Relevant bibliographies by topics / Thermodynamical model

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Academic literature on the topic 'Thermodynamical model'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Thermodynamical model"

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Haldar, Sourav, Pritikana Bhandari, and Subenoy Chakraborty. "A thermodynamical analysis of the inhomogeneous FLRW type model: Redefined Bekenstein–Hawking system." International Journal of Geometric Methods in Modern Physics 14, no. 11 (October 23, 2017): 1750159. http://dx.doi.org/10.1142/s0219887817501596.

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A detailed thermodynamical study has been presented for the inhomogeneous FLRW-type model of the Universe bounded by a horizon with three possible modifications of Bekenstein–Hawking formulation of thermodynamical parameters namely entropy and temperature. For the first choice of the thermodynamical system validity of both the first law of thermodynamics (FLT) and the generalized second law of thermodynamics (GSLT) are examined. Also, the integrability conditions for the exact one-forms in both the thermodynamical laws are analyzed and it is found that they are consistent with each other. On the other hand, for the other two choices of the thermodynamical system to hold the first law of thermodynamics, one must restrict the parameters (in the definition of the thermodynamical variables) in some specific integral form.
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Mamon, Abdulla Al, Pritikana Bhandari, and Subenoy Chakraborty. "Study of thermal stability for different dark energy models." International Journal of Geometric Methods in Modern Physics 16, no. 11 (November 2019): 1950171. http://dx.doi.org/10.1142/s0219887819501718.

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In this work, we have made an attempt to investigate the dark energy possibility from the thermodynamical point of view. For this purpose, we have studied thermodynamic stability of three popular dark energy models in the framework of an expanding, homogeneous, isotropic and spatially flat FRW Universe filled with dark energy and cold dark matter. The models considered in this work are Chevallier–Polarski–Linder (CPL) model, Generalized Chaplygin Gas (GCG) model and Modified Chaplygin Gas (MCG) model. By considering the cosmic components (dark energy and cold dark matter) as perfect fluid, we have examined the constraints imposed on the total equation of state parameter ([Formula: see text]) of the dark fluid by thermodynamics and found that the phantom nature ([Formula: see text]) is not thermodynamically stable. Our investigation indicates that the dark fluid models (CPL, GCG and MCG) are thermodynamically stable under some restrictions of the parameters of each model.
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Simji, P. "Statistical mechanics of cold deconfined quark matter using quasiparticle model." International Journal of Modern Physics A 35, no. 13 (May 10, 2020): 2050064. http://dx.doi.org/10.1142/s0217751x20500645.

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We discuss the statistical mechanics and thermodynamics of quark matter at zero temperature and finite chemical potential using a thermodynamically consistent framework of quasiparticle model for QGP without the need of any reformulation of statistical mechanics or thermodynamical consistency relation. Using that equation of state, we solve the Tolman–Oppenheimer–Volkoff equation to obtain the mass-radius relation of dense quark star.
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Honarvaryan, M., A. Sheykhi, and H. Moradpour. "Thermodynamical description of the ghost dark energy model." International Journal of Modern Physics D 24, no. 07 (May 27, 2015): 1550048. http://dx.doi.org/10.1142/s0218271815500480.

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In this paper, we point out thermodynamical description of ghost dark energy (GDE) and its generalization to the early universe. Thereinafter, we find expressions for the entropy changes of these dark energy (DE) candidates. In addition, considering thermal fluctuations, thermodynamics of the DE component interacting with a dark matter (DM) sector is addressed. We will also find the effects of considering the coincidence problem on the mutual interaction between the dark sectors, and thus the equation of state parameter of DE. Finally, we derive a relation between the mutual interaction of the dark components of the universe, accelerated with the either GDE or its generalization, and the thermodynamic fluctuations.
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Chetry, Binod, Jibitesh Dutta, and Wompherdeiki Khyllep. "Thermodynamics of scalar field models with kinetic corrections." International Journal of Modern Physics D 28, no. 15 (November 2019): 1950163. http://dx.doi.org/10.1142/s0218271819501633.

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In this work, we compare the thermodynamical viability of two types of noncanonical scalar field models with kinetic corrections: the square kinetic and square root kinetic corrections. In modern cosmology, the generalized second law of thermodynamics (GSLT) plays an important role in deciding thermodynamical compliance of a model as one cannot consider a model to be viable if it fails to respect GSLT. Hence, for comparing thermodynamical viability, we examine the validity of GSLT for these two models. For this purpose, by employing the Unified first law (UFL), we calculate the total entropy of these two models in apparent and event horizons. The validity of GSLT is then examined from the autonomous systems as the original expressions of total entropy are very complicated. Although, at the background level, both models give interesting cosmological dynamics, however, thermodynamically we found that the square kinetic correction is more realistic as compared to the square root kinetic correction. More precisely, the GSLT holds for the square kinetic correction throughout the evolutionary history except only during the radiation epoch where the scalar field may not represent a true description of the matter content. On the other hand, the square root kinetic model fails to satisfy the GSLT in major cosmological eras.
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Doazan, V. "The Spheroidal/Ellipsoidal, Variable Mass-Loss, Decelerated Be Star Model (Review Paper)." International Astronomical Union Colloquium 92 (August 1987): 384–410. http://dx.doi.org/10.1017/s0252921100116501.

