Gaussian Heat Source

Hi,
I am working on simulation of single spark EDM and I am taking the input parameter as heat flux and I having problem in defining the gaussian heat source. I have gone through the forum but sincerely sir there is no such help provided in there. Please give any link, picture or any other documents related to the gaussian heat source.

Thank you,
Randhir Kumar Shah,
4th Year Undergraduate (B-Tech/M-Tech Dual),
Department of Mechanical Engineering,
Indian Institute of Technology Kanpur,
Kanpur, U.P, 208016
INDIA
+91 9005850159/8765246122
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IIT Kanpur