Increasing the Value of Simulation for Aircraft Design/ 提升航空产品模拟
的价值
Deryl Snyder, PhD
CD-adapco VP, Global Business Development
Realize innovation.
Restricted © Siemens AG 2017
.
Background: Simulation Strategies 背景:模拟对策
Predict: Electric Aircraft 预测:电控飞行器
Validate & Troubleshoot: Thrust Reverser 验证与除错:反推力系统
Automate & Explore: ECS Components 自动化与空间探索: ECS (环控)零部件
Agenda
.
Background: Simulation Strategies 背景:模拟对策
Predict: Electric Aircraft
Validate & Troubleshoot: Thrust Reverser
Automate & Explore: ECS Components
Agenda
Trends Driving Civil Aviation 推动民航发展的趋势
Increased Regulations/较严格的法规
Minimize environmental footprint/ 减少环境污染
Air Traffic & CO2 Emissions/ 空中交通与CO2排放
Trends Driving Civil Aviation 推动民航发展的趋势
Increased Regulations
Minimize environmental footprint
Growing Competition/ 竞争者增加
Differentiate & capture market share/ 分享市场
Single-Aisle Deliveries 2015-2034 /单通道客机供应商
36%
7%
5%
39%
5%
5% 3%
737Max 737NG
A320ceo Family A320neo Family C919
Cseries MC-21
Trends Driving Civil Aviation 推动民航发展的趋势
Increased Regulations
Minimize environmental footprint
Growing Competition
Differentiate & capture market share
Better Customer Experience/
更好的客户体验
Demand for Comfort and Convenience/ 舒适度与便 利性的需求
Customer Experience is the New
Battleground for Winning Customer Loyalty /客户体验是赢 取客户忠诚度的新战场
Trends Driving Civil Aviation 推动民航发展的趋势
Increased Regulations
Minimize environmental footprint
Growing Competition
Differentiate & capture market share
Better Customer Experience
Demand for Comfort and Convenience
Profitability Pressures/ 盈利压力
Reduced Operational and Maintenance Costs/
降低营运与维修费用
Trends Driving Civil Aviation 推动民航发展的趋势
Increased Regulations
Minimize environmental footprint
Growing Competition
Differentiate & capture market share
Better Customer Experience
Demand for Comfort and Convenience
Profitability Pressures
Reduced Operational and Maintenance Costs
Alternative Business Opportunities/
其他商机
Leverage Emerging Capabilities/ 借用新开发的技术
Trends Driving Civil Aviation 推动民航发展的趋势
Increased Regulations/ 较严格的法规
Minimize environmental footprint/ 减少环境污染
Growing Competition/ 竞争者增加
Differentiate & capture market share/ 分享市场
Better Customer Experience/ 更好的客户体验
Demand for Comfort and Convenience/ 舒适度与便 利性的需求
Profitability Pressures/ 盈利压力
Reduced Operational and Maintenance Costs /降 低营运与维修费用
Alternative Business Opportunities/
其他商机
Leverage Emerging Capabilities/ 借用新开发的技术
Driving Product Innovation Through Simulation / 通过模拟驱动产品创新
STAR-CCM+
Simcenter
™Portfolio for Predictive Engineering Analytics: STAR-CCM+
Simcenter
™旗下工程设计分析软件: STAR-CCM+
Simcenter
™Portfolio for Predictive Engineering Analytics STAR-CCM+/ Simcenter
™旗下工程设计分析软件STAR-CCM+
Fluid Dynamics Solid Mechanics
Fluid-structure Interaction Heat Transfer Particle Flows Reacting Flows
Multiphase Electrochemistry Electromagnetics
Acoustics Rheology
Multiphysics
Validate Troubleshoot Predict Automate Explore
Explore Digitally, Confirm Physically
Proactive Reactive
Redefining Simulation Strategy for Innovation 重新定义创新的模拟策略
Simulation Strategy
V alue
.
Background: Simulation Strategies
Predict: Electric Aircraft
Validate & Troubleshoot: Thrust Reverser 验证与除错:反推力系统
Automate & Explore: ECS Components
Agenda
Validate Troubleshoot
Explore Digitally, Confirm Physically
Proactive Reactive
Redefining Simulation Strategy for Innovation 重新定义创新的模拟策略
Simulation Strategy
V alue
UTAS: Thrust Reverser Performance Estimation/ UTAS 反推力系统性能预测
• Most modern turbofan engines
• Play important role in safety
• Important in certification
• Gross reverser effectiveness
• Area match through deployment
• No re-ingestion of the plume
• No adverse performance at cruise conditions
Normal Airflow Reversed Airflow Blocker Door
Vane Grid
Background Basic Requirements
State-of-the-Art Validate / Troubleshoot Strategy (使用最新技术的验证/ 除错策略)
UTAS: Thrust Reverser Performance Estimation/ UTAS 反推力系统性能预测
3D CFD Simulation of Full 360 Cascade
• Able to capture all relevant geometric details
• Fast, reliable, pipelined process
Pressure Coefficient
Axial Location
16 cascade boxes 1400 vane passages
Simulation results in
• Time and cost savings via less physical testing
• Reduced risk
.
Background: Simulation Strategies
Predict: Electric Aircraft 预测:电控飞行器
Validate & Troubleshoot: Thrust Reverser
Automate & Explore: ECS Components
Agenda
Validate Troubleshoot Predict
Explore Digitally, Confirm Physically
Proactive Reactive
Redefining Simulation Strategy for Innovation 重新定义创新的模拟策略
Simulation Strategy
V alue
Joby Aviation: Electric Aircraft Design 宙比飞行器公司:电控飞行器设计
Opens the design space
• Wealth of aircraft design knowledge: over 100 years
• Much of this knowledge is
irrelevant for electric propulsion
Electric propulsion scales
• Redundancy for VTOL safety
• Increased efficiency
• Reduced noise
Background Multiple Motors/Propellers
What to do at cruise?
