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Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine
08:16

Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine

Published on: March 13, 2017

Effect of initial temperature on water aggregation at a cold surface.

Lemont B Kier1, Chao-Kun Cheng

  • 1Center for the Study of Biological Complexity, Virginia Commonwealth University Richmond, VA, USA. lbkier@vcu.edu

Chemistry & Biodiversity
|January 24, 2013
PubMed
Summary

Warm water freezes faster than cool water due to cellular automata models simulating the Mpemba effect. This study observed more fully bonded water cells forming earlier in warmer initial water simulations.

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Area of Science:

  • Physical Chemistry
  • Computational Physics

Background:

  • The Mpemba effect describes the counterintuitive phenomenon where warmer water can freeze faster than colder water under certain conditions.
  • Understanding the precise mechanisms behind the Mpemba effect remains an active area of scientific inquiry.

Purpose of the Study:

  • To model the Mpemba effect using cellular automata simulations.
  • To investigate the role of initial water temperature on ice formation dynamics.

Main Methods:

  • Development of cellular automata models for water.
  • Simulation of water models exposed to a freezing surface at two distinct initial temperatures (warm and cool).
  • Observation and quantification of fully bonded water cell (f(4)) formation over time.

Main Results:

  • The simulation demonstrated that initially warm water formed a higher percentage of fully bonded water cells (f(4)) earlier compared to initially cool water.
  • The formation of a high percentage of f(4) cells was interpreted as the onset of ice formation.
  • The study provides a model-based explanation for the observed Mpemba effect.

Conclusions:

  • Cellular automata models can effectively simulate the Mpemba effect.
  • Initial temperature significantly influences the rate of ice crystal nucleation and growth, as evidenced by f(4) cell formation dynamics.
  • The findings suggest that differences in initial thermal states contribute to the Mpemba effect.