Unsteady Flow Computations around Moving Airfoils by Overset Unstructured Grid Method

A staggered overset grid method for resolved simulation of incompressible flow around moving spheres

Article history: Received 5 August 2016 Received in revised form 13 November 2016 Accepted 16 December 2016 Available online 23 December 2016

An overset-grid method for 3D unsteady incompressible flows

A composite-grid numerical method is developed for simulating unsteady, three-dimensional (3D), incompressible flows in complex geometries. The governing equations are solved using a second-order accurate, finite-volume method based on the dual time-stepping artificial compressibility approach. Overset grids are employed to discretize arbitrarily complex geometries, and a new interface algorith...

An Overset Adaptive Cartesian/Prism Grid Method for Moving Boundary Flow Problems

The use of overset grids in CFD started more than two decades ago, and has achieved tremendous success in handling complex geometries. In particular, overset grids have the advantage of avoiding grid remeshing when dealing with moving boundary flow problems. Traditionally overset grids were mainly used with structured grids to simplify the grid generation process, because a complex computationa...

A moving overset grid method for interface dynamics applied to non-Newtonian Hele–Shaw flow

We present a novel moving overset grid scheme for the accurate and efficient long-time simulation of an air bubble displacing a non-Newtonian fluid in the prototypical thin film device, the Hele–Shaw cell. We use a two-dimensional generalization of Darcy s law that accounts for shear thinning of a non-Newtonian fluid. In the limit of weak shear thinning, the pressure is found from a ladder of t...

Transonic Turbulent Flow Computations on Unstructured Triangular Grids