Analysis of Current Application of Transonic Flow Aerodynamics

Abstract

Since man invented flying machines, we have always craved faster, more stable aircraft. In the 1940s, aircraft designers encounter a series of troublesome problems regarding exceeding the speed of sound. Those problems appear because as the aircraft approaches the speed of sound, a large increase in aerodynamic drag takes place and significantly unstabilized the aircraft. The definition of transonic flow is relatively broad, in fact, any fluid approaching the speed of sound can be considered transonic flow. Theoretically, for any point in space, the fluid motion in turbulence satisfies the nonlinear N-S equation, so it is possible to do at least numerical operations with a numerical computer, however, the workload is enormous. After the 1960s, the development of supercomputers made it possible to do numerical calculations in fluid mechanics, which has completely changed the CFD application. Transonic flow, as one of the branches with great practicality and relatively simple arithmetic in CFD, has greatly advanced the development of aircraft.