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The proposed model is empirical; it is based on analysis of the available data on Be stars obtained in all the observable spectral regions, and it is required to be thermodynamically self-consistent. Rather than trying to answer the question: “What is the origin of the Be-phenomenon?” We ask: First. “What phenomena characterize empirically Be stars?” Second, “What thermodynamic characteristics are implied by the existence of such phenomena?” Third. “What inferences may be made an the atmospheric structure of a Be star from these empirical and thermodynamical characteristics?” The observed phenomena, their thermodynamical implications and the resulting model have each two aspects. On the one hand, the observational evidence for a nonradiatively heated, expanding chromosphere-corona implies the existence of both a nonradiative energy flux and a mass outflow from the photosphere. This first aspect is common to both Be and normal B stars, at least for the earliest subtypes.
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Panigrahi, D. "Thermodynamical behavior of the variable Chaplygin gas." International Journal of Modern Physics D 24, no. 05 (March 18, 2015): 1550030. http://dx.doi.org/10.1142/s0218271815500303.

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The thermodynamical behavior of the variable Chaplygin gas (VCG) model is studied, using an equation-of-state (EoS) like [Formula: see text], where [Formula: see text]. Here B0 is a positive universal constant, n is also a constant and V is the volume of the fluid. From the consideration of thermodynamic stability, it is seen that only if the values of n are allowed to be negative, then [Formula: see text] throughout the evolution. Again thermal capacity at constant volume cV shows positive expression. Using the best fit value of n = -3.4 as previously found by Guo and Zhang (Phys. Lett. B. 645 (2007) 326) gives that the fluid is thermodynamically stable throughout the evolution. The effective EoS for the special case of n = 0 goes to Λ Cold Dark Matter (ΛCDM) model. Again for n < 0, it favors phantom-like cosmology which is in agreement with the current SNe Ia constraints like VCG model. The deceleration parameter is also studied in the context of thermodynamics and the analysis shows that the flip occurs for the value of n < 4. Finally, the thermal EoS is discussed which is an explicit function of temperature only. It is also observed that the third law of thermodynamics is satisfied in this model. As expected, the volume increases as temperature falls during adiabatic expansions. In this case, for T → 0, the thermal EoS reduces to [Formula: see text], which is identical with the EoS for the case of large volume.
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Andrade, F. X. C., J. M. A. César de Sá, and F. M. Andrade Pires. "A Ductile Damage Nonlocal Model of Integral-type at Finite Strains: Formulation and Numerical Issues." International Journal of Damage Mechanics 20, no. 4 (January 10, 2011): 515–57. http://dx.doi.org/10.1177/1056789510386850.

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This contribution is devoted to the formulation and numerical implementation of a ductile damage constitutive model enriched with a thermodynamically consistent nonlocal theory of integral type. In order to describe ductile deformation, the model takes finite strains into account. To model elasticity, a Hencky-like hyperelastic free energy potential coupled with nonlocal damage is adopted. The thermodynamic consistency of the model is ensured by applying the first and second thermodynamical principles in the global form and the dissipation inequality can be re-written in a local form by incorporating a nonlocal residual that accounts for energy exchanges between material points of the nonlocal medium. The thermodynamically consistent nonlocal model is compared with its associated classical formulation (in which nonlocality is merely incorporated by averaging the damage variable without resorting to thermodynamic potentials) where the thermodynamical admissibility of the classical formulation is demonstrated. Within the computational scheme, the nonlocal constitutive initial boundary value problem is discretized over pseudo-time where it is shown that well established numerical integration strategies can be straightforwardly extended to the nonlocal integral formulation. A modified Newton-Raphson solution strategy is adopted to solve the nonlinear complementarity problem and its numerical implementation, regarding the proposed nonlocal constitutive model, is presented in detail. The results of two-dimensional finite element analyses show that the model is able to eliminate the pathological mesh dependence inherently present under the softening regime if the local theory is considered.
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DOLFIN, M., M. FRANCAVIGLIA, S. PRESTON, and L. RESTUCCIA. "MATERIAL ELEMENT MODEL AND THE GEOMETRY OF THE ENTROPY FORM." International Journal of Geometric Methods in Modern Physics 07, no. 06 (September 2010): 1021–42. http://dx.doi.org/10.1142/s0219887810004695.

