نتایج جستجو برای: polar fluids

تعداد نتایج: 88844  

2004
Lixin Sun James F. Ely

Engineering equations of state (EOS) deal with the majority of fluids of interest in process and equipment design in the chemical industries. Accuracy and universality are two desirable features the engineering EOS require, however, both of them cannot be simultaneously obtained without some degree of compromise. Therefore a simultaneous optimization algorithm is proposed to develop an accurate...

1999
N. G. Fuller R. L. Rowley

The influence of model flexibility upon simulated viscosity was investigated. NEMD simulations of viscosity were performed on seven pure fluids using three different models for each: one with rigid bonds and angles, one with flexible angles and rigid bonds, and one with flexible bonds and angles. Three nonpolar fluids (propane, n-butane and isobutane), two moderately polar fluids (propyl chlori...

2006
V. C. Weiss

The liquid-vapor interfacial tension of various simple, polar, and ionic fluids is studied in a corresponding-states analysis originally suggested by Guggenheim [1]. The results for real fluids are compared to the corresponding ones for model fluids of each of the three types. For simple and weakly polar fluids, the data is mapped onto a master curve, as already demonstrated by Guggenheim. For ...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 1981

Journal: :The Journal of Chemical Physics 2018

Journal: :The European physical journal. E, Soft matter 2012
A Baskaran M C Marchetti

We consider the hydrodynamic theory of an active fluid of self-propelled particles with nematic aligning interactions. This class of materials has polar symmetry at the microscopic level, but forms macrostates of nematic symmetry. We highlight three key features of the dynamics. First, as in polar active fluids, the control parameter for the order-disorder transition, namely the density, is dyn...

Journal: :Physical review letters 2008
Luca Giomi M Cristina Marchetti Tanniemola B Liverpool

We study the dynamical properties of active polar liquid crystalline films. Like active nematic films, active polar films undergo a dynamical transition to spontaneously flowing steady states. Spontaneous flow in polar fluids is, however, always accompanied by strong concentration inhomogeneities or "banding" not seen in nematics. In addition, a spectacular property unique to polar active films...

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