Integral analysis of boundary layer flows with pressure gradient

Study of Boundary Layer Convective Heat Transfer with Low Pressure Gradient Over a Flat Plate Via He’s Homotopy Perturbation Method

Higher-order Turbulence Products of Velocity and Temperature for Adverse Pressure Gradient Boundary Layer Flows

Higher-order turbulent products of momentum and temperature are experimentally presented for heated boundary layers subjected to adverse pressure gradient (APG) and zero pressure gradient (ZPG) flows. Clauser’s equilibrium parameter, b, was set to 1.8 for APG case and 0 for ZPG case. The temperature difference between the heated wall and free stream was held constant at 12°C. Triple wire measur...

LES of the adverse-pressure gradient turbulent boundary layer

We describe large-eddy simulations (LES) of the flat-plate turbulent boundary layer in the presence of an adverse pressure gradient. The stretched-vortex subgrid-scale model is used in the domain of the flow coupled to a wall model that explicitly accounts for the presence of a finite pressure gradient. The LES are designed to match recent experiments conducted at the University of Melbourne wi...

Structure of the zero-pressure-gradient turbulent boundary layer.

A processing of recent experimental data by Nagib and Hites [Nagib, H. & Hites, M. (1995) AIAA paper 95-0786, Reno, NV) shows that the flow in a zero-pressure-gradient turbulent boundary layer, outside the viscous sublayer, consists of two self-similar regions, each described by a scaling law. The results concerning the Reynolds-number dependence of the coefficients of the wall-region scaling l...

MD boundary conditions for pressure gradient flows: nano-mixing, and nano-droplet deformation in extensional flows

We present new algorithms for simulating pressuregradient flows in molecular dynamics (MD) simulations. Nano-channel inlet and outlet non-periodic boundary conditions are implemented using hydrodynamic statereservoirs and flux boundary models at arbitrary boundaries of the domain geometry. We demonstrate the new method in a complex nano-mixer configuration and for droplet deformation in extensi...