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In this work we analyze and compare the model of the material (elastic) element and the entropy form developed by Coleman and Owen with that one obtained by localizing the balance equations of the continuum thermodynamics. This comparison allows one to determine the relation between the entropy function S of Coleman–Owen and that one imported from the continuum thermodynamics. We introduce the Extended Thermodynamical Phase Space (ETPS) [Formula: see text] and realize the energy and entropy balance expressions as 1-forms in this space. This allows us to realizes I and II laws of thermodynamics as conditions on these forms. We study the integrability (closure) conditions of the entropy form for the model of thermoelastic element and for the deformable ferroelectric crystal element. In both cases closure conditions are used to rewrite the dynamical system of the model in term of the entropy form potential and to determine the constitutive relations among the dynamical variables of the model. In a related study (to be published) these results will be used for the formulation of the dynamical model of a material element in the contact thermodynamical phase space of Caratheodory and Hermann similar to that of homogeneous thermodynamics.
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Hurisse, Olivier, and Lucie Quibel. "A homogeneous model for compressible three-phase flows involving heat and mass transfer." ESAIM: Proceedings and Surveys 66 (2019): 84–108. http://dx.doi.org/10.1051/proc/201966005.

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A homogeneous model is proposed in order to deal with the simulation of fast transient three-phase ows involving heat and mass transfer. The model accounts for the full thermodynamical disequilibrium between the three phases in terms of pressure, temperature and Gibbs enthalpy. The heat and mass transfer between the phases is modeled in agreement with the second law of thermodynamics, which ensures a stable return to the thermodynamical equilibrium. The set of partial differential equations associated with this model is based on the Euler set of equations supplemented by a complex pressure law, and by six scalar-equations that allow to account for the thermodynamical disequilibrium. It therefore inherits a simple wave structure and possesses important mathematical properties such as: hyperbolicity, unique shock definition through Rankine-Hugoniot relations, positivity of the mixture fractions. Hence the computation of approximated solutions is possible using classical algorithms, which is illustrated by an example of simulation of a steam-explosion.
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Dissertations / Theses on the topic "Thermodynamical model"

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Steuer, Haiko. "Thermodynamical properties of a model liquid crystal." [S.l.] : [s.n.], 2004. http://edocs.tu-berlin.de/diss/2004/steuer_haiko.htm.

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Pracný, Vladislav. "Neural network based shock absorber model with a thermodynamical coupling : experiment, modeling and vehicle simulation /." Aachen : Shaker, 2009. http://d-nb.info/994209967/04.

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Ramos, Luís Roberto. "Propriedades termodinâmicas do Modelo de Falicov-Kimball de duas impurezas sem spin." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-03062014-103216/.

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Neste trabalho estudamos o modelo de Falicov-Kimball, que descreve duas impurezas sem spin, localizadas e hibridizadas com elétrons de condução de um metal hospedeiro, o que faz com que a valência flutuante seja algo intrínseco do modelo. Os estados de condução são, também, espalhados eletrostaticamente quando uma carga estiver presente nos níveis locais das impurezas. O estudo foi realizado através do cálculo de propriedades termo dinâmicas do modelo, mais precisamente, da análise do calor específico e da suscetibilidade de carga em função da temperatura e para vários parâmetros diferentes do modelo. Para a obtenção do espectro de energias do Hamiltoniano que descreve o modelo, do qual as propriedades termodinâmicas são obtidas, utilizamos o Grupo de Renormalização Numérico com dois parâmetros de discretização. Em nossos estudos, mostramos alguns resultados que vão além da usual aproximação que projeta todos os momentos no nível de Fermi. Começamos nosso estudo da termodinâmica do modelo analisando regiões do espaço de parâmetros onde o Hamiltoniano toma-se mais simples (regiões onde não há hibridização ou espalhamento eletrostático) e, então, interpretações mais simples dos dados são possíveis. Verificamos, por exemplo, que quando a hibridização é diferente de zero o sistema se comporta como líquido de Fermi para temperaturas indo à zero. Para algumas escolhas de parâmetros o sistema tem o comportamento de férmions pesados. Outro ponto a se destacar é que a razão de Wilson, definida aqui como a divisão da suscetibilidade de carga pelo calor específico, tem o valor universal R = 1, quando a hibridização está presente.
In this work, we study the Falicov-Kimball model with two localized spinless impurities hybridized with conduction electrons of a host metal, therefore, valence fluctuation is intrinsic to the model. The conduction states are also electrostatically scattered whenever a charge is present em the local levels of the impurities. The study was realized computing thermodynamics properties of the model, more specifically, we analyze the temperature dependent specific heat end charge susceptibility for many different parameters of the model. The Numerical Renormalization Group with two discretization parameters is used to obtain the spectrum of the model, from what the thermodynamics is obtained. We discuss the importance of going beyond the usual approximation that projects all moment at the Fermi Level. We begun our study of the thermodynamical properties analyzing values of the parameters space, where the model becomes quadratic (that is, where hybridization or Coulomb scattering are absent), and thus simple interpretations of the data are possible. We verified, for example, that for non-zero hybridization, the system shows Fermi liquid behavior at low temperature. The Wilson ratio, defined here with the charge susceptibility instead of magnetic one, has the universal value R = 1, whenever the hybridization is present. For some choices of the model parameters the model behaviors like heavy fermion.
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Pracný, Vladislav [Verfasser]. "Neural network-based shock absorber model with a thermodynamical coupling : Experiment, modeling and vehicle simulation / Vladislav Pracny." Aachen : Shaker, 2009. http://d-nb.info/1161302549/34.

