SCILAB WORKSHOP Workflow automation SCILAB TEAM 17th, October 2019 www.esi-group.com 1 Copyright © ESICopyright Group, 2017. © ESI All Group, rights reserved.2017. All rights reserved. Agenda 1. OpenFOAM case set-up with SCILAB Read/Write text files 2. OpenFOAM simulation automation with SCILAB Run utilities from SCILAB console 3. OpenFOAM results post-processing with SCILAB 4. Advanced post-processing Optimization example 5. Graphical User Interface (GUI) design for simulation application www.esi-group.com 2 Copyright © ESI Group, 2017. All rights reserved. OpenFOAM case set-up Read/Write text files www.esi-group.com 3 Copyright © ESI Group, 2017. All rights reserved. 1. REMINDER: OpenFOAM case structure System directory Simulation parameters Constant directory Mesh and flow properties Time directories Initial conditions and results www.esi-group.com 4 Copyright © ESI Group, 2017. All rights reserved. 2. Basics for string manipulation in SCILAB • Simple ‘ or double quote ’’ >> ‘Make simulation rocks!’ • Concatenate with + >> ‘SCILAB’ + ‘ & ‘ + ‘OpenFOAM’ • Locate substring strstr, find • Handle part of strings strsplit, strsubst • String conversion into double evstr • Handle text file mopen, mgetl, mfprintf, mclose, write www.esi-group.com 5 Copyright © ESI Group, 2017. All rights reserved. 3. Example: Speed and angle of attack change www.esi-group.com 6 Copyright © ESI Group, 2017. All rights reserved. 4. Example: Mesh change PARSEC parametrization Screening experiment rle, xup, zte, bte www.esi-group.com 7 Copyright © ESI Group, 2017. All rights reserved. 4. Example: Mesh change Header www.esi-group.com 8 Copyright © ESI Group, 2017. All rights reserved. 4. Example: Mesh change Content www.esi-group.com 9 Copyright © ESI Group, 2017. All rights reserved. 4. Example: Mesh change Generated file & mesh www.esi-group.com 10 Copyright © ESI Group, 2017. All rights reserved. Simulation automation Run OpenFOAM utilities from SCILAB www.esi-group.com 11 Copyright © ESI Group, 2017. All rights reserved. 1. REMINDER: OpenFOAM utilities Access utilities from command line www.esi-group.com 12 Copyright © ESI Group, 2017. All rights reserved. 2. Basics for utilities manipulation in SCILAB Windows, Linux or MacOS command execution unix_g, unix_s, unix_w, unix_x www.esi-group.com 13 Copyright © ESI Group, 2017. All rights reserved. 3. Example: Generate cases for each run of DoE 1. Clean case 2. Generate new mesh 3. Run simulation www.esi-group.com 14 Copyright © ESI Group, 2017. All rights reserved. Results post-processing Field and time serie analysis www.esi-group.com 15 Copyright © ESI Group, 2017. All rights reserved. 1. REMINDER: OpenFOAM results www.esi-group.com 16 Copyright © ESI Group, 2017. All rights reserved. 2. Basics for results manipulation in SCILAB csvRead • Range definition • Automatic conversion into doubles • Header remove evstr String conversion into double matrix www.esi-group.com 17 Copyright © ESI Group, 2017. All rights reserved. Advanced post-processing Airfoil shape optimization www.esi-group.com 18 Copyright © ESI Group, 2017. All rights reserved. Airfoil shape optimization www.esi-group.com 19 Copyright © ESI Group, 2017. All rights reserved. 1. Optimization workflow Parametrization Simulation Post Process Cost Function & Case setup Cost functions • Maximize lift ~ min 10 − 퐶퐿 • Minimize drag (CD) ~ min 퐶퐷 www.esi-group.com 20 Copyright © ESI Group, 2017. All rights reserved. 2. Optimization cost function 1/ Clean case 2/ Generate new mesh 3/ Run case 4/ Extract results 5/ Build cost function www.esi-group.com 21 Copyright © ESI Group, 2017. All rights reserved. 3. Optimization set-up Genetic Algorithm – Multi-Objective optimization – 20 iterations www.esi-group.com 22 Copyright © ESI Group, 2017. All rights reserved. 4. Design space exploration – Toward optimum www.esi-group.com 23 Copyright © ESI Group, 2017. All rights reserved. GUI design Simulation application www.esi-group.com 24 Copyright © ESI Group, 2017. All rights reserved. 1. SCILAB function for GUI design – uicontrol() Figure properties Uicontrol main properties: • Style • Position • Value • Enable • String • Tag • Callback www.esi-group.com 25 Copyright © ESI Group, 2017. All rights reserved. 2. Locate case - GUI Locate Case Components • 1 figure • 1 menu • 1 callback www.esi-group.com 26 Copyright © ESI Group, 2017. All rights reserved. 3. Locate case - Code www.esi-group.com 27 Copyright © ESI Group, 2017. All rights reserved. 4. Simulation & Optimization set-up - GUI Simulation set-up Optimization set-up • Change Speed • Change max number of iteration • Change AoA • Run optimization www.esi-group.com 28 Copyright © ESI Group, 2017. All rights reserved. 5. Simulation set-up code Graphical component Callback www.esi-group.com 29 Copyright © ESI Group, 2017. All rights reserved..