Characteristics of Turbulent Swirling Flow in a Straight Pipe : Swirl Decay in Wide Range of Swirl Strength(Fluids Engineering)

Numerical Investigation of the Role of the Inlet Swirl Velocity Profile on Decay of Swirl in Pipe Flow

The influence of the inlet swirl velocity profile shape on the decay of swirl in steady-state, incompressible, laminar pipe flows is investigated by means of computational fluid dynamics. The investigation is carried out for a Reynolds number of 2000, which marks the upper limit of the laminar flow behavior for unidirectional pipe flow. Computations are performed for two different mean swirl nu...

effect of sub-grid scales on large eddy simulation of particle deposition in a turbulent channel flow

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Forced Response: Turbulent Swirl Combustor

Since a large number of physical variables are involved in the combustion process occurring in complex swirl stabilized combustors, simple systems (burner stabilized laminar flat flames) were initially studied (see chapters 5 and 6). Having understood the dynamics of laminar flat flames and developed methodologies to build reduced order flame dynamic models, the technique developed to measure t...

Part III Swirl Stabilized Turbulent Flame Dynamics

Swirl boundary layer and flow separation at the inlet of a rotating pipe

When a fluid enters a rotating circular pipe, an angular momentum or swirl boundary layer appears at the wall and interacts with the axial momentum boundary layer. In the centre of the pipe, the fluid is free of swirl and is accelerated due to boundary layer growth. Below a critical flow number, defined as the ratio of average axial velocity to circumferential velocity of the pipe, there is flo...