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Lima, Washington Luiz Carvalho. "Assimetria partícula-buraco no modelo de Kondo de duas impurezas." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-07012009-093355/.

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Este trabalho tem como objetivo estudar as propriedades termodinâmicas do Hamiltoniano Kondo de duas impurezas. Desenvolvemos uma extensão da técnica do grupo de renormalização numérico (GRN) que permite diagonalizar o modelo Kondo de duas impurezas convencional preservando a sua assimetria partícula-buraco. Essa assimetria elimina o ponto crítico, com propriedades de líquido não de Fermi, encontrado dez anos atrás em trabalhos que estudaram o modelo simétrico usando o GRN ou a invariância conforme. Nossos resultados para a susceptibilidade, o calor específico e a defasagem da banda de condução em T = 0 mostram uma dependência contínua com a razão I/kbTk, onde I é a interação RKKY e Tk é a temperatura de Kondo. Esses resultados contrastam com os do Hamiltoniano simétrico que apresenta uma divergência no calor específico e uma descontinuidade na defasagem para o ponto crítico I/kbTk ~ 2.2. Calculamos, também, a dependência térmica da susceptibilidade magnética das impurezas. Nossas curvas são qualitativamente equivalente às encontradas num cálculo recente do GRN no modelo simétrico e confirmam os resultados qualitativos, obtidos no início dos anos 80, baseados na técnica de \"scaling\" perturbativos: (i) Para | I | << kbTk a susceptibilidade magnética por impureza é idêntica à de uma impureza isolada. (ii) Para I >> kbTk (interação RKKY antiferromagnética) as impurezas formam um estado fundamental singleto desacoplado da banda de condução. (iii) Para -I >> kbTk (acoplamento RKKY ferromagnético), com o decréscimo da temperatura, as impurezas se acoplam inicialmente num estado tripleto, cujo momento efetivo é, então, compensado por um efeito Kondo de dois estágios. Para confirmar essa interpretação dos resultados numéricos, apresentamos expressões fenomenológicas que ajustam muita bem a susceptibilidade calculada para os regimentos quais as energias características do sistema dividem o eixo de temperatura.
This thesis studies the thermodynamical properties of the two-impurity Kondo Hamiltonian. Our generalized numerical renormalization-group approach maintains the particle-hole asymmetry found in the conventional model, which asymmetry washes out the critical point with non-Fermi liquid properties discovered ten years ago in numerical and analytical studies of the symmetric model. Our computation of the low-temperature susceptibility, linear coefficient of the specific heat, and ground-state phase shifts shows smooth dependencies on the ratio I/kbTk where I is the RKKY interaction and Tk the Kondo temperature. This contrasts with the symmetric Hamiltonian, which yields a specific-heat singularity and a sharp phase-shift discontinuity at the critical ratio I/kbTk ~ 2.2. We have also computed the temperature dependence of the impurity magnetic susceptibility. Our curves show the qualitative features encountered in a recent numerical renormalization-group study of the symmetric model and confirm the predictions of a scaling analysis carried out in the early 80\'s: (i) For | I | << kbTk the per-impurity susceptibility mimics that of an isolated impurity. (ii) For I >> kbTk (antiferromagnetic RKKY interaction), the impurities tend to lock into a ground-state singlet decoupled from the conduction electrons. (iii) For -I >> kbTk (ferromagnetic RK KY coupling), as the temperature decreases, the impurities first lock into a triplet, whose effective moment is then screened in a two-stage Kondo effect. To further confirm this interpretation of the numerical results, we present phenomenological expressions that fit well the calculated susceptibilities for each regime into which the characteristic energy scales divide the temperature axis.
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Belkhiri, Madeny. "Plasma out of thermodynamical equilibrium : influence of the plasma environment on atomic structure and collisional cross sections." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112268/document.

