Ojovan Michael I, Louzguine-Luzgin Dmitri V
Department of Materials, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
Department of Materials Science and Engineering, The University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK.
Materials (Basel). 2024 Apr 16;17(8):1822. doi: 10.3390/ma17081822.
The Trachenko-Brazhkin equation of the minimal possible viscosity is analysed, emphasising its validity by the account of multibody interactions between flowing species through some effective masses replacing their true (bare) masses. Pressure affects the effective masses, decreasing them and shifting the minimal viscosity and the temperature at which it is attained to higher values. The analysis shows that effective masses in the Trachenko-Brazhkin equation are typically lighter compared bare masses; e.g., for tin (Sn) the effective mass is m = 0.21m, whereas for supercritical argon (Ar), it changes from m = 0.165m to m = 0.129m at the pressures of 20 and 100 MPa, respectively.
对最小可能粘度的特拉琴科 - 布拉日金方程进行了分析，通过用一些有效质量取代流动物质的真实（裸）质量来考虑流动物质之间的多体相互作用，从而强调了该方程的有效性。压力会影响有效质量，使其减小，并将最小粘度及其达到时的温度移至更高值。分析表明，与裸质量相比，特拉琴科 - 布拉日金方程中的有效质量通常更轻；例如，对于锡（Sn），有效质量为m = 0.21m，而对于超临界氩（Ar），在20MPa和100MPa的压力下，有效质量分别从m = 0.165m变为m = 0.129m。
