FIRE_ESE_Diesel

AVL FIRE ESE Diesel
Advanced Simulation Technologies
TM001 10/02
AVL List GmbH
Advanced Simulation Technologies ast@https://www.360docs.net/doc/3c15639378.html,
AVL FIRE ESE Diesel
2007-8-21 | Page 1

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
ESE Diesel
ESE Diesel
handles standard Diesel simulation tasks (spray adjustment and segment model simulation) geometrical model description based on 2D curves automated two- and threedimensional grid generation
TM001 10/02
default 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 generation
AVL FIRE ESE Diesel 2007-8-21 | Page 2

AVL FIRE
ESE Diesel
General data Sketcher Simulation parameter ESE Diesel Simulation Analyzer Report generator Advanced Simulation Technologies
ESE Diesel
General 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 models
TM001 10/02
Simulation: calculation wizard starting, stopping and re-starting of simulations Analyzer: IC engine specific result analysis functions Report generator: automated standard report creation
AVL FIRE ESE Diesel
2007-8-21 | Page 3

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
Concept
linear, GUI guided workflow for standard Diesel simulation tasks generation of computational grids setting up and performing a simulation analyzing and documenting TM001 10/02 results
AVL FIRE ESE Diesel
2007-8-21 | Page 4

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
Simulation tasks
Overview Spray adjustment Engine segment simulation standard based on BOOST data BOOST coupled simulation10/02 TM001
BOOST: 1D thermodynamic cycle simulation software
AVL FIRE ESE Diesel 2007-8-21 | Page 5

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
Simulation tasks
Spray 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 generation
AVL FIRE ESE Diesel
2007-8-21 | Page 6

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
Simulation tasks
Standard engine segment parameterized curves for geometrical description of piston and injector tip automated 2D / 3D grid generation spray aligned grid local grid refinement
TM001 10/02
bowl and injector offset piston displacement function with stroke deflection pre-defined simulation control file problem specific result analysis automated report generation
AVL FIRE ESE Diesel
2007-8-21 | Page 7

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
Simulation tasks
BOOST based engine segment BOOST model file provides main engine data valve timing initial and boundary conditions → ensures consistent input data 10/02 TM001
AVL FIRE ESE Diesel
2007-8-21 | Page 8

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
Simulation tasks
BOOST 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 coupling
Test phase still ongoing!
AVL FIRE ESE Diesel 2007-8-21 | Page 9

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
→ Standard engine segment
General engine data specification of main geometrical data specification of crank train
TM001 10/02
AVL FIRE ESE Diesel
2007-8-21 | Page 10

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
→ Standard engine segment
Sketcher import and manipulation of discrete and parameterized templates and user-defined piston and injector shapes selection of grid type and grid topology
TM001 10/02
extended selection definition
AVL FIRE ESE Diesel
2007-8-21 | Page 11

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
→ Standard engine segment
Mesher generation of a complete set of grids required for compression and expansion phase handling of: selection definition local grid refinement
TM001 10/02
injector and piston bowl offset adjustment of compression ratio grid boundary layer
AVL FIRE ESE Diesel
2007-8-21 | Page 12

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
→ Standard engine segment
Simulation parameter setup of initial and boundary conditions default solver steering file ensuring save and accurate simulation based on AVL’s best practice know how full access to all relevant modules as: TM001 10/02 species transport spray combustion user functions MPI …
AVL FIRE ESE Diesel 2007-8-21 | Page 13

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
→ Standard engine segment
Analyzer (I) visualization and analysis of fluid flow simulation results friction modeling engine specific results database for result archiving
TM001 10/02
AVL FIRE ESE Diesel
2007-8-21 | Page 14

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
→ Standard engine segment
Analyzer (II) visualization and analysis of fluid flow simulation results friction modeling engine specific results database for result archiving
TM001 10/02
AVL FIRE ESE Diesel
2007-8-21 | Page 15

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
→ Standard engine segment
Analyzer (III) visualization and analysis of fluid flow simulation results friction modeling engine specific results database for result archiving
TM001 10/02
AVL FIRE ESE Diesel
2007-8-21 | Page 16

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
→ Standard engine segment
Analyzer (IV) visualization and analysis of fluid flow simulation results friction modeling engine specific results database for result archiving
TM001 10/02
AVL FIRE ESE Diesel
2007-8-21 | Page 17

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
→ Standard engine segment
Report generator generation of configurable standard report in html-format engine data grid statistics engine specific output
TM001 10/02
images
AVL FIRE ESE Diesel
2007-8-21 | Page 18

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
Engine Simulation Environment Diesel
Parameter optimization
Workflow coupling of ESE Diesel with optimization software to find optimum geometrical and / or non-geometrical parameter settings
Modelling Solver GUI
set geometrical parameter and create computational model set non-geometrical model parameter
CFD Solver
create ese.out
TM001 10/02
Optimization target(s) achieved? define new new input files: - ese_solver.in - ese_model.in
no yes
AVL FIRE ESE Diesel
2007-8-21 | Page 19

AVL FIRE
ESE Diesel
Advanced Simulation Technologies
Parameter optimization
Example minimization of: BSFC emissions parameter variation of: piston bowl diameter piston bowl depth piston bowl center depth spray angle swirl start of injection initial mass of exhaust gas
AVL FIRE ESE Diesel 2007-8-21 | Page 20
TM001 10/02