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Dans les plasmas chauds denses, la distribution spatiale des électrons libres et des ions peut affecter fortement la structure atomique. Pour tenir compte de ces effets, nous avons implémenter un potentiel plasma fond´ sur le modèle d’un gaz d’électron uniforme et sur une approche de type Thomas-Fermi dans le Flexible Atomic Code (FAC). Ce code a été utilisé, pour obtenir les énergies, les fonctions d’onde, et les taux radiative modifiés par l’environnement plasma. Dans des ions hydrogénoides, les résultats numériques ont été comparés avec succès à un calcul analytique basé sur la théorie des perturbations du premier ordre. Dans le cas des ions multi-électronique, on observe un décalage des niveaux, en accord avec d’autre calcul récent. Diverses méthodes pour les calculs de section efficace de collision sont examinées. L’influence de la densité du plasma sur ces sections est analysée en détail. Certaines expressions analytiques sont propos´es pour les ions hydrogénoides comme dans la limite où l’approximation de Born ou Lotz s’applique et sont comparés aux résultats numériques du code de FAC. Enfin, à partir de ce travail, nous étudions l’influence de l’environnement de plasma sur notre modèle collisionel-radiatif nommé -Foch-. En raison de cet environnement, la charge moyenne du plasma augmente, ceci est principalement due a l’abaissement du continuum. Nous observons également, le décalage des raies sur les spectres d’émission lié-lié. Un bon accord est trouvé entre notre travail et les données expérimentales sur un plasma de titane
In hot dense plasmas, the free-electron and ion spatial distribution may strongly affect the atomic structure. To account for such effects we have implemented a potential correction based on the uniform electron gas model and on a Thomas-Fermi Approach in the Flexible Atomic Code (FAC). This code has been applied to obtain energies, wave-functions and radiative rates modified by the plasma environment. In hydrogen-like ions, these numerical results have been successfully compared to an analytical calculation based on first-order perturbation theory. In the case of multi-electron ions, we observe level crossings in agreement with another recent model calculation. Various methods for the collision cross-section calculations are reviewed. The influence of plasma environment on these cross-sections is analyzed in detail. Some analytical expressions are proposed for hydrogen-like ions in the limit where Born or Lotz approximations apply and are compared to the numerical results from the FAC code. Finally, from this work, we study the influence of the plasma environment on our collisional-radiative model so-called -Foch-. Because of this environment, the mean charge state of the ions increases. The line shift is observed on the bound-bound emission spectra. A good agreement is found between our work and experimental data on a Titanium plasma
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Padilha, Igor Tavares. "Estudo das propriedades termodinâmicas no modelo de Ising aleatoriamente decorado com interações competitivas." Universidade Federal do Amazonas, 2006. http://tede.ufam.edu.br/handle/tede/3464.

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Made available in DSpace on 2015-04-22T22:07:27Z (GMT). No. of bitstreams: 1 IGOR_PADILHA.pdf: 1457616 bytes, checksum: 9e6a1d5bb5101370ae092f979e20432e (MD5) Previous issue date: 2006-08-11
Conselho Nacional de Desenvolvimento Científico e Tecnológico
In this work we will study the thermodynamics properties of the quenched decorated Ising model with competitive interactions through the effective field theory (EFT) of a one-spin cluster. The quenched decorated Ising model with competitive interactions is here used to describe the thermodynamics properties of the cooper-based oxide superconductors compounds in the insulating phase (antiferromagnetic). The model consists of planes in which the nodal spins interact antiferromagnetically (JA < 0) with their nerest-neighbors and ferromagnetically (JF > 0) with the spins that decorated the bonds, which are quenched randomly distributed over the twodimensional lattice. The planes interact antiferromagnetically with weak exchange interaction (i.e., JA´=λ JA , λ=10-5 ). By using the framework of an effective-field theory, based in the differential operator technique, we discuss beyond thermodynamics properties the antiferromagnetic-phase stability limit in the temperature-decorated bond concentration space (T-p), for λ =10-5 and various values of frustration parameter (α= JA / JF), magnetic field (H) and concentration parameter (p). For certain range of the parameter α we observe a reentrant behavior in low-temperature what it reflects in the properties behavior itself.
Neste trabalho estudaremos as propriedades termodinâmicas do modelo de Ising decorado de forma quenched (temperada) com interações competitivas através da teoria de campo efetivo (EFT) com aglomerado de um spin. O modelo de Ising decorado com interações competitivas aqui é utilizado para descrever as propriedades termodinâmicas dos compostos supercondutores baseados em planos de Cobre-Oxigênio em sua fase isolante (antiferromagnética). O modelo consiste em planos nos quais os spins nodais interagem antiferromagneticamente (JA < 0) com seus primeiros vizinhos, e ferromagneticamente (JF > 0) com os spins decoradores, os quais são distribuídos aleatoriamente de forma quenched sobre uma rede bidimensional. Os planos interagem antiferromagneticamente com uma fraca interação de troca (i.e., JA´=λ JA , λ=10-5). Utilizando o formalismo da teoria do campo efetivo, baseado na técnica do operador diferencial, discutiremos além das propriedades termodinâmicas do sistema o limite de estabilidade antiferromagnética no diagrama temperatura e concentração (T-p), para λ=10-5 e vários valores do parâmetro de frustração (α=JA / JF), campo magnético (H) e parâmetro de concentração (p). Observamos que para certos intervalos de valores do parâmetro α, o sistema apresenta um comportamento reentrante em baixas temperaturas o que se reflete nas propriedades do sistema.
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Ozkan, Ibrahim Ali. "Thermodynamic model for associating polymer solutions." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-05042004-142825/unrestricted/ozkan%5Fibrahim%5Fa%5F200408%5Fphd.pdf.

