نتایج جستجو برای: phase change model
تعداد نتایج: 3051950 فیلتر نتایج به سال:
OBJECTIVE A comparative trial of 2 forms (interpretive and supportive) of short-term, time-limited individual (STI) therapy provided data that were used to test the propositions of the Howard and others phase model of psychotherapy change. METHOD Patients completed the Integra Outpatient Tracking Assessment Form on 5 occasions during the 20-session treatments. The measure assesses 3 dimension...
We propose a model that describes phase transition including metastable states present in the van der Waals Equation of State. From a convex optimization problem on the Helmoltz free energy of a mixture, we deduce a dynamical system that is able to depict the mass transfer between two phases, for which equilibrium states are either metastable states, stable states or a coexistent state. The dyn...
The enthalpy-porosity technique is commonly used for modeling phase change problems with natural convection. In most applications however, this technique is restricted to equal thermophysical properties of solid and liquid phases. In this paper, an enhanced formulation based on the enthalpy-porosity method is proposed where the different thermophysical properties between the two phases can be e...
introduction in spite of its short time period compared to the earth evolution history and formation, quaternary has had a significant effect on the final formation of the land form and vital resources. it is the final analysis of these levels and fully dependent sources to the earth genetic diseases and, above all, significant climate changes that have happened during this period; gavkhouni ba...
phase equilibria of the ternary system water + phosphoric acid + 1-nonanol at different temperatures
the purpose of this reaserch is to measure the phase equilibrium data of the ternary system (water + phosphoric acid + 1-nonanol) at different temperatures. experimental solubility curves and tie-line points for the system were obtained at t = 298.2, 308.2 and 318.2 k and ambient pressure. the binodal curve data were detected by the cloud point method. the mass fractions of each layer were achi...
A new mass-conservative phase change model has been developed for the nucleate boiling simulation. The conservative CIP scheme is used for surface tracking in order to satisfy the mass conservation exactly. As the phase change model, a sharp-interface model is developed, in which the phase change rate can be computed from the heat flux to the interface in a straightforward manner. The developed...
Chalcogenide based Phase change memory is one type of non-volatile memory that is most likely will replace the currently wide spread flash memory. Current research on Phase Change Memory targets the integration feasibility, as well as the reliability of such memory technology into the currently used CMOS process. Such studies identified special failure modes, known as disturbs, as well as other...
a methodology is presented for the stochastic generation of daily rainfall which accounts for changes to the climatic inputs. the focus of the study is an example catchment in iran. the methodology addresses the inability of gcms to provide suitable future scenarios for the time and space scales required for a water resource impact assessment for a small catchment. one stochastic model for rain...
The present investigation is to study the surface waves propagation with imperfect boundary between an isotropic elastic layer of finite thickness and a homogenous isotropic thermodiffusive elastic half- space with rotation in the context of Green-Lindsay (G-L model) theory. The secular equation for surface waves in compact form is derived after developing the mathematical model. The phase velo...
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