.22214/ijraset.2022.42343.

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Abstract: At this point individuals prefer own vehicle for travelling to stay off from trouble. But just in case of any disruption during travelling, it’s very strenuous to go looking mechanic in anonymous location. Therefore, to work out this trouble we come up with an online based assistance system. During this system car and bike mechanics are ready to record yourself with their assistance information. The website will trace client’s live location automatically when he’s online. Based on client’s live location, system will develop a listing of the closest mechanics. When the client look for

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9

Keirstead, W. P., and Kent R. Wilson. "A breakdown of equilibrium statistical mechanics?" Journal of Physical Chemistry 94, no. 2 (1990): 918–23. http://dx.doi.org/10.1021/j100365a076.

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10

Kumar, Dr R. G. Suresh. "Roadside Assistance for Vehicle Breakdown." International Journal for Research in Applied Science and Engineering Technology 13, no. 5 (2025): 2692–97. https://doi.org/10.22214/ijraset.2025.70634.

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Android's dominant market share in the Smartphone industry makes it the ideal platform for reaching the largest audience of vehicle owners. The Android ecosystem provides robust development tools and resources, facilitating efficient and effective app creation. Additionally, Android's open-source nature and extensive API library enable seamless integration with various vehicle diagnostics and location services. The Existing roadside assistance system for vehicle breakdowns relies on service networks, insurance companies, and auto clubs, accessed via help lines or mobile apps. It provides servi

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11

Althaus, W., E. Krause, J. Hofhaus, and M. Weimer. "Vortex breakdown: Transition between bubble- and spiral-type breakdown." Meccanica 29, no. 4 (1994): 373–82. http://dx.doi.org/10.1007/bf00987572.

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12

SAMSONOV, BORIS F. "NEW FEATURES IN SUPERSYMMETRY BREAKDOWN IN QUANTUM MECHANICS." Modern Physics Letters A 11, no. 19 (1996): 1563–67. http://dx.doi.org/10.1142/s0217732396001557.

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The supersymmetric quantum mechanical model based on higher-derivative supercharge operators possessing unbroken supersymmetry and discrete energies below the vacuum state energy is described. As an example harmonic oscillator potential is considered.

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Muñoz-Vega, R., A. García-Quiroz, Ernesto López-Chávez, and Encarnación Salinas-Hernández. "Spontaneous symmetry breakdown in non-relativistic quantum mechanics." American Journal of Physics 80, no. 10 (2012): 891–97. http://dx.doi.org/10.1119/1.4739927.

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14

Lambert, Valère, and Nadia Lapusta. "Rupture-dependent breakdown energy in fault models with thermo-hydro-mechanical processes." Solid Earth 11, no. 6 (2020): 2283–302. http://dx.doi.org/10.5194/se-11-2283-2020.

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Abstract. Substantial insight into earthquake source processes has resulted from considering frictional ruptures analogous to cohesive-zone shear cracks from fracture mechanics. This analogy holds for slip-weakening representations of fault friction that encapsulate the resistance to rupture propagation in the form of breakdown energy, analogous to fracture energy, prescribed in advance as if it were a material property of the fault interface. Here, we use numerical models of earthquake sequences with enhanced weakening due to thermal pressurization of pore fluids to show how accounting for th

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15

Franko, Kenneth J., and Sanjiva K. Lele. "Breakdown mechanisms and heat transfer overshoot in hypersonic zero pressure gradient boundary layers." Journal of Fluid Mechanics 730 (August 1, 2013): 491–532. http://dx.doi.org/10.1017/jfm.2013.350.

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AbstractA laminar Mach 6 flat plate boundary layer is perturbed using three different types of disturbances introduced through blowing and suction. The linear and nonlinear development and eventual breakdown to turbulence are investigated using direct numerical simulation. The three different transition mechanisms compared are first mode oblique breakdown, second mode oblique breakdown and second mode fundamental resonance. The focus of the present work is to compare the nonlinear development and breakdown to turbulence for the different transition mechanisms and explain the heat transfer over

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16

Mohazzabi, Pirooz, William D. Parker, and Peter Kveton. "Breakdown of a Commonly Practiced Technique in Quantum Mechanics." Journal of Applied Mathematics and Physics 12, no. 05 (2024): 1919–29. http://dx.doi.org/10.4236/jamp.2024.125118.

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17

Mitchell, Anthony M., and Jean Délery. "Research into vortex breakdown control." Progress in Aerospace Sciences 37, no. 4 (2001): 385–418. http://dx.doi.org/10.1016/s0376-0421(01)00010-0.

