Results 241 to 250 of about 147,634 (282)

van der Waals gas bubble as a dynamical system

Physical Review A, 1988
A van der Waals fluid contained in a bubble under constant surface tension and temperature is formulated as a dynamical system. The temperature and surface tension determine the nature of the equilibrium solutions. The bifurcation set is a cusp where the cusp point is a shifted critical point, thus modifying the van der Waals critical point.
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Anomalous Transport Properties of a van der Waals Gas

The Journal of Chemical Physics, 1968
The contribution of the long-range potential to the transport coefficients of a van der Waals gas in the critical region are calculated using the time-correlation-function method. The microscopic currents are expanded in terms of wave-vector-dependent density fluctuations (found previously by van Kampen) whose time dependence is assumed to be described
Raymond D. Mountain, Robert Zwanzig
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Nonclassical behavior of the van der Waals gas

Journal of Statistical Physics, 1973
The partition function of the van der Waals gas is represented by a functional integral which is evaluated by summing the value of the integrand over its absolute and all of its secondary maxima. This leads to a one-to-one correspondence with the Ising model with nearest-neighbor interactions only.
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Van der Waals-Gas

2010
Das van der Waals-Gas wird als ein Modell fur den Phasenubergang gasformig– flussig vorgestellt und untersucht. Van der Waals hat dieses Modell 1873 in seiner Doktorarbeit eingefuhrt. Die thermische Zustandsgleichung wird durch die so genannte Maxwellkonstruktion erganzt. Dann erklart das van der Waals-Modell die Existenz einer Dampfdruckkurve P d (T ),
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The fugacity of a van der Waals gas

Journal of Chemical Education, 1988
The cubic nature of the vdW equation can be overcome as an impediment to exploring the remarkable properties of this equation.
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VAN DER WAALS EQUATION OF STATE REVISED: GAS MOLECULAR VOLUME CORRECTION

Modern Physics Letters B, 2011
A simple modification has been introduced to the volume correction term in the original van der Waals equation of state based on the intermolecular attractions for real gases, and the new equation of state has been established. While the proposed equation is simpler than other modified equation of state, it produces the best agreement with experiment ...
Dai, Wei, Hu, Shi-De
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Gas molecule sensing of van der Waals tunnel field effect transistors

Nanoscale, 2017
Utilizing van der Waals heterostructure gas sensors, we measure the rectification behavior of the sensitivity signal and devise a fingerprint map of the sensitivity variation in a mixture condition of two different gas molecules.
Hong Kyw Choi, Jaesung Park, Nojoon Myoung, Ho-Jong Kim, Jin Sik Choi, Young Kyu Choi, Chi-Young Hwang, Jin Tae Kim, Serin Park, Yoonsik Yi, Soo Kyung Chang, Hee Chul Park, Chanyong Hwang, Choon-Gi Choi, Young-Jun Yu   +14 more
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Exact Roe Linearization for van der Waals’ Gas

2001
An extension of Roe’s method to the van der Waals gas is presented. The introduction of a convenient supplementary equation in the Roe linearization problem for the intermediate state allows to evaluate the velocity and total specific enthalpy separately from the determination of the density that is needed to compute the Roe matrix when thermodynamic ...
A. Guardone, L. Quartapelle
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Van der Waals Interactions in Density-Functional Theory: Rare-Gas Diatomics

Journal of Chemical Theory and Computation, 2009
The application of conventional GGA and meta-GGA density functionals to van der Waals interactions is fraught with difficulties. Conventional functionals do not contain the physics of the dispersion interaction. To make matters worse, the exchange part alone can yield anything from severe overbinding to severe over-repulsion depending on the choice of ...
Felix O, Kannemann, Axel D, Becke
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Gas–gas equilibria—From Van der Waals to Ulrich Franck

The Journal of Supercritical Fluids, 2006
Abstract The experimental work of Ulrich Franck and his collaborators on phase separation in binary aqueous mixtures of gases at high pressures and temperatures is summarized and placed against the background of the school of Van der Waals, Van Laar and Kamerlingh Onnes in The Netherlands, who performed the first theoretical and experimental studies ...
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