Modeling in-cylinder simulations has been a complex and time-consuming task. ANSYS provides easy and efficient tool to automate: geometry decomposition, mesh generation, solver setup for cold flow simulation and report generation. ANSYS also provides wide variety of spray and combustion models to capture physics of Internal Combustion Engines accurately.

ANSYS Offerings for IC Engines Simulations

Features for Spray Simulation Thermal Analysis of Diesel Engine

WB-ICEngine SYSTEM

• Single window to specify all IC engine specific parameters

• Flexible to accommodate

• User requirements at Geometry decomposition and Meshing level

• User journal files to customize CFD Simulation

Work Flow Setup Geometry Decomposition

Postprocessing Mesh Generation

Report Creation

•WB ICE System is a new Analysis System to

streamlines IC cold flow simulation

• Automated Geometry Decomposition based on

user’s requirement

• Automated mesh generation

• Panel to easily modify mesh refinement

• IC engine specific post processing tools

• Monitor for swirl and tumble , etc.

• Creates report in html format

• Content of report can be further customized

• ANSYS offerings for spray simulations:-

• Break-up models: -

KH-RT

SSD

• IC specific evaporation laws:-

Convection/Diffusion controlled Model

Diffusion Controlled Model

Results of Spray Calibration Study

Comparison of Spray Shape

Comparison of spray penetration predicted by SSD and KH-RT break-up model with experimental data

Experimental local velocity distributions and distribution predicted by SSD breakup model

Mesh Dependence Study Time Step size Dependence Study

Coupled Simulations for Engine Cooling Analysis

Temperature profile on the firedeck

Steady state conjugate heat transfer of cylinder head

Transient in-cylinder combustion simulation in diesel engine

Iterative Process

Time-averaged Heat Flux profile on cylinder head

Diesel Spray Behavior

Results

Clock time for different combustion models to complete one combustion cycle on AMD 64 bit processors with 2.8 GHz clock-speed, using 16 nodes