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18

Rajamanickam, Kuppuraj, and Saptarshi Basu. "Insights into the dynamics of conical breakdown modes in coaxial swirling flow field." Journal of Fluid Mechanics 853 (August 22, 2018): 72–110. http://dx.doi.org/10.1017/jfm.2018.549.

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The main idea of this paper is to understand the fundamental vortex breakdown mechanisms in the coaxial swirling flow field. In particular, the interaction dynamics of the flow field is meticulously addressed with the help of high fidelity laser diagnostic tools. Time-resolved particle image velocimetry (PIV) (${\sim}1500~\text{frames}~\text{s}^{-1}$) is employed in $y{-}r$ and multiple $r{-}\unicode[STIX]{x1D703}$ planes to precisely delineate the flow dynamics. Experiments are carried out for three sets of co-annular flow Reynolds number $Re_{a}=4896$, 10 545, 17 546. Furthermore, for each $

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19

Moise, Pradeep, and Joseph Mathew. "Bubble and conical forms of vortex breakdown in swirling jets." Journal of Fluid Mechanics 873 (June 24, 2019): 322–57. http://dx.doi.org/10.1017/jfm.2019.401.

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Experimental investigations of laminar swirling jets had revealed a new form of vortex breakdown, named conical vortex breakdown, in addition to the commonly observed bubble form. The present study explores these breakdown states that develop for the Maxworthy profile (a model of swirling jets) at inflow, from streamwise-invariant initial conditions, with direct numerical simulations. For a constant Reynolds number based on jet radius and a centreline velocity of 200, various flow states were observed as the inflow profile’s swirl parameter $S$ (scaled centreline radial derivative of azimuthal

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ZHANG, TONG-YI, MING-HAO ZHAO, and CUN-FA GAO. "The strip dielectric breakdown model." International Journal of Fracture 132, no. 4 (2005): 311–27. http://dx.doi.org/10.1007/s10704-005-2054-8.

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21

Lennie, T. B., D. P. Mckenzie, D. R. Moore, and N. O. Weiss. "The breakdown of steady convection." Journal of Fluid Mechanics 188 (March 1988): 47–85. http://dx.doi.org/10.1017/s0022112088000631.

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Two-dimensional convection in a Boussinesq fluid with infinite Prandtl number, confined between rigid horizontal boundaries and stress-free lateral boundaries, has been investigated in a series of numerical experiments. In a layer heated from below steady convection becomes unstable to oscillatory modes caused by the formation of hot or cold blobs in thermal boundary layers. Convection driven by internal heating shows a transition from steady motion through periodic oscillations to a chaotic regime, owing to the formation of cold blobs which plunge downwards and eventually split the roll. The

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22

Sukhushin, Yu N., and I. G. Khaneft. "Electrical breakdown in ammonium perchlorate." Journal of Applied Mechanics and Technical Physics 31, no. 3 (1991): 351–53. http://dx.doi.org/10.1007/bf00864562.

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23

LOPEZ, J. M., Y. D. CUI, F. MARQUES, and T. T. LIM. "Quenching of vortex breakdown oscillations via harmonic modulation." Journal of Fluid Mechanics 599 (March 6, 2008): 441–64. http://dx.doi.org/10.1017/s002211200800027x.

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Vortex breakdown is a phenomenon inherent to many practical problems, such as leading-edge vortices on aircraft, atmospheric tornadoes, and flame-holders in combustion devices. The breakdown of these vortices is associated with the stagnation of the axial velocity on the vortex axis and the development of a near-axis recirculation zone. For large enough Reynolds number, the breakdown can be time-dependent. The unsteadiness can have serious consequences in some applications, such as tail-buffeting in aircraft flying at high angles of attack. There has been much interest in controlling the vorte

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24

ANDREU, MIQUEL ANGEL, ALESSANDRA CELLETTI, and CORRADO FALCOLINI. "BREAKDOWN OF LIBRATIONAL INVARIANT SURFACES." International Journal of Bifurcation and Chaos 09, no. 05 (1999): 975–82. http://dx.doi.org/10.1142/s0218127499000705.

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A numerical investigation of the stability of invariant librational tori is presented. The method has been developed for a model describing the spin-orbit coupling in Celestial Mechanics. Periodic orbits approaching the librational torus are computed by means of Newton's method. According to Greene's criterion, their stability is strictly related to the survival of invariant tori. We consider librational tori around the main spin-orbit resonances (1:1, 3:2). Their existence provides the stability of the resonances, due to the confinement properties in the three-dimensional phase space associat

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25

Sørensen, J. N., I. V. Naumov, and V. L. Okulov. "Multiple helical modes of vortex breakdown." Journal of Fluid Mechanics 683 (August 19, 2011): 430–41. http://dx.doi.org/10.1017/jfm.2011.308.

