Computer simulation for postmortem cooling processes in the outer ear

Yoshimasa Kanawaku; Jun Kanetake; Atsuki Komiya; Shigenao Maruyama; Masato Funayama

doi:10.1016/j.legalmed.2006.09.006

Computer simulation for postmortem cooling processes in the outer ear

Yoshimasa Kanawaku, Jun Kanetake, Atsuki Komiya, Shigenao Maruyama, Masato Funayama

IFS - Complex Flow Research Division

Tohoku University

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Introduction: A simulation using a computer model was undertaken to investigate postmortem cooling patterns in the outer ear. Methods: Cooling patterns were analyzed using a 3-dimensional head model built from brain CT images of a volunteer. The simulation was verified with a case subject under constant environmental conditions to obtain an appropriate heat transmission coefficient. Results: The cooling pattern of the head model agreed with that of the case subject when the heat transmission coefficient was 6 W/m² °C, and it could be approximated to a single exponential curve. Discussion: This is the first simulative study to show the postmortem cooling pattern of the head of an adult human. Our head model will prove useful to predict the cooling patterns of not only the outer ear but also of the entirety of the head.

Original language	English
Pages (from-to)	55-62
Number of pages	8
Journal	Legal Medicine
Volume	9
Issue number	2
DOIs	https://doi.org/10.1016/j.legalmed.2006.09.006
Publication status	Published - 2007 Mar

Keywords

Finite element model
Outer ear
Postmortem cooling
Simulation
Time of death

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10.1016/j.legalmed.2006.09.006

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title = "Computer simulation for postmortem cooling processes in the outer ear",

abstract = "Introduction: A simulation using a computer model was undertaken to investigate postmortem cooling patterns in the outer ear. Methods: Cooling patterns were analyzed using a 3-dimensional head model built from brain CT images of a volunteer. The simulation was verified with a case subject under constant environmental conditions to obtain an appropriate heat transmission coefficient. Results: The cooling pattern of the head model agreed with that of the case subject when the heat transmission coefficient was 6 W/m2 °C, and it could be approximated to a single exponential curve. Discussion: This is the first simulative study to show the postmortem cooling pattern of the head of an adult human. Our head model will prove useful to predict the cooling patterns of not only the outer ear but also of the entirety of the head.",

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AU - Kanawaku, Yoshimasa

AU - Kanetake, Jun

AU - Komiya, Atsuki

AU - Maruyama, Shigenao

AU - Funayama, Masato

PY - 2007/3

Y1 - 2007/3

N2 - Introduction: A simulation using a computer model was undertaken to investigate postmortem cooling patterns in the outer ear. Methods: Cooling patterns were analyzed using a 3-dimensional head model built from brain CT images of a volunteer. The simulation was verified with a case subject under constant environmental conditions to obtain an appropriate heat transmission coefficient. Results: The cooling pattern of the head model agreed with that of the case subject when the heat transmission coefficient was 6 W/m2 °C, and it could be approximated to a single exponential curve. Discussion: This is the first simulative study to show the postmortem cooling pattern of the head of an adult human. Our head model will prove useful to predict the cooling patterns of not only the outer ear but also of the entirety of the head.

AB - Introduction: A simulation using a computer model was undertaken to investigate postmortem cooling patterns in the outer ear. Methods: Cooling patterns were analyzed using a 3-dimensional head model built from brain CT images of a volunteer. The simulation was verified with a case subject under constant environmental conditions to obtain an appropriate heat transmission coefficient. Results: The cooling pattern of the head model agreed with that of the case subject when the heat transmission coefficient was 6 W/m2 °C, and it could be approximated to a single exponential curve. Discussion: This is the first simulative study to show the postmortem cooling pattern of the head of an adult human. Our head model will prove useful to predict the cooling patterns of not only the outer ear but also of the entirety of the head.

KW - Finite element model

KW - Outer ear

KW - Postmortem cooling

KW - Simulation

KW - Time of death

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Computer simulation for postmortem cooling processes in the outer ear

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