BBIPED: BCAM-Baltogar Industrial Platform for Engineering design

Carmen Alonso-Montes, Imanol García, Ali Ramezani, Lakhdar Remaki

BCAM – Basque Center for Applied Mathematics (Bilbao), Spain

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Motivation

New industrial challenges must be faced through the proposal and implementation of innovative techniques

Domain: Turbomachinery Applications

The BCAM-Baltogar Industrial Platform for Engineering Design (BBIPED) was designed to cope with the full CFD workflow in turbomachinery applications

Integrates other open-source solutions (Salome platform and Paraview) in the life cycle

Automatize the usage of SU2, as main solver engine

Customized solutions have been integrated in the platform

Baltogar Axial Fan

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BBIPED in a nutshell

CAD/Mesh generation (Salome Platform)

Some customized functionality is provided (e.g. automatic mesh generation)

Solver simulation (SU2 tool from Standford)

BBIPED Lib with customized techniques (e.g. Multizone MRF and Virtual MRF)

Data post-processing & Visualization (Paraview Tool)

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Feature 1: BBIPED GUI

User friendly Specific views adapted to experts and non-expert usersHelp supportEasy set up of solver engines

SU2 is by default, but you can choose another SU2-based solversSolutions for Multizone and Virtual Multiple Rotating Frame included

Validation fieldsGraphical evolution of the simulation

The main goal of BBIPED GUI is to homogenize the usage by the engineers, easily adapting to different profiles

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BBIPED GUI: Easy parameter configuration & help

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BBIPED GUI: Graphical control of the simulation

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Feature 2: BBIPED Geometry Parametrization & Automatic Mesh Generation

Analysis of common and variable partsA formal analysis of the meshes must be performed manually

Identification of Parametrization pointsIdentification of Salome Commands

The formal template is created from the prior analysis

Users can create a new mesh based on templates through BBIPED GUIBBIPED Geometry Engine will create a Salome compliant geometry fileSalome will generate the desired Mesh based on user configuration

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Experiments: Automatic Mesh Generation

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Feature 3: BBIPED Multiple Rotating Frame

Goal: Accurate and cost effective simulation of turbulent flow caused by fixed and rotating frames

Solution: Multizone Multiple Rotating Frame (MRF)

Advantages:The Navier-stokes equations are rewritten in the rotating frame, therefore no need to rotate physically the mesh.

But only steady state is solved

Disadvantages:The interface is created at CAD level, which is not often an easy task.

In case interface adjustment is needed, this implies to change CAD, then re-mesh again

Alternatives

Virtual MRF (VMRF)Definition of a virtual interface at the solver level while using only one mesh.

Any modification will done at the solver input, no need to re-mesh.

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Experiments: MMRF & VMRF

Baltogar turbofan meshTests were made using BBIPED (MMRF and VMRF approaches) and commercial tools (Ansys-Fluent v. 14.5) Assessment includes all basic aspects of turbomachinery

Rotating fan, fix volute and mixing zone with high speed free streamMach flow = 0.6Angular speed of 150 rad/sFlow is assumed to be inviscid and compressible

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Multizone MRF

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Experiments: MMRF & VMRF

Pressure along the dark red lineUsing BBIPED (MMRF and VMRF) And compared with ANSYS Fluent

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Experiments: MRF vs Virtual MRFNREL Wind Turbine: M =0.03, Ω=7.4rad/s

MRF vs VMRF results at different blade cross section

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BBIPED - Video

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Conclusions & Roadmap

BBIPED is oriented to industrial needs

Innovative and cutting-edge approaches techniques have been implemented

VMRF and MMRF with good results in terms of accuracy compared with commercial tools

Automatic mesh geometry for a set of turbofans of Baltogar

Defined a formal methodology to deal with automatic mesh geometry analysis and generation

BBIPED platform exploits reliable open-source technologies all-together with our own developments

Salome-Platform

Paraview Tool

SU2 Standford tool

BBIPED Roadmap

We plan to extend BBIPED capabilities to other domains:

Renewable energy (wind turbine)

Aeronautics

Water and heat management

New facilities are already under study Multiphysics

Proper Orthogonal Decomposition (POD) and Genetic Algorithms (GA) for optimization

New turbulent models

Medical Applications

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Acknowledgement

BBIPED platform was developed within the project “Development of an efficient, flexible and innovative CFD computational Platform to optimally simulate and design industrial products and processes”, (BFA/DFB-6/12/TK2012/00020) funded by

Speciall thanks to our collaborator in this project:

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Thank you for your attention!Any question?

More info: www.bcamath.org/software/bbiped