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Area of Science:

  • Physics
  • Materials Science
  • Fluid Dynamics

Background:

  • The Trachenko-Brazhkin equation models minimal viscosity.
  • Understanding fluid behavior under pressure is crucial.

Purpose of the Study:

  • Analyze the Trachenko-Brazhkin equation for minimal viscosity.
  • Investigate the role of effective masses and pressure on viscosity.

Main Methods:

  • Analysis of the Trachenko-Brazhkin equation.
  • Incorporation of multibody interactions through effective masses.
  • Examination of pressure effects on effective masses.

Main Results:

  • Effective masses are lighter than bare masses.
  • Pressure decreases effective masses.
  • Minimal viscosity and its attainment temperature increase with pressure.
  • Example: Tin (Sn) effective mass m = 0.21mSn.
  • Example: Supercritical Argon (Ar) effective mass shifts from m = 0.165mAr to m = 0.129mAr at 20-100 MPa.

Conclusions:

  • The Trachenko-Brazhkin equation provides a valid framework for minimal viscosity.
  • Effective masses are key to understanding pressure-dependent viscosity.
  • Multibody interactions significantly influence fluid properties.