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AbstractExperimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with high aspect ratios is associated with the appearance of stable helical vortex multiplets. By using results from stability theory generalizing Kelvin’s problem on vortex polygon stability, and systematically exploring the cavity flow, we succeeded in identifying two new stable vortex breakdown states consisting of triple and quadruple helical multiplets.

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26

YOUSSEF, SAUL. "A REFORMULATION OF QUANTUM MECHANICS." Modern Physics Letters A 06, no. 03 (1991): 225–35. http://dx.doi.org/10.1142/s0217732391000191.

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We show that the phenomena explained by quantum mechanics can alternatively be explained as a breakdown of probability theory without the need for wave-particle duality or the idea that a particle does not have a unique path in space. The single-particle Lagrangian consistent with the reformulated quantum mechanics is derived and specialized to the Schrödinger and Klein-Gordon theories. The usual paradoxes of quantum mechanics are explained. A connection to gravity is proposed. Probability theory is restored in the classical limit.

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27

Yuwei, Li, Ai Chi, Liu Yu, and Gao Changlong. "The Breakdown Pressure Calculating Model for Open Hole Completion CBM Well Hydraulic Fracturing." Open Fuels & Energy Science Journal 7, no. 1 (2014): 12–19. http://dx.doi.org/10.2174/1876973x01407010012.

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The open hole completion CBM borehole wall intersects with the weak surface such as cleats and fractures. In the process of hydraulic fracturing, the fractures may origin from coal body or cleats, which makes the rupture mechanism and rupture models of the borehole wall being different from the conventional reservoirs. The previous model for calculating breakdown pressure of open hole completion borehole wall considering tension failure has poor applicability for calculating breakdown pressure. Considering the spatial relationship of the intersection of borehole wall and cleats, analyzing the

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28

Kozhevnikov, S. N., V. K. Kulik, and A. I. Tkachuk. "Dynamic synthesis of the main lines of breakdown mills." Soviet Applied Mechanics 21, no. 4 (1985): 373–80. http://dx.doi.org/10.1007/bf00886585.

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29

Tapasztó, Levente, Traian Dumitrică, Sung Jin Kim, Péter Nemes-Incze, Chanyong Hwang, and László P. Biró. "Breakdown of continuum mechanics for nanometre-wavelength rippling of graphene." Nature Physics 8, no. 10 (2012): 739–42. http://dx.doi.org/10.1038/nphys2389.

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30

Drechsler, Krista C., and Maria J. Ferrua. "Modelling the breakdown mechanics of solid foods during gastric digestion." Food Research International 88 (October 2016): 181–90. http://dx.doi.org/10.1016/j.foodres.2016.02.019.

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31

KALKHORAN, I. M., M. K. SMART, and F. Y. WANG. "Supersonic vortex breakdown during vortex/cylinder interaction." Journal of Fluid Mechanics 369 (August 25, 1998): 351–80. http://dx.doi.org/10.1017/s0022112098001566.

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The head-one interaction of a supersonic streamwise vortex with a circular cylinder reveals a vortex breakdown similar in many ways to that of incompressible vortex breakdown. In particular, the dramatic flow reorganization observed during the interaction resembles the conical vortex breakdown reported by Sarpkaya (1995) at high Reynolds number. In the present study, vortex breakdown is brought about when moderate and strong streamwise vortices encounter the bow shock in front of a circular cylinder at Mach 2.49. The main features of the vortex/cylinder interaction are the formation of a blunt

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32

Zohdi, T. I. "Dielectric Breakdown Elimination Via Particulate Additives." International Journal of Fracture 159, no. 2 (2009): 247–53. http://dx.doi.org/10.1007/s10704-009-9403-y.

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33

Myose, ROY Y., and Ron F. Blackwelder. "On the role of the outer region in the turbulent-boundary-layer bursting process." Journal of Fluid Mechanics 259 (January 25, 1994): 345–73. http://dx.doi.org/10.1017/s0022112094000170.

