3D-PURLES - INCOMPRESSIBLE FLOW SIMULATIONS - CSIR

3D-Purles - Incompressible flow simulations

Highlights

Extensive research in the area of turbulence and transition for incompressible flows
The in-house incompressible flow solution code 3D-PURLES (3D parallel multi-block pressure-based finite volume NS code) is capable of handling both external and internal flows.
3D-PURLES is constantly upgraded with state-of the art techniques to handle the complex flows with better accuracy
3D-PURLES extensively used for various hydrodynamic and low speed aerodynamic problems under different sponsored R & D projects
The transition phenomenon in particular for MAV wings are captured using 3D-PURLES
Large Eddy Simulations of flow past circular cylinder carried out using 3D-PURLES has captured most of the flow physics encountered in the different flow regimes.
The in-house structured grid generation tool which on differential-algebraic hybrid procedure is extensively used for two-dimensional as well as simple three-dimensional geometries
Commercial grid generation tool POINTWISE is also used to generate structured gird for complex geometry and unstructured grids
The open source CFD tool OpenFOAM has been explored using both structured as well as unstructured grids
Detached Eddy Simulation is the ongoing research
Research Papers – 6 Journal, 41 Conference, 27 documents

Major features of the in-house code 3D-PURLES

Multiblock Structured Boundary-Orthogonal Body-Fitted Curvilinear grids
Cell centered with cartesian velocity components
Time accurate Implicit pressure based finite volume approach
Second order accurate schemes for spatial and temporal discretisation
SIMPLE algorithm with momentum interpolation for cell centered variables
Turbulence models : – k-e, k-w, v2f, SST, SA
Transition models :- k_T– k_L– ω and g – Re_θSST
Large Eddy Simulation – Smagorinsky and Dynamic sub-grid scale models
Parallelised using domain decomposition methodology

Turbulence Modelling for external steady flows

Hydrodynamic applications : Submarine Sonar Dome, Torpedoes, Marine propellers, ship hulls with sonar dome
DWR Radome Structures , Water tanks
Airfoils, wings
Aerostat balloons
Mav wings and fuselage
Impinging jet on a plate
Prolate Spheroid at high Re

3D-PURLES simulations of hydrodynamic problems using k-e turbulence model. These simulations were carried on NAL Flosolver Mk5 super computer .

3D-PURLES simulations using k-e turbulence model could the major features of the complex flow and is found to be in good agreement with IISc measurements