An investigation of coherent structures in laminar boundary layer flames

Numerical Investigation of Flow Structures and Interactions due to a Pitched Synthetic Jet in a Laminar Boundary Layer

A numerical investigation is conducted to study flow structures and interactions that are caused by a pitched synthetic jet placed in a laminar (Blasius) boundary layer with zero pressure gradient. Simulations are performed for various permutations of jet parameters including pitch angle (i.e., θ=60, 75, and 90), blowing ratio (i.e., Cb = 0.5, 1.0, 1.5, and 2.0), and non-dimensional actuation f...

Laminar Boundary Layer Flow of Sisko Fluid

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames

Modeling the realistic burning behavior of condensed-phase fuels has remained out of reach, in part because of an inability to resolve the complex interactions occurring at the interface between gas-phase flames and condensed-phase fuels. The current research provides a technique to explore the dynamic relationship between a combustible condensed fuel surface and gas-phase flames in laminar bou...

Investigation of 2d and 3d Boundary-layer Disturbances for Active Control of Laminar Separation Bubbles

In the present paper mechanisms exploiting hydrodynamic instability of a laminar baseflow in order to control the size of a separation bubble are investigated in detail by means of 2D and 3D direct numerical simulations (DNS). An actuator introduces low amplitude TollmienSchlichting like boundary-layer disturbances into the flow upstream of the bubble, which become amplified and trigger early l...

A Modified Flux Vector Splitting Scheme for Flow Analysis in Shock Wave Laminar Boundary Layer Interactions

The present work introduces a modified scheme for the solution of compressible 2-D full Navier-Stokes equations, using Flux Vector Splitting method. As a result of this modification, numerical diffusion is reduced. The computer code which is developed based on this algorithm can be used easily and accurately to analyze complex flow fields with discontinuity in properties, in cases such as shock...