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The dynamics and interaction of turbulent-boundary-layer eddy structures was experimentally emulated. Counter-rotating streamwise vortices and low-speed streaks emulating turbulent-boundary-layer wall eddies were generated by a Görtler instability mechanism. Large-scale motions associated with the outer region of turbulent boundary layer were emulated with — ωzspanwise vortical eddies shed by a periodic non-sinusoidal oscillation of an airfoil. The scales of the resulting eddy structures were comparable to a moderate-Reynolds-number turbulent boundary layer. Results show that the emulated wall

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34

Chand, Sai, Emily Moylan, S. Travis Waller, and Vinayak Dixit. "Analysis of Vehicle Breakdown Frequency: A Case Study of New South Wales, Australia." Sustainability 12, no. 19 (2020): 8244. http://dx.doi.org/10.3390/su12198244.

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Traffic incidents such as crashes, vehicle breakdowns, and hazards impact traffic speeds and induce congestion. Recognizing the factors that influence the frequency of these traffic incidents is helpful in proposing countermeasures. There have been several studies on evaluating crash frequencies. However, research on other incident types is sparse. The main objective of this research is to identify critical variables that affect the number of reported vehicle breakdowns. A traffic incident dataset covering 4.5 years (January 2012 to June 2016) in the Australian state of New South Wales (NSW) w

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35

Sotzing, Gregory A., and Pritish S. Aklujkar. "Chromogenic identification of breakdown." Nature Materials 23, no. 2 (2024): 163–64. http://dx.doi.org/10.1038/s41563-023-01786-9.

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36

Tsitverblit, N., and E. Kit. "Numerical study of axisymmetric vortex breakdown in an annulus." Acta Mechanica 118, no. 1-4 (1996): 79–95. http://dx.doi.org/10.1007/bf01410509.

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37

Suhaimi, Nur Sabrina, Muhamad Faiz Md Din, Chong Yin Tan, et al. "Electrical Properties and Raman Scattering of Palm Oil Based Carbon Nanotube." Key Engineering Materials 908 (January 28, 2022): 343–47. http://dx.doi.org/10.4028/p-25v391.

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This paper studies the electrical efficiency of carbon nanotubes (CNT) with nanosized diameter inserted into palm-based oil at various concentrations (0, 0.0125, 0.025, 0.0375, 0.05, 0.125, 0.25 and 0.5 g/L). Dispersion methods, including sonication and drying process were systematically applied for producing stable CNT nanofluids. Several parameters such as electrical properties (AC breakdown voltage) and dielectric properties (dissipation factor, relative permittivity and resistivity) were measured accordingly based on IEC 60156 and IEC 60247 international standards. The test results reveal

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38

Kachanov, Yu S. "On the resonant nature of the breakdown of a laminar boundary layer." Journal of Fluid Mechanics 184 (November 1987): 43–74. http://dx.doi.org/10.1017/s0022112087002805.

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The first part of this paper (§2) briefly reviews the history of the idea of the resonant nature of laminar-boundary-layer breakdown. In the second part a new wave-resonance concept of the breakdown mechanism is proposed. The existing experimental data on the laminar boundary layer (and plane channel flow) breakdown are analysed from the viewpoint of this concept and are compared with the well-known local high-frequency secondary-instability concept. The results testify to the correctness of the proposed wave-resonant concept for the initial stages of breakdown, in particular for the K-regime

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39

Pasche, S., F. Gallaire, and F. Avellan. "Predictive control of spiral vortex breakdown." Journal of Fluid Mechanics 842 (March 6, 2018): 58–86. http://dx.doi.org/10.1017/jfm.2018.124.

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The predictive control of the self-sustained single spiral vortex breakdown mode is addressed in the three-dimensional flow geometry of Ruithet al.(2003) for a constant swirl number$S=1.095$. Based on adjoint optimization algorithms, two different control strategies have been designed. First, a quadratic objective function minimizing the radial velocity intensity, taking advantage of the physical mechanism underpinning spiral vortex breakdown. The second strategy focuses on the hydrodynamic instability properties using as objective function the growth rate of the most unstable global eigenmode

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40

Gao, Yue, and Emmanuel Detournay. "Fracture toughness interpretation from breakdown pressure." Engineering Fracture Mechanics 243 (February 2021): 107518. http://dx.doi.org/10.1016/j.engfracmech.2020.107518.

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41

Qadri, Ubaid Ali, Dhiren Mistry, and Matthew P. Juniper. "Structural sensitivity of spiral vortex breakdown." Journal of Fluid Mechanics 720 (February 27, 2013): 558–81. http://dx.doi.org/10.1017/jfm.2013.34.

