VMFL011

VMFL011
Laminar Flow in a Triangular Cavity

Overview

Reference R. Jyotsna, S.P. Vanka. “Multigrid Calculation of Steady, Viscous Flow in a Triangular Cavity”. J. Comp. Phys., Vol 122, pp. 107-117, 1995.

Solver Ansys Fluent, Ansys CFX

Physics/Models Viscous flow, driven by a moving wall

Input Files

driv.cas for FLUENT

driven_cavity.def for Ansys CFX

Project Files Link to Project Files Download Page

Test Case

Laminar flow induced by the motion of the top wall of a triangular cavity (Figure 20: Flow Domain). The side walls are stationary.

Figure 20: Flow Domain

Material Properties	Geometry	Boundary Conditions
Density = 1 kg/m³ Viscosity = 0.01 kg/m-s	Height of the triangular cavity = 4 m Width of the base = 2 m	Velocity of the top (base) wall = 2 m/s Other walls are stationary

Material Properties

Geometry

Boundary Conditions

Density = 1 kg/m³

Viscosity = 0.01 kg/m-s

Height of the triangular cavity = 4 m

Width of the base = 2 m

Velocity of the top (base) wall = 2 m/s

Other walls are stationary

Analysis Assumptions and Modeling Notes

The flow is steady. Pressure based solver is used. A hybrid mesh with triangular and quadrilateral cells is used to discretize the domain.

Results Comparison for FLUENT

Figure 21: Comparison of Distribution of Normalized X-Velocity Along a Vertical Line that Bisects the Base of the Cavity

In this figure, X-velocity is normalized by the velocity of the moving wall.

Results Comparison for Ansys CFX

Figure 22: Comparison of Distribution of Normalized X-Velocity Along a Vertical Line that Bisects the Base of the Cavity

In this figure also the X-velocity is normalized by the velocity of the moving wall.