VMFL058

VMFL058
Turbulent Flow in an Axisymmetric Diffuser

Overview

Reference

R. S. Azad, S. Z. Kassab. “Turbulent Flow in a Conical Diffuser: Overview and Implications”. Phys. Fluids A Vol 1, pg. 564, 1989

Solver Ansys Fluent

Physics/Models

Turbulent flow with adverse pressure gradient

Input File

VMFL058_FLUENT.cas

Project Files Link to Project Files Download Page

Fully developed turbulent flow is modeled in an axisymmetric diffuser. The flow is fully developed at the inlet to the diffuser.

Figure 144: Flow Domain

Material Properties	Geometry	Boundary Conditions
Density = 1 kg/m³ Viscosity = 1.64 X 10^-5 kg/m-s	Included angle for the divergent section = 8⁰ Length of Inlet section (straight) = 6 m Inlet radius = 1 m Outlet radius = 2 m	Fully developed turbulent profile at inlet with an average velocity = 1 m/s

Material Properties

Geometry

Boundary Conditions

Density = 1 kg/m³

Viscosity = 1.64 X 10^-5 kg/m-s

Included angle for the divergent section = 8⁰

Length of Inlet section (straight) = 6 m

Inlet radius = 1 m

Outlet radius = 2 m

Fully developed turbulent profile at inlet with an average velocity = 1 m/s

Steady turbulent flow.

Figure 145: Comparison of Pressure Coefficient along the Divergent Diffuser Wall