# subsonic flow

## subsonic flow

[¦səb′sän·ik ′flō]
(fluid mechanics)
Flow of a fluid at a speed less than that of the speed of sound in the fluid. Also known as subcritical flow.
References in periodicals archive ?
The boundary conditions in CFX-Pre were as follows: a) the air speed was applied to the input area with the lateral curtains with a subsonic flow regime and normal velocity of 0.
The method is applied to BesselAEs functions, Navier-Stokes equations in Cartesian and cylindrical polar coordinates, blood flow through arteries, subsonic flow past a wavy wall, steady transonic flow, LaplaceAEs equation for a circular disc, and flow near a rotating disc in a fluid at rest.
Cesnik, "Nonlinear Aeroelastic Anaylsis of Complete Aircraft in Subsonic Flow," Journal of Aircraft 37, no.
Table 1: Analogous quantities of classical hydraulic analogy 2D gas flow Free Surface incompressible water flow Temperature ratio T/T0 Hydraulic depth ratio h/h0 Density ratio Hydraulic depth ratio h/h0 Pressure ratio P/P0 Sq of hydraulic depths ratio (h/h0)2 Sound Velocity a0 Wave Velocity _(gh) Mach number V/ a0 Froude number V/_(gh) Velocity ratio V/Vmax Velocity ratio V/ Vmax Subsonic flow M<1 Streaming Water flow Fr<1 Supersonic flow M>1 Shooting Water Flow Fr>1 Compressible shock Hydraulic jump
Ryan Carelli, "Rocket Stability in Subsonic Flow," third place.
However, the obtained pressure profiles of shock waves displayed nonequilibrium condition indicated by the thickness of the shock waves and the subsonic flow behind them.
This requires the aerodynamics of the vehicle be characterized well into the subsonic flow regime, which is difficult to predict experimentally as well as computationally.
Two-dimensional Euler equations calculate supersonic flow past a wedge, subsonic and transonic flow past a circular arc airfoil, subsonic flow past an ellipse, and supersonic flow past a cone.
Within their internal gas paths, jet engines operate in subsonic flow regimes.
Past studies have dealt with wind tunnel tests on flat plates and plane cascades, usually with subsonic flows at lower Reynolds numbers.

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