Dynamic Instability of Shallow Shells Interacting with a Three-Dimensional Potential Gas Flow

Three Dimensional Laminar Convection Flow of Radiating Gas over a Backward Facing Step in a Duct

In this study, three-dimensional simulations are presented for laminar forced convection flow of a radiating gas over a backward-facing step in rectangular duct. The fluid is treated as a gray, absorbing, emitting and scattering medium. The three-dimensional Cartesian coordinate system is used to solve the governing equations which are conservations of mass, momentum and energy. These equations...

Three-dimensional instability of a two-layer Dean flow

Stability of a two-layer Dean flow in a cylindrical annulus with respect to three-dimensional perturbations is studied by a global Galerkin method. It is shown that for large inner radius of the annulus ~i! the instability becomes three-dimensional if one of the fluid layers is thin, ~ii! its onset is not affected by possible small deformations of the interface, and ~iii! multiple three-dimensi...

The Solution of Three Dimensional Incompressible Potential Flow Through Rectangular Ducts

Three-dimensional instability in flow over a backward-facing step

Results are reported from a three-dimensional computational stability analysis of flow over a backward-facing step with an expansion ratio (outlet to inlet height) of 2 at Reynolds numbers between 450 and 1050. The analysis shows that the first absolute linear instability of the steady two-dimensional flow is a steady three-dimensional bifurcation at a critical Reynolds number of 748. The criti...

The Solution of Three Dimensional Incompressible Potential Flow Through Rectangular Ducts