(a) Epidermal tissue is ablated using a laser such that a uniform heat generation rate of 500 kW/m3 is present in the ti

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A Epidermal Tissue Is Ablated Using A Laser Such That A Uniform Heat Generation Rate Of 500 Kw M3 Is Present In The Ti 1 (75.12 KiB) Viewed 26 times

(a) Epidermal tissue is ablated using a laser such that a uniform heat generation rate of 500 kW/m3 is present in the tissue of area 15 mm² and depth 2 mm. The temperature distribution across this epidermal tissue thickness at a certain instant in time is given by: T(x) = 50 + 600x +2000x2 The tissue has a mass fraction of 0.67. (i) Calculate the rate of heat transfer into the tissue surface and at a depth of 1.5 mm. [7 marks] (ii) Determine the rate of change of energy storage in the tissue. [3 marks] (iii) Determine the time rate of temperature change at the tissue surface, and at 0.25 and 0.5 mm depth into the tissue. [7 marks] (iv) Determine the temperature of the epidermal tissue at a depth of 1.2 mm after 10 seconds of the applied ablation. [3 marks]