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Thesis (Ph. D.)--School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2005. Directed by Amyn S. Teja.
Dr. Thomas H. Sanders, Committee Member ; Dr. Peter J. Ludovice, Committee Member ; Dr. J. Carson Meredith, Committee Member ; Dr. William J. Koros, Committee Member ; Dr. Amyn S. Teja, Committee Chair. Includes bibliographical references.
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Kopečný, Lukáš. "McKibbenův pneumatický sval - modelování a použití v hmatovém rozhraní." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233458.

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This work describes exceptional properties of McKibben pneumatical muscle and introduces its state-of-the-art model. The mathematical model is extended especially in a field of a thermodymical behavior. A new model applies a method used for describing of a thermodynamical behavior of pneumatic cylinders until now. This method is significantly upgraded to fit a muscle behavior, particularly by considering a heat generated by a muscle internal natural friction. The model is than verified and discussed with a real system. The haptic part introduces a development and design of a haptic glove interface for the use in robotics, especially in telepresence, or in VR. The force and touch feedback is provided by Pneumatic Muscles controlled by an open loop algorithm using the introduced mathematical model. The design is light and compact.
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Green, E. "Thermodynamics of melting in model mantle compositions." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599659.

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A set of thermodynamic models suitable for mantle mineral phases, accompanied by a mafic melt model, has been calibrated in the system CaO-MgO-Al­2O3-SiO2 (CMAS) and its subsystems, over the pressure range 0.50 kbar. The models are able to reproduce phase assemblages and reactions observed by experiment. Having a fundamentally thermodynamic form, they can be interpolated reliably between the pressures, temperatures and compositions of the experiments. The models may be used with the phase equilibrium calculation software THERMOCALC, and they incorporate end-members from its internally consistent dataset for greater rigour of calibration. The mafic melt model was the focus of model development. It takes a simple regular solution formulation, in common with many of the solid solution models used in THERMOCALC. However a number of modifications had to be made in order to attain a suitably flexible model melt, since natural mafic liquids cover a very much larger compositional range than any solid solution, and have many more degrees of structural freedom. Faced with these intrinsic problems in melt modelling, the approach taken has been to calibrate the model first in small systems of one, two and three components, combining these to make larger systems. Such an approach leads to a more comprehensive model calibration, exploiting the information available in very simple systems about liquid behaviour. In the CMAS system, model fit is excellent in the pressure range 15-50 kbar. During the fitting process, a case was made for applying a pressure adjustment of -15% to one group of calibration experiments. If this is appropriate, model calculations reproduce the melting reactions well within the experimental error of ±10°C, otherwise, the reactions are calculated at temperatures up to 50°C too high. Calculated phase relations at lower pressure require further attention. Liquid and solid solution compositions are difficult to determine experimentally and probably have large unquantified errors; calculated values typically match those of the calibration experiments to within 20%. The models are able to mimic subtle features of experimental melting relations in CMAS, mostly arising from the interaction of clinopyroxene solid solution with liquid. A preliminary extension of the models was made into the system Na2O-CaO-FeO-MgO-Al2O3-Fe2O3-SiO2-Cr2O3 (NCFMASCrO), producing a reasonable fit to experimentally determined oxide trends. A set of sample calculations produced with the CMAS models is presented, demonstrating the modelling of fractional and batch melting and crystallisation. Further calculations take the form of pseudosections: maps of the phase assemblages in P-T space drawn for a single bulk composition, and contoured for phase composition. Pseudosections are powerful means of investigating thermodynamic equilibrium in a rock, since they incorporate the natural constraint of bulk composition – however they cannot produce meaningful calculations without sophisticated and reliable thermodynamic phase models. The propagation of uncertainties in fitted model parameters into pseudosection calculations is explored for the first time using Monte Carlo techniques.
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Books on the topic "Thermodynamical model"

1

Nielsen, Morten. Heavypuff: An interactive bulk model for dense gas dispersion with thermodynamical effects. Roskilde, Denmark: Riso National Laboratory, 1988.

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Kaganovich, B. M. Tekhnologii︠a︡ termodinamicheskogo modelirovanii︠a︡: Redukt︠s︡ii︠a︡ modeleĭ dvizhenii︠a︡ k modeli︠a︡m pokoi︠a︡ = Thermodynamic model engineering : Motion models reduction to rest models. Novosibirsk: Nauka, 2010.