• Fold into streamlined nacelles?
• Use as lifting surfaces?
• Remain in active propulsion?
Introduces Design Questions
Simulation is critical for good electric aircraft design/ 对于高质量的电控飞行器设计模拟是极为重要方法
Increased dynamic pressure across wingspan
• Increases maximum lift; allows better wing sizing for cruise efficiency Introduces many new design questions
• Propeller/propeller interactions
• How to distribute thrust?
Joby Aviation: Electric Aircraft Design 宙比飞行器公司:电控飞行器设计
Distributed Propulsion at Cruise/在巡航使用分布式推进器
Joby Aviation: Electric Aircraft Design 宙比飞行器公司:电控飞行器设计
Propeller interacts positively with wingtip vortex
• Increase in propulsive efficiency
• Reduction in cruise power
• Reduction in induced drag of the wing
Propeller creates additional winspan at cruise
• Increase aerodynamic performance
• Introduces design compromise at VTOL
• Propeller/wing interactions are not well-known Wingtip Cruise Propellers/ 带有翼尖巡航螺旋桨 Extend Effective Wingspan/可调整的翼展设计
Reliable predictions enable simulation-based design decisions/可靠的预测能实现模拟驱动设计
.
Background: Simulation Strategies
Predict: Electric Aircraft
Validate & Troubleshoot: Thrust Reverser
Automate & Explore: ECS Components 自动化与空间探索: ECS(环控)零部件
Agenda
Validate Troubleshoot Predict Automate Explore
Explore Digitally, Confirm Physically
Proactive Reactive
Redefining Simulation Strategy for Innovation 重新定义创新的模拟策略
V alue
What is Design Exploration Through Simulation?
通过模拟进行设计空间探索
Design Variant Number
Feasible Designs Infeasible Designs
What is Design Exploration Through Simulation?
通过模拟进行设计空间探索
Baseline Design
51% reduction in mass 25% cooling improvement
Improved Design
Airbus: Static Air Mixer in ECS Design 空客: 空气混合器设计探索
Aircraft Bleed-Air System Design
飞行器抽气系统设计
Goal: Redesign a mixing device to improve performance of air conditioning and wing ice protection systems
Mixed air to ice protection system Mixed air to air
conditioning system
Mixing device
Cold air in
Hot air in
Supply air at a given temperature and pressure (actively controlled) to the Air Conditioning and Wing Ice Protection systems.
Airbus: Static Air Mixer in ECS Design 空客: 空气混合器设计探索
Purpose of Bleed-Air System/ 抽气系统目的
Total pressure loss < 5kPa
Temperature difference at sensor < 12K
Static Mixer Design Goal/
空气混合器设计目标Airbus: Static Air Mixer in ECS Design 空客:空气混合器设计探索
• Chosen to give maximum design space flexibility
• Direct optimization does not require simplification of design space
• High variance in inlet temperature
• Limited mixing with baseline design:
• DP = 1kPa , DT = 153K
Concentric Mixer Concept/ 轴向混合器概念 Baseline Design/ 原始设计
baseline
Assess
Airbus: Static Air Mixer in ECS Design 空客:空气混合器设计探索
Explore
Build Test
Airbus: Static Air Mixer in ECS Design 空客:空气混合器设计
Temperature variation reduced by over 90%
Pressure drop constraint met DT = 13.7K DP = 4.9kPa
VALUE
EXPLORE DIGITALLY, CONFIRM PHYSICALLY PROACTIVE
REACTIVE
Validate Troubleshoot Predict
Conclusion: Better Designs, Faster 结论:更快发现更好的设计
SIMULATION PURPOSE
Automate Explore Aerospace companies are now using simulation-based exploration to
discover innovative design solutions/ 航空公司正在应用设计空间探索进行创新产品设计
Airbus: Static Air Mixer in ECS Design 空客:空气混合器设计
With STAR-CCM+, Airbus reduced exploration time from over 6 months to
less than 2 weeks.
使用STAR-CCM+, 空客空气混合器设计时间从6个月 减少到2周
This allows simulation-based design space exploration in a production
environment
在产品研发环境中已容许运用模拟进行设计空间探索
Conclusion: Better Designs, Faster 结论:更快发现更好的设计
STAR-CCM+
Multiphysics Platform
DARS Chemical Reactions
STAR-CD /es-ice In-Cylinder
Battery Design Studio Batteries
SPEED Electric Machines
ASSESS EXPLORE
TEST BUILD
Quickly Predict Real-World Performance and Find Better Designs
Flexible &
Robust Meshing
Efficient Parallel Computation
Workflow Automation Parametric
Models Multiphysics
Intelligent Design Exploration
Ensuring Success Through Knowledge Transfer and Expertise
Quickly Predict Real-World Performance and Find Better Designs
Making Design Exploration Possible
Innovative Products and Technologies
创新的软件功能与技术
Flexible License Models/ 灵活的授权使用模式
Individualized Customer Support/ 独特的客户支持系统
Contact Information 联系信息
Deryl Snyder
CD-adapco VP, Global Business Development
Siemens PLM Software / Simulation and Test Solutions 2101 Park Center Drive, Ste 290
Orlando, FL 32835 USA Phone: +1 407 517 5921 Mobile: +1 407 921 8514 E-mail:
deryl.snyder@siemens.com
siemens.com