Исследование коэффициентов сдвиговой и объемной вязкости многоатомных жидкостей в зависимости от параметров состояния

• Дата: 2018
• Автори: Odinaev, S., Abdurasulov, A.
• Формат: Стаття
• Мова: English; Ukrainian
• Опубліковано: Publishing house "Academperiodika" 2018
• Теми: частотная дисперсия; трансляционная и структурная релаксация; коэффициенты сдвиговой и объёмной вязкости; потенциал взаимодействия; радиальная функция распределения; коэффициент трения жидкости; frequency dispersion; translational and structural relaxation; shear and volume viscosity coefficients; interaction potential; radial distribution function; liquid friction coefficient
• Онлайн доступ: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018356
• Назва журналу: Ukrainian Journal of Physics

The expressions for the shear, nS (!), and volume, nV (!), viscosity coefficients in multiatomic liquids have been obtained by solving the kinetic equations for one- and two-particle distribution functions, and their dependences on the thermodynamic state parameters have been analyzed. Numerical calculations of nS (w) and nV (w) are carried out for liquid N2, O2, CO, CO2, and CH4 in wide temperature, T, and density, p, intervals, at a fixed frequency w, and for specific choices of the intermolecular interaction potential and the radial distribution function. The validity of the law of corresponding states for viscous properties of multiatomic liquids with respect to the reduced p* and T* values is tested. The results of theoretical calculations of the isofrequency viscosity coefficients for the examined liquids are found to be in satisfactory agreement with available experimental data.