VMFL055

VMFL055
Transitional Recirculatory Flow inside a Ventilation Enclosure

Overview

Reference

A. Restivo, Turbulent Flow in Ventilated Rooms, Ph.D. Thesis, University of London, UK, 1979.

Solver Ansys Fluent

Physics/Models Transitional turbulence modeling (k-kl model)

Input File

VMFL055_FLUENT.cas

Project Files Link to Project Files Download Page

Test Case

Flow inside an enclosure similar to a ventilated room is modeled. The flow field is transitional and dominated by recirculation. Reynolds number is based on the inlet dimension and is around 5000.

Figure 138: Flow Domain

Material Properties	Geometry	Boundary Conditions
Density : 1.225 kg/m³ Viscosity = 1.7894 X 10^-5 kg/m-sec	Height of the enclosure (H) = 3 m Length of the enclosure = 9 m (3 H) Inlet : 0.056 H Outlet : 0.16 H	Inlet velocity = 0.45 m/S

Material Properties

Geometry

Boundary Conditions

Density : 1.225 kg/m³

Viscosity = 1.7894 X 10^-5 kg/m-sec

Height of the enclosure (H) = 3 m

Length of the enclosure = 9 m (3 H)

Inlet : 0.056 H

Outlet : 0.16 H

Inlet velocity = 0.45 m/S

Analysis Assumptions and Modeling Notes

The flow is modeled using transitional turbulence models.

Results Comparison for Ansys Fluent

Figure 139: Comparison of X Velocity at Y = 2.916 m