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Showing 1 to 9 of 9 for “"overset grids"”.
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Time-stable high-order finite difference methods for overset grids
Overset grids provide an efficient and flexible framework for implementing high-order finite difference methods to simulate compressible viscous flows over complex geometries. Although overset methods have been widely used to solve time-dependent partial differential equations, very few proofs of …
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Application of overset grids for aerodynamic assessment of an advanced civil transport aircraft
Simulations are presented for 1:20 and 1:11 scale configurations of an advanced civil transport designed to use boundary layer ingestion (BLI). Comparison with wind tunnel results on unpowered configurations show that the computed and measured lift slopes agree within 15% and the drag at simulated …
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Unstructured grid technologies for hydrodynamic applications with bodies in relative motion and mesh deformation
… developed to manage deforming surface and volume grids for both aerodynamic and hydrodynamic applications. The approach is universal and independent of grid type. Also, it requires minimal inter-processor communication and is thus perfectly suitable to a parallel platform. The original scheme of …
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Studies in Tip Vortex Formation, Evolution and Control
… the equations are solved on multiple {\em overset} grids that ensure adequate resolution in an efficient manner. For the RANS closure, a one equation wall-based turbulence model is used with a correction to the production term in order to account for the stabilizing effects of rotation in …
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Propeller Noise Prediction of an Urban Air Mobility Vehicle in Urban Environment
… This section explores the application of the Overset mesh method for propeller simulations in OpenFOAM and compares its performance against the Arbitrary Mesh Interface (AMI) approach in OpenFOAM. While AMI has been extensively validated for rotor acoustics, it is limited in handling large …
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Numerical and experimental investigation of VG flow control for a low-boom inlet
… using three-dimensional, structured, chimera (overset) grids and the WIND-US code were conducted. Flow control cases included conventional and novel types of vortex generators at positions both upstream of the terminating normal shock (supersonic VGs) and downstream (subsonic VGs). The …
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Numerical Studies of the Jet Interaction Flowfield with a Main Jet and an Array of Smaller Jets
… number of cells. To this end , Chimera or overset grids were employed in the simulation of the secondary injectors. Grid convergence was shown to be achieved for the case of single injection by conducting a thorough convergence study. The discretization error was calculated through a …
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Direct numerical simulation of viscoplastic particulate flows
… and wider flow field. In this work we adopt the overset grid method, allowing each particle to be explicitly represented with a curvilinear grid, thereby enabling cost-effective resolution of boundary layer flows. Secondly, the governing equations of viscoplatic fluid flow are non-linear, even in …