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Evaporation effect in domain of tissue subjected to a strong external heat source

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EN
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EN
Thermal processes proceeding in domain of biological tissue subjected to a strong external heat flux can cause the water evaporation effect (the concentration of liquid in the tissue is taken to be 79%). The phase change is assumed to occur between 98 and 102°C. This rather artificial range results from the mathematical model basing on a concept of fixed domain approach which is used in this paper. The high temperature of tissue can be an effect of accidental burns or conscious activities connected with the hyperthermia treatments. From the mathematical point of view the problem is described by the well known Pennes equation with additional term controlling the evaporation process and a set of boundary-initial conditions. On a stage of numerical simulation the finite difference method is used. The examples of computations are also presented.
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Bibliografia
  • [1] Abraham J.P., Sparrow E.M., A thermal-ablation bioheat model including liquid-to vapor phase change, pressure- and necrosis-dependent perfusion, and moisture-dependent properties, International Journal of Heat and Mass Transfer 2007, 50, 2537-2544.
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  • [4] Mochnacki B., Majchrzak E., Kałuża G., Modelling of biological tissue freezing process with regard to sensitivity analysis, Acta of Bioengineering and Biomechanics 2004, Vol. 6, Suppl. 1, 480-484.
  • [5] Stańczyk M., Telega J.J., Modelling of heat transfer in biomechanics - a review. Part I: Soft tissues, Acta of Bioengineering and Biomechanics 2002, Vol. 4, No 1, 31-61.
  • [6] Majchrzak E., Mochnacki B., Dziewoński M., Jasiński M., KałuŜa G., Modelowanie numeryczne przepływu biociepła, Nauka, Innowacje, Technika 2005, 2(9), 30-38.
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  • [8] Liu J., Xu L.X., Boundary information based diagnostics on the thermal states of biological bodies, Int. Journal of Heat and Mass Transfer 2000, 43, 2827-2839.
  • [9] Rai K.N., Rai S.K., Heat transfer inside the tissues with supplying vessel for the case when heat generation and blood perfusion are temperature dependent, Heat and Mass Transfer 1999, 35, 345-350.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPC6-0005-0014
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