The generation and sustenance of electric fields in sandstorms
Mustafa Mutiur Rahman,
Wan Cheng,
Ravi Samtaney
Abstract:Sandstorms are frequently accompanied by the generation of intense electric fields and lightning. In a very narrow region close to the ground level, sand particles undergo a charge exchange mechanism whereby larger (resp. smaller) sized sand grains become positively (resp. negatively) charged are then entrained by the turbulent fluid motion. Our central hypothesis is that differently sized sand particles get differentially transported by the turbulent flow resulting in a large-scale charge separation, and henc… Show more
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