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   new perspectives on the laminar boundary layer physics in a polarized pressure field with temperature gradient: an analytical approximation to blasius equation  
   
نویسنده moeini m. ,chamani m. r.
منبع journal of applied fluid mechanics - 2017 - دوره : 10 - شماره : 4 - صفحه:1071 -1077
چکیده    This study proposes a semi-analytic approximation to the laminar boundary layer growth in a polarized pressure field with temperature gradient represented by the joint blasius-energy equation. we illuminate that f ''(η) is a probability density function (pdf) approximated by an amended gaussian pdf with zero mean and standard deviation σ=2.18 . this implies a diffusive structure for the molecular momentum conversion as well as the energy flux in the boundary layer. a new limit for the boundary layer edge is also presented. results suggest an augmented boundary layer when compared to accepted values in the literature. we also reproduce the inverse proportionality of the free stream velocity to the diffusion of both momentum and energy.
کلیدواژه blasius laminar flow ,semi-analytic approximation ,boundary layer thickness ,momentum diffusion ,energy diffusion
آدرس amirkabir university of technology, department of civil engineering, ایران, isfahan university of technology, department of civil engineering, ایران
پست الکترونیکی chamaniiut@gmail.com
 
     
   
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