FIRE_ESE_Diesel

AVL FIRE ESE DieselAdvanced Simulation TechnologiesTM001 10/02AVL List GmbHAdvanced Simulation Technologies ast@AVL FIRE ESE Diesel2007-8-21 | Page 1AVL FIREESE DieselAdvanced Simulation TechnologiesESE DieselESE Dieselhandles standard Diesel simulation tasks (spray adjustment and segment model simulation) geometrical model description based on 2D curves automated two- and threedimensional grid generationTM001 10/02default simulation control files for all applications full access to all physical and chemical models of AVL FIRE IC engine specific result analysis and result database automated report generationAVL FIRE ESE Diesel 2007-8-21 | Page 2AVL FIREESE DieselGeneral data Sketcher Simulation parameter ESE Diesel Simulation Analyzer Report generator Advanced Simulation TechnologiesESE DieselGeneral data: main engine parameter, such as name, bore, stroke, cranktrain dimensions, … Sketcher: piston geometry definition Simulation parameter: setup of initial and boundary condition, numerical, physical and chemical modelsTM001 10/02Simulation: calculation wizard starting, stopping and re-starting of simulations Analyzer: IC engine specific result analysis functions Report generator: automated standard report creationAVL FIRE ESE Diesel2007-8-21 | Page 3AVL FIREESE DieselAdvanced Simulation TechnologiesConceptlinear, GUI guided workflow for standard Diesel simulation tasks generation of computational grids setting up and performing a simulation analyzing and documenting TM001 10/02 resultsAVL FIRE ESE Diesel2007-8-21 | Page 4AVL FIREESE DieselAdvanced Simulation TechnologiesSimulation tasksOverview Spray adjustment Engine segment simulation standard based on BOOST data BOOST coupled simulation10/02 TM001BOOST: 1D thermodynamic cycle simulation softwareAVL FIRE ESE Diesel 2007-8-21 | Page 5AVL FIREESE DieselAdvanced Simulation TechnologiesSimulation tasksSpray adjustment general injector description spray box sketching 2D / 3D grid generation pre-defined simulation control file problem specific result analysis 10/02 TM001 automated report generationAVL FIRE ESE Diesel2007-8-21 | Page 6AVL FIREESE DieselAdvanced Simulation TechnologiesSimulation tasksStandard engine segment parameterized curves for geometrical description of piston and injector tip automated 2D / 3D grid generation spray aligned grid local grid refinementTM001 10/02bowl and injector offset piston displacement function with stroke deflection pre-defined simulation control file problem specific result analysis automated report generationAVL FIRE ESE Diesel2007-8-21 | Page 7AVL FIREESE DieselAdvanced Simulation TechnologiesSimulation tasksBOOST based engine segment BOOST model file provides main engine data valve timing initial and boundary conditions → ensures consistent input data 10/02 TM001AVL FIRE ESE Diesel2007-8-21 | Page 8AVL FIREESE DieselAdvanced Simulation TechnologiesSimulation tasksBOOST coupled engine segment BOOST model file provides engine main data BOOST simulation provides initial and boundary conditions at IVC between IVC and EVO ESE Diesel provides the in-cylinder pressure to TM001 10/02 BOOST → accurate initial conditions for FIRE simulation → improved spray / combustion modeling in BOOST (p, ROHR) available as HPC and MHPC couplingTest phase still ongoing!AVL FIRE ESE Diesel 2007-8-21 | Page 9AVL FIREESE DieselAdvanced Simulation Technologies→ Standard engine segmentGeneral engine data specification of main geometrical data specification of crank trainTM001 10/02AVL FIRE ESE Diesel2007-8-21 | Page 10TM00110/02A dvanced S imulation T echnologiesSketcherimport and manipulation of discrete and parameterized templates and user-defined piston and injector shapesselection of grid type and grid topologyextended selection definitionESE Diesel→Standard engine segmentTM00110/02A dvanced S imulation T echnologiesSimulation parametersetup of initial and boundary conditionsdefault solver steering file ensuring save and accurate simulation based on AVL’s best practice know howfull access to all relevant modules as:species transportspray combustion user functions MPI…ESE Diesel→Standard engine segmentTM00110/02A dvanced S imulation TechnologiesAnalyzer (I)visualization and analysis of fluid flowsimulation resultsfriction modeling engine specific resultsdatabase for result archivingESE Diesel→Standard engine segmentTM00110/02A dvancedS imulationTechnologiesESE DieselAnalyzer (II)visualization and analysis of fluid flow simulation results friction modeling engine specific resultsdatabase for result archiving→Standard engine segmentTM00110/02A dvancedS imulationTechnologiesESE DieselAnalyzer (III)visualization and analysis of fluid flow simulation results friction modeling engine specific resultsdatabase for result archiving→Standard engine segmentTM00110/02A dvancedS imulationTechnologiesESE DieselAnalyzer (IV)visualization and analysis of fluid flow simulation results friction modeling engine specific resultsdatabase for result archiving→Standard engine segmentTM00110/02A dvanced S imulation T echnologiesReport generatorgeneration of configurable standard report in html-formatengine datagrid statisticsengine specific outputimagesESE Diesel→Standard engine segmentTM00110/02A dvanced S imulation T echnologiesExampleminimization of:BSFCemissionsparameter variation of:piston bowl diameter piston bowl depthpiston bowl center depthspray angle swirlstart of injectioninitial mass of exhaust gasESE DieselParameter optimizationAVL FIREESE DieselAdvanced Simulation TechnologiesSummaryeasy to understand and to use maximum process reliability shortest possible turn-around-times expert advice regarding simulation parameters accuracy based on state-of-the art solver and highly developed TM001 10/02 physical and chemical models high flexibility due to parameterized geometry descriptions accessible for users of any level of experience in CFDAVL FIRE ESE Diesel2007-8-21 | Page 21AVL FIRE ESE DieselAdvanced Simulation TechnologiesTM001 10/02AVL List GmbHAdvanced Simulation Technologies ast@AVL FIRE ESE Diesel2007-8-21 | Page 22。