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Lasers in Eng., Vol. 17, pp. 345360 Reprints available directly from the publisher
 

Summary: Lasers in Eng., Vol. 17, pp. 345360
Reprints available directly from the publisher
Photocopying permitted by license only
c 2007 Old City Publishing, Inc.
Published by license under the OCP Science imprint,
a member of the Old City Publishing Group
Laser Evaporative Heating: Exact Solution or
Temperature Rise Due to Step Input Pulse
H. AL-QAHTANI AND B. S. YILBAS
KFUPM Box 1913, Dhahran 31261, Saudi Arabia
An exact solution for the temperature distribution during evaporative
heating of a solid following a laser input pulse has been formulated.
The heat transfer equation was made non-dimensional and the closed
form solution obtained using the Laplace transformation method. The
speed of the receding surface was expressed after assuming an energy
balance in the surface region. A numerical solution of the heat transfer
equation was necessary so that the temperature predictions obtained
from the closed-form solution can be compared. It is found that the
temperature rises rapidly in the early heating period because of the
energy gain by the substrate material from the irradiated area and only

  

Source: Al-Qahtani, Hussain M. - Mechanical Engineering Department, King Fahd University of Petroleum and Minerals

 

Collections: Engineering