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A, Crerar David, ed. Thermodynamics in geochemistry: The equilibrium model. New York: Oxford University Press, 1993.

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Wilmański, Krzysztof. Modele termodynamiczne ośrodków ciągłych. Poznań: Wydawn. Politechniki Poznańskiej, 1985.

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Thermodynamics of one-dimensional solvable models. Cambridge, U.K: Cambridge University Press, 1999.

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Nagnibeda, Ekaterina A. Transport properties of nonequilibrium gas flows: Models and applications. Noordwijk, The Netherlands: ESA Publications Division, 2005.

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Modeli gidrotermodinamiki dvusloĭno stratifit͡sirovannykh vodoemov. Moskva: Vychislitelʹnyĭ t͡sentr AN SSSR, 1987.

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Koliński, Andrzej. Lattice models of protein folding, dynamics, and thermodynamics. Austin, Tex: R.G. Landes, 1996.

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Discrete nonlinear models of the Boltzmann equation. Moscow: General Editorial Board for Foreign Language Publications, Nauka Publishers, 1987.

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Pál, Benedek. A modul elv: Akadémiai székfoglaló, 1988. február 16. Budapest: Akadémiai Kiadó, 1991.

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Book chapters on the topic "Thermodynamical model"

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Ruggeri, Tommaso, and Masaru Sugiyama. "Flocking and Thermodynamical Cucker-Smale Model." In Classical and Relativistic Rational Extended Thermodynamics of Gases, 591–96. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-59144-1_30.

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Maruszewski, Bogdan T. "Unconventional Thermodynamical Model of Processes in Material Structures." In Continuous Media with Microstructure 2, 151–60. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28241-1_10.

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de la Cal, Enrique, José Ramón Villar, and Javier Sedano. "A Thermodynamical Model Study for an Energy Saving Algorithm." In Lecture Notes in Computer Science, 384–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02319-4_46.

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Hoffmann, K. H., and Kunkun Liu. "A thermodynamical model of ferromagnetism and its numerical simulation." In Numerical Methods for Free Boundary Problems, 175–89. Basel: Birkhäuser Basel, 1991. http://dx.doi.org/10.1007/978-3-0348-5715-4_15.

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Kuzmenkov, E. A., and G. V. Shpatakovskaya. "Quasiclassical Shell Model and Thermodynamical Functions of Dense Plasma." In TEUBNER-TEXTE zur Physik, 105–12. Wiesbaden: Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-99736-4_13.

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Ivanova, Elena A. "On one Model of Generalized Continuum and its Thermodynamical Interpretation." In Advanced Structured Materials, 151–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19219-7_7.

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Grigorova, Veneta, and Dimitar Roussev. "A Thermodynamical Model for Analysis of Isothermal Phase Transformations under High Pressure." In Materials Science Forum, 57–62. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-438-3.57.

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Gebhard, Florian. "Thermodynamical Properties of the Exactly Solvable 1/r-Hubbard- and 1/r-tJ-Model." In NATO ASI Series, 29–38. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4899-1042-4_3.

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Stiesch, Gunnar. "Thermodynamic Models." In Modeling Engine Spray and Combustion Processes, 5–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-08790-9_2.

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Serdas, S., J. Bluhm, and J. Schröder. "Simulation of ionic Electroactive Polymers (EAPs) by considering a thermodynamical consistent model within the framework of the theory of porous media." In Insights and Innovations in Structural Engineering, Mechanics and Computation, 453–58. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315641645-75.

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Conference papers on the topic "Thermodynamical model"

1

Ghazi, Hala, François James, and Helene Mathis. "A Thermodynamical Model of Liquid-Vapor Interaction." In The 3rd World Congress on Momentum, Heat and Mass Transfer. Avestia Publishing, 2018. http://dx.doi.org/10.11159/icmfht18.115.

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Singh, Krishna Kumar. "Longitudinal structure function using Thermodynamical Bag model." In 36th International Conference on High Energy Physics. Trieste, Italy: Sissa Medialab, 2013. http://dx.doi.org/10.22323/1.174.0319.

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MONGIOVI', M. S., and D. JOU. "A THERMODYNAMICAL MODEL OF INHOMOGENEOUS SUPERFLUID TURBULENCE." In Selected Contributions from the 8th SIMAI Conference. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812709394_0040.

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Kopecny, Lukas, and Ludek Zalud. "Sensors for evaluation of thermodynamical model of pMA." In 2013 Seventh International Conference on Sensing Technology (ICST). IEEE, 2013. http://dx.doi.org/10.1109/icsenst.2013.6727691.

