The anomalous behavior of water sound speed

Abstract

This work presents an analytic study of anomalies observed in the water sound speed. From fundamentals of thermodynamics, we show that the two-liquid model, which assumes that water is composed of two types of clusters, HDL and LDL, whose relative concentration depends on the thermal conditions of the sample, leads straightforwardly to the result that the excluded volume of water can change. From this result, we demonstrate how the parameters determining the water sound speed are modified by the thermal dependent interaction between its clusters, leading to a profile for this property that is typical of water.