Conceptual diagram of the influence of horizontal vortex tubes on tornado genesis and development during the intensification stage: (a) the effect of horizontal vortex tubes on tornado rotation; (b) ...

A massive roll cloud blew over Timbercreek Canyon, Texas on Monday. A roll cloud is a horizontal cloud formation that glides relatively low to the ground, according to the National Oceanic and ...

This paper describes the formulation of a new model for the wake of a horizontal-axis wind turbine. As in many other models, the trailing vorticity is represented by a number of vortex lines which ...