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AbstractPrevious numerical simulations have shown that vortex breakdown starts with the formation of a steady axisymmetric bubble and that an unsteady spiralling mode then develops on top of this. We investigate this spiral mode with a linear global stability analysis around the steady bubble and its wake. We obtain the linear direct and adjoint global modes of the linearized Navier–Stokes equations and overlap these to obtain the structural sensitivity of the spiral mode, which identifies the wavemaker region. We also identify regions of absolute instability with a local stability analysis. A

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42

Aldushin, A. P. "Thermal breakdown in a heating filament." Journal of Applied Mechanics and Technical Physics 34, no. 3 (1993): 300–304. http://dx.doi.org/10.1007/bf00864779.

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Maslov, V. P., and I. A. Molotkov. "Superheating behavior in a breakdown reactor." Doklady Physics 53, no. 8 (2008): 454–57. http://dx.doi.org/10.1134/s1028335808080120.

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44

Rakhmatullina, R. G., A. R. Maskova, and G. U. Yarmuhametova. "Mathematical Modeling in Studying the Electrophysical Properties of Syndiotactic 1,2-Polybutadiene." Materials Science Forum 1082 (March 31, 2023): 108–13. http://dx.doi.org/10.4028/p-u24c83.

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In order to expand the possibilities of practical application of polymeric materials we studied syndiotactic 1,2-polybutadiene (1,2-SPB). The experimental procedure and the MV-002 device for determining the breakdown voltage and electrical breakdown of a polymer are described in detail. Mathematical models of the dependence of the breakdown voltage of the polymer on the frequency and magnitude of the electrical breakdown of the polymer on the thickness of the sample have been built and studied. Regression analysis was used for mathematical data processing. The reliability of the results obtain

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45

Bergholz, W., W. Mohr, W. Drewes, and H. Wendt. "Defect-related gate oxide breakdown." Materials Science and Engineering: B 4, no. 1-4 (1989): 359–66. http://dx.doi.org/10.1016/0921-5107(89)90271-7.

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46

Manasseh, Richard. "Nonlinear behaviour of contained inertia waves." Journal of Fluid Mechanics 315 (May 25, 1996): 151–73. http://dx.doi.org/10.1017/s0022112096002388.

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Rotating fluid-filled containers are systems which admit inertial oscillations, which at appropriate frequencies can be represented as inertia wave modes. When forced by a time-dependent perturbation, systems of contained inertia waves have been shown, in a number of experimental studies, to exhibit complex and varied breakdown phenomena. It is particularly hard to determine a forcing amplitude below which breakdowns do not occur but at which linear wave behaviour is still measurable. In this paper, experiments are presented where modes of higher order than the fundamental are forced. These mo

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47

Kalkhoran, Iraj M., and Michael K. Smart. "Aspects of shock wave-induced vortex breakdown." Progress in Aerospace Sciences 36, no. 1 (2000): 63–95. http://dx.doi.org/10.1016/s0376-0421(99)00011-1.

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48

Monaghan, Finn, Antonio Martinez, Fisher Craig, and Mike Jennings. "Impact of Dimensions and Doping on the Breakdown Voltage of a Trench 4H-SiC Vertical JFET." Key Engineering Materials 948 (June 6, 2023): 69–75. http://dx.doi.org/10.4028/p-e6c13m.

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In this paper we study the feasibility of the design/fabrication of a vertical trench 4H-SiC Junction Field Effect Transistor (JFET), assuming realistic constraints of the depth of the P+ implantation. The P+ doping profile is obtained using a Monte Carlo implantation simulation. The calculation used a drift-diffusion approach. The JFET aims to achieve a threshold voltage of-3V. We found that this constraint in concomitance with the proposed structure limits the breakdown voltage to approximately 200V. This is the result of a premature breakdown induced by short channel effects, namely Drain I

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49

Kurosaka, M., M. Kikuchi, K. Hirano, T. Yuge, and H. Inoue. "Interchangeability of vortex-breakdown types." Experiments in Fluids 34, no. 1 (2003): 77–86. http://dx.doi.org/10.1007/s00348-002-0535-3.

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LECLAIRE, BENJAMIN, and DENIS SIPP. "A sensitivity study of vortex breakdown onset to upstream boundary conditions." Journal of Fluid Mechanics 645 (January 29, 2010): 81–119. http://dx.doi.org/10.1017/s0022112009992436.

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Abstract:

This paper theoretically investigates the influence of the upstream boundary conditions on the bifurcation structure leading to vortex breakdown. The axisymmetric flow of an inviscid fluid in a pipe of constant cross-section and finite axial length is considered. Solutions bifurcating from the columnar solution at criticality are analysed via a weakly nonlinear expansion and computed in the fully nonlinear regime using numerical continuation, until a centreline recirculation is found at the pipe outlet. Bifurcation diagrams are determined for a parametric family of inflows describing a wide ra

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