نتایج جستجو برای: helmholtz free energy
تعداد نتایج: 1135682 فیلتر نتایج به سال:
Using mean-field and semi-classical approximation of Thomas-Fermi, within a statistical model, equation of state and critical properties of symmetric nuclear matter is studied. In this model, two body and phenomenological interaction of Myers and Swiatecki is used in phase space. By performing a functional variation of the total Helmholtz free energy of system with respect to the nucleonic di...
معادله حالت esd -elliott-suresh-donohue بر اساس تئوری اغتشاش با افزودن یک سهم در انرژی هلمهولتز سیستم برای سیالات قطبی اصلاح شده است. سهم قطبی بر اساس تقریب pade برای پتانسیل مرجع چاه مربعی ارائه شده است. عملکرد ترم قطبی بدست آمده برای سیال مجازی چاه مربعی دو قطبی، چهار قطبی و سیال واقعی خالص با مدل چاه مربعی آزموده شده است. نتایج نشان داد که ترم قطبی دارزای معنای فیزیکی بوده و در ترکیب با یک م...
محاسبه انرژی آزاد هلمهولتز و معادله حالت بلور fcc با مولکولهای با برهمکنش کره سخت-یوکاوا به روش ابنر
The Helmholtz free energy and equation of the state of an fcc crystal are calculated, where the interaction between the molecules is hard sphere-Yukawa potential. Here the perturbational density functional method is used. This method is introduced by Ebner and co-workers. In this method the density functional Taylor expansion is applied for the crystal configuration up to second order. And for...
We determined the total system elastic Helmholtz free energy, under the constraints of constant temperature and volume, for systems comprised of one or more perfectly bonded hard spherical inclusions (i.e. "hard spheres") embedded in a finite spherical elastic solid. Dirichlet boundary conditions were applied both at the surface(s) of the hard spheres, and at the outer surface of the elastic so...
Recent work has sought to extract the asymmetry energy at very low density from observables in heavyion collisions. The logic employed starts from the assumption that the fragment yields are determined by a minimization of the Helmholtz free energy. As volume is in reality unconstrained, nor can a single freeze-out volume be expected, the physical relevance of the Helmholtz free energy must be ...
We use the virial theorem to derive a closed analytic form of the Helmholtz free energy for a polydisperse system of sticky hard spheres (SHS) within the mean spherical model (MSM). To this end we calculate the free energy of the MSM for an N-component mixture of SHS via the virial route and apply to it-after imposing a Lorentz-Berthelot type rule on the interactions-the stochastic (i.e., polyd...
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