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Thermodynamics of nonlinear, interacting irreversible processes. II

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Abstract

The scope of the thermodynamic theory of nonlinear irreversible processes is widened to include the nonlinear stability analysis of system motion. The emphasis is shifted from the analysis of instantaneous energy flows to that of the average work performed by periodic nonlinear processes. The principle of virtual work separates dissipative and conservative forces. The vanishing of the work of conservative forces determines the natural period of oscillation. Stability is then determined by the variations of the dissipative forces with amplitude of oscillation. If the work is a minimum, under certain conditions, the motion is stable. Reduction to linear analysis shows the coincidence with the impedance analysis of electrical circuit theory. The theory is applied to the analysis of temporal interactions of nonlinear irreversible processes in the particular cases of synchronization and hysteresis. Characteristic nonequilibrium phenomena of directional energy transfers, self-excitation, system passivity, wave modulation, and “beat” phenomena are observed. Possible relationships with biological processes are discussed.

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  1. B. H. Lavenda

    Present address: Nuovo Pignone, Firenze, Italia

Authors and Affiliations

  1. Department of Physical Chemistry, The Hebrew University, Jerusalem, Israel

    B. H. Lavenda

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  1. B. H. Lavenda
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Lavenda, B.H. Thermodynamics of nonlinear, interacting irreversible processes. II. Found Phys 3, 53–88 (1973). https://doi.org/10.1007/BF00708600

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  • DOI: https://doi.org/10.1007/BF00708600

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