Effective phonon theory of heat conduction in 1d nonlinear lattice chains
Effective phonon theory of heat conduction in 1d nonlinear lattice chains
... Review of Heat Conduction in 1D systems 1.3 14 Literature Review of Heat Conduction in 1D systems 1.3.1 Breakdown of Fourier’s law The starting point for the study of heat conduction in 1D lattice ... classical heat conduction of 1D nonlinear lattices A new theory of heat conduction, Effective Phonon Theory, has been developed based on the effective phonons The effective phonons are the renormalized phonons ... candidate for the cause of normal heat conduction in 1D lattice models In 1984, Casati et al 1.3 Literature Review of Heat Conduction in 1D systems 19 introduced the 1D ding-a-ling model [67] H= N...
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modeling of the conduction in a wo3 thin film as ozone sensor
... spread out between adjacent grains is increased by oxidizing vapours and decreased in the opposite case [6–8], that implies a variation of resistivity in the same way Since 1980, many authors have ... polycrystalline layer made up of grains which have a great disparity of shape and size In this work, the grains are supposed to be quasi-spherical, identical in size, and single-crystal They are jointed, ... was already described The interaction between the gas and the surface was modeled by Langmuir isotherm and the electrical resistivity was evaluated by solving the transport equations This paper...
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Báo cáo hóa học: " On the stability of the exact solutions of the dual-phase lagging model of heat conduction" docx
... equation under the relaxation time approximation [6] Conclusions By combining the methods of separation of variables and the Laplace transform, the exact solution of the DPL model of heat conduction ... doi:10.1186/1556-276X-6-327 Cite this article as: Ordonez-Miranda and Alvarado-Gil: On the stability of the exact solutions of the dual-phase lagging model of heat conduction Nanoscale Research Letters 2011 6:327 ... characteristic of the temperature predicted by Equation indicates that the DPL model, in its exact form, cannot be considered as a valid model of heat conduction Mathematical formulation and solutions The...
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Some Famous Problems of the Theory of Numbers and in particular pdf
... absolutely and triumphantly successful, and it stands with the work of Hadamard and de la Vall´e-Poussin, in the theory of primes, as one of the lande marks in the modern history of the theory of numbers ... published in Vol 19 of the Proceedings of the London Mathematical Society PRINTED IN ENGLAND AT THE OXFORD UNIVERSITY PRESS End of the Project Gutenberg EBook of Some Famous Problems of the Theory of ... connexion THE THEORY OF NUMBERS with Oxford and with the Savilian chair The connexion of Oxford with the theory of numbers is in the main a nineteenth-century connexion, and centres naturally in the...
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Parametric resonance of 4th order in a nonlinear vibrating system under the influence of frictions
... (a0 , ) + ftfo ~ - cos4^o ô a ~ s i n y v ' V ’| \ here a prime denotes partial differentiation with respect to o0 Parametric resonance o f 4th order in nonlinear vibrating system 437 The characteristic ... plitude o f stationary oscillations then becomes 5.3) D 2a% = H ị a ị ^ + í ì - ^ + ịiaì)2, /f2 = - y ^ - Parametric resonance o f 4th order in nonlinear vibrating system 440 T h e resonant curves ... T o study the stability o f stationary oscillations, the variational equations based on tlie Stationary solution will be considered By setting a = ơ0 + a, where a and ôy) we have are d = 4e...
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Báo cáo hóa học: " Heat Conduction of Air in Nano Spacing" doc
... Nanoscale Res Lett (2009) 4:850–853 This present work will focus on heat conduction of air in NS The change of heat conduction of air in NS will be measured with heat conduction instrument ... the heat conduction coefficient and the thickness of air As shown, when the thickness of air is small down to nanometer scale, the heat conduction coefficient increases with the increasing of thickness ... the heat conduction rate of air (v) These parameters, including DT, h, and A can be got by the experiment The heat conduction coefficient can be calculated if only the heat conduction rate of air...
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Circuit theory of finance and the role of incentives in financial sector reform
... illustrates the main structural, theoretical and incentive-related policy implications of circuit theory of finance Section I.2 discusses the special role of the financial system as the core of the circuit ... profitability is declining The internalization of information within the same institution may thus enhance intra -circuit and inter -circuit stability by reducing the incentive to overfinancing The ... conceptualization and recent evidence CTF clarifies the role of the financial system in the functioning of a monetary market economy of production At the start of the circuit process, the financial system...
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MÔ HìNH HOá QUá TRìNH TRAO ĐổI NHIệT ẩM TRONG MáY ấP TRứNG GIA CầM Modeling of heat and mass transfer in chicken egg incubators
... 3.4 Mô hình toán học trình trao đổi nhiệt ẩm vùng chứa trứng Từ mô hình động học (6) phơng trình nhiệt độ độ ẩm dòng khí trứng (35), (36) (38) ta xác định đợc hệ phơng trình mô tả trạng thái nhiệt ... lợng trứng: 224 (1 ) drT h fT t = hcTa Av (Ta TT ) + (1 ) drT hP + (1 ) drT hD (TT ) X t (34) 3.3 Đơn giản hoá mô hình nhiệt ẩm vùng chứa trứng Mô hình trao đổi nhiệt ẩm vùng chứa trứng ... (1988), Modeling Simultaneous Heat and Mass Transfer in Isotropic Sphere, Trans ASEA, pp 31 Husain A., Chen C.S., Clayton J T, Whitney L.F (1972), Mathematical Simulation of Mass and Heat Transfer in...
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Performance characteristic of energy selective electron (ESE) heat engine with filter heat conduction
... 40] are obtained with out considering the heat conduction of the filter due to the propagation of phonons So far, the optimum performance of the ESE heat engine with filter heat conduction via ... heat engine model with heat conduction of the energy filter via phonons, and to analyze the optimum performance of the model as well as the influence of the heat conduction of the filter The general ... intermediate operation regime with ∆E k B = 2.0 K Conclusions A model of an energy selective electron (ESE) heat engine with filter heat conduction via the propagation of phonons is proposed in...
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An experimental investigation of heat transfer and fluid flow in a rectangular duct with inclined discrete ribs
... rib arrangements on heat transfer and flow behavior in a rectangular rib roughened passage” International Journal of Heat and mass transfer; 123: 675-681, 2001 [6] Lau S.C., McMillin R.D and Han ... studies of augmented heat transfer and friction in asymmetrically heated rectangular ducts with ribs on the heated wall in transverse, inclined, V-continuous and V- discrete pattern Int Journal of Heat ... Tariq, A. , Keshav Kant and Panigrahi, P K., Heat transfer enhancement using an internally threaded tube”, Proceeding of the 4th ISHMT-ASME and 15th National Conference on Heat and Mass transfer...
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Evaluation of heat pumps usage and energy savings in residential buildings
... conventional end-uses of heating, cooling and water heating [7] The present work focuses on determining the efficacy of using heat pumps as the main source of heating in eastern North Carolina residential ... alternative heating sources during the heating season in the residential sector of Eastern North Carolina Reduction in levels of energy consumption is usually an indication of energy savings Energy ... energy intensity ratio of the heat pumps group) The energy intensity for homes with gas and homes with combination method of heating are 1.7 and 1.9 times the consumption of house with heat pumps...
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