View
3
Download
0
Category
Preview:
Citation preview
Optimization of the Piston cooling oil jet using
Particleworks with modeFRONTIER
David Percival – EnginSoft UK
Rod Giles – Royal Enfield
www.caeconference.com
Royal Enfield - History
Longest established motorcycle company with continuous
production - since 1901
Redditch, UK 1901 - 1970
Chennai, India 1955 - present
Part of Eicher Group since 1994
Fastest growing motorcycle brand
30,000 units in 2005
720,000 units in 2018-19
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 2
www.caeconference.com
Background
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 3
LS410
Himalayan
Royal Enfield is working on the LS410 engine for the
Himalayan bike
Adequate cooling of the Piston is essential in Engine
design
A poorly cooled Piston will warp over time affecting
the lifetime and reliability of the bike
www.caeconference.com
Problem
No way of calculating oil distribution or cooing effect
Rely on physical testing and hardness analysis
Inaccurate results – poor reliability
Increases time to Market
Decreases profits
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 4
www.caeconference.com 2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 5
“How can we be sure the
piston will not overheat
and warp?”
www.caeconference.com 2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 6
Initial process
www.caeconference.com
Initial Simulation
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 7
CAD Model Build Simulation
www.caeconference.com 2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 8
Camera’s motion
linked to Piston
motion
Results - Distribution
www.caeconference.com
Results – HTC Mapping
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 9
www.caeconference.com
Drainage Flowrate
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 10
Drainage
holes
Draining
flowrate < 5%
of total flowrate
Probes
www.caeconference.com
Drainage Flowrate
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 11
Average flowrate = 2.4% of
total flowrate
www.caeconference.com
Initial project - Conclusions
Using Particleworks we are able:
Calculate the HTC distribution of the oil jet
Calculate the flowrate of oil draining out of the piston to the
cylinder
This allows Royal Enfield to identify issues during the
design process
Saving time and money during physical testing and prototypes
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 12
www.caeconference.com
ADDED VALUE PROJECT
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 13
www.caeconference.com
Simulation Led Design
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 14
www.caeconference.com
Particleworks - modeFrontier A Particleworks API was created by EnginSoft
UK
The node introspects the Particleworks model
and finds all parameters we can vary
Parameters are dragged into the GUI and
modeFRONTIER modifies the model and
launches pre-processing, solver and post-
processing
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 15
www.caeconference.com
Simulation time reduction Mappings averaged over an entire cycle are
identical throughout simulation
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 16
Averaged from 0.2-0.24s
(8 cycles)
Averaged from 0.2-0.208s (1
cycle)
Averaged from 0.08-0.016s
(1 cycle)
www.caeconference.com
Simulation time reduction Mappings averaged over an entire cycle are
identical throughout simulation
Flowrate though drainage holes is uniform
throughout simulation
Hence we are able to shorten the length of
the simulation to only 2 cycles (0.016s)
Simulation time can be reduced to 15-20
minutes
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 17
www.caeconference.com
Design Modifications
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 18
-15° ≤ x Rotation ≤ 15°
-15° ≤ z Rotation ≤ 15°
1.2mm ≤ Nozzle diameter ≤ 2mm
www.caeconference.com
Workflow
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 19
Local
Local
Cluster
www.caeconference.com
Results
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 20
Rot X Rot Z Dia Avg HTC Num > 0 Flowrate
-6.1° -8.1° 1.906 826.27 658581 4%
Rot X Rot Z Dia Avg HTC Num > 0 Flowrate
-9.8° -15° 1.953 827.59 637548 2.6%
Rot X Rot Z Dia Avg HTC Num > 0 Flowrate
0° 0° 1.2 812.93 644866 2.4%
+1.80%
+2.13% +1.64%
-1.13%
www.caeconference.com
Ongoing work
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 21
www.caeconference.com
THANK YOU FOR YOUR ATTENTION
2019, 28 - 29 October 35th INTERNATIONAL CAE CONFERENCE AND EXHIBITION 22
Recommended