vortical การใช้

• Identified the mechanism by which a turbulent region grows into a laminar, vortical flow.
• This is a highly tricky exercise because vortical flow fields act in a complicated ( what scientists call nonlinear ) manner, making prediction difficult.
• Boeing wants to use existing wing and tail control surfaces that shift up and down about 20 degrees in a coordinated fashion to disrupt the vortical flow.
• At the dynamic level, the fact that vortex lines are transported by any flow governed by the classical Euler equations implies conservation of any vortical structure within the flow.
• "The key to mitigation is to establish a vortex wake consisting of two or more vortical pairs that are unstable and susceptible to rapid breakup, " he explains.
• A sub-scale N 2 O / PE Dual-Vortical-Flow ( DVF ) hybrid engine hot-fire test in 2014 has delivered an averaged sea-level Isp of 280 sec, which indicates that the system has reached around 97 % combustion efficiency.