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Rouquette, Nicolas, Steve Chien, and Charles Robertson. "Extending model-based diagnosis for analog thermodynamical devices." In 9th Computing in Aerospace Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-4577.

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Restuccia, L., and B. T. Maruszewski. "On a Thermodynamical Model for Type-II High-Tc Superconductors: Theory and applications." In Mathematical Models and Methods for Smart Materials. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812776273_0028.

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Barbachoux, C., J. Gariel, G. Le Denmat, Jean-Michel Alimi, and André Fuözfa. "The event horizon thermodynamical (ehT-) model of the dark energy." In INVISIBLE UNIVERSE: Proceedings of the Conference. AIP, 2010. http://dx.doi.org/10.1063/1.3462707.

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Moreira, João, Jorge Morais, Brigitte Hiller, Alex H. Blin, and Alexander A. Osipov. "Quark Mass Effects in the Thermodynamical Properties of an Extended (P)NJL Model." In Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018). Journal of the Physical Society of Japan, 2019. http://dx.doi.org/10.7566/jpscp.26.024024.

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Boyd, James G., and Dimitris C. Lagoudas. "Thermodynamical constitutive model for the shape memory effect due to transformation and reorientation." In 1994 North American Conference on Smart Structures and Materials, edited by Vijay K. Varadan. SPIE, 1994. http://dx.doi.org/10.1117/12.174064.

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Doraiswamy, Srikrishna, Mrinal Iyer, Arun R. Srinivasa, and Srinivasan M. Sivakumar. "A Thermodynamically Based Model of the Superelastic Behavior of Shape Memory Alloys Using a Discrete Preisach Model." In ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2009. http://dx.doi.org/10.1115/smasis2009-1431.

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Shape Memory Alloys are increasingly being used in aeronautic [1], vibration control and seismic applications [2–6]. These applications require models that faithfully represent the full thermomechanical response of SMA wires but which at the same time are simple and fast to implement. In this paper we present a model for the superelastic behavior of Shape Memory Alloys that combines a thermodynamical framework with a Preisach model. This approach allows us to easily account for both stress and strain controlled responses as well as changes in termperature in a simple and straightforward way.
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Reports on the topic "Thermodynamical model"

1

Collins, John W., and Kenneth D. Forbus. Building Qualitative Models of Thermodynamic Processes. Fort Belvoir, VA: Defense Technical Information Center, January 2007. http://dx.doi.org/10.21236/ada465196.

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Wheeler, A. A., B. T. Murray, S. R. Coriell, R. J. Braun, and G. B. McFadden. Thermodynamically-consistent phase-field models for solidification. Gaithersburg, MD: National Institute of Standards and Technology, 1992. http://dx.doi.org/10.6028/nist.ir.4956.

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Li, Yulan, Shenyang Y. Hu, Xin Sun, and Mohammad A. Khaleel. Phase-field Model for Interstitial Loop Growth Kinetics and Thermodynamic and Kinetic Models of Irradiated Fe-Cr Alloys. Office of Scientific and Technical Information (OSTI), June 2011. http://dx.doi.org/10.2172/1049673.

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Johnson, J. N., B. E. Clements, F. L. Addessio, and T. O. Williams. A thermodynamically consistent, damage-dependent, interface debonding model for composites. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/560794.

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Vinayak N. Kabadi. HIGH TEMPERATURE HIGH PRESSURE THERMODYNAMIC MEASUREMENTS FOR COAL MODEL COMPOUNDS. Office of Scientific and Technical Information (OSTI), February 1999. http://dx.doi.org/10.2172/8977.

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Vinayak N. Kabadi. HIGH TEMPERATURE HIGH PRESSURE THERMODYNAMIC MEASUREMENTS FOR COAL MODEL COMPOUNDS. Office of Scientific and Technical Information (OSTI), February 1999. http://dx.doi.org/10.2172/8978.

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Vinayak N. Kabadi. HIGH TEMPERATURE HIGH PRESSURE THERMODYNAMIC MEASUREMENTS FOR COAL MODEL COMPOUNDS. Office of Scientific and Technical Information (OSTI), May 2000. http://dx.doi.org/10.2172/781751.

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Vinayak N. Kabadi. HIGH TEMPERATURE HIGH PRESSURE THERMODYNAMIC MEASUREMENTS FOR COAL MODEL COMPOUNDS. Office of Scientific and Technical Information (OSTI), May 2000. http://dx.doi.org/10.2172/781758.

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John C. Chen and Vinayak N. Kabadi. High Temperature High Pressure Thermodynamic Measurements for Coal Model Compounds. Office of Scientific and Technical Information (OSTI), November 1998. http://dx.doi.org/10.2172/1686.

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Johnston, Katherine. Bayesian Regression of Thermodynamic Models of Redox Active Materials. Office of Scientific and Technical Information (OSTI), September 2017. http://dx.doi.org/10.2172/1389915.

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