Diffuser (thermodynamics) - Wikipedia
A supersonic diffuser is a duct that decreases in area in the direction of flow which causes the fluid temperature, pressure, and density to increase, and velocity to decrease. These changes occur because the fluid is compressible. Shock waves may also play an important role in a supersonic diffuser.
Subsonic Inlets: The subsonic inlet must satisfy two basic requirements: Diffusion of the free-stream flow to the compressor inlet condition at cruise. Acceleration of static air to the compressor inlet condition at takeoff.
Supersonic inlet aerodynamics involves flow compression, flow deceleration, shock waves, turbulent boundary layers, shock / boundary layer interactions, separated flow, flow control, etc... Goals are to maximize total pressure recovery, limit total pressure distortion, and limit inlet drag.
Subsonic Diffusers - (Aerodynamics) - Fiveable
Subsonic diffusers are aerodynamic devices designed to slow down the flow of air or other gases while increasing their pressure. These components play a critical role in various applications, such as in aircraft engines and wind tunnels, where efficient airflow management is essential.
FLOW OF GASES AND STEAM THROUGH DIFFUSERS - fluid …
What are diffusers and applications of diffuser theory. Subsonic and Supersonic diffuser. A diffuser is a channel with a continuously changing flow cross-section. Fluid flow in the diffuser is a process that primarily involves an increase in pressure and a decrease in kinetic energy.
Fraser Conical Diffuser: Study #1 - NASA
The shading of the Mach number for the Fraser subsonic conical diffuser. Introduction. This test case computes incompressible turbulent flow in a conical diffuser, and is referred to as the Fraser (flow A) case from the 1968 AFOSR-IFP Stanford Conference on Computation of Turbulent Boundary Layers.
Fraser Subsonic Diffuser - NASA
Flow Description. This validation case examines the turbulent, subsonic flow in a pipe attached to a conical diffusing section. Table 1 lists the flow conditions for the inflow. The Reynolds number is based on the diameter of the pipe. These conditions are referred to as the Fraser (Flow A) case from the 1968 AFOSR-IFP Stanford Conference on ...
A computational study of the separated flow through a 2-D asymmetric subsonic diffuser has been performed. The Wind Computational Fluid Dynamics code is used to predict the separation and reattachment behavior for an incompressible diffuser flow. …
Introduction to Flow Control - SpringerLink
Jan 1, 2002 · In this chapter classical tools of flow control are emphasized, leaving the more modern strategies to the following chapter. Methods of control to achieve transition delay, separation postponement, lift enhancement, drag reduction, turbulence augmentation, or noise suppression are considered.
Effects of Inlet Conditions on Performance of Two-Dimensional Subsonic …
Performance data and flow characteristics for subsonic two-dimensional plane-wall diffusers are presented for the following conditions.