normal shock wave

normal shock

A shock wave at 90° to the direction of airflow. It is found ahead of an airfoil approaching the speed of sound. Airflow behind the normal shock is invariably subsonic. Also called a normal shock wave.

plane wave

A shock wave whose front is normal to the direction of propagation. See normal shock wave.
References in periodicals archive ?
Subsequent chapters address steady one-dimensional flow, normal shock waves, oblique shock and expansion waves, compressible flow equations, similarity rule, and two-dimensional compressible flows, among other topics, ending with chapters on ramjet, and jets.
Calculation of two-phase dispersed droplet-in-vapor flows including normal shock waves.