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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

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.

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

(3)

.

Background: Simulation Strategies 背景:模拟对策

Predict: Electric Aircraft

Validate & Troubleshoot: Thrust Reverser

Automate & Explore: ECS Components

Agenda

(4)

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

(5)

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

(6)

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

(7)

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

(8)

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

(9)

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

(10)

STAR-CCM+

Simcenter

Portfolio for Predictive Engineering Analytics: STAR-CCM+

Simcenter

旗下工程设计分析软件: STAR-CCM+

(11)

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

(12)

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

(13)

.

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

(14)

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

(15)

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

(16)

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

(17)

.

Background: Simulation Strategies

Predict: Electric Aircraft 预测:电控飞行器

Validate & Troubleshoot: Thrust Reverser

Automate & Explore: ECS Components

Agenda

(18)

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

(19)

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

(20)

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

(21)

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

(22)

.

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

(23)

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

(24)

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

(25)

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

(26)

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

(27)

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

(28)

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

(29)

Assess

Airbus: Static Air Mixer in ECS Design 空客:空气混合器设计探索

Explore

Build Test

(30)

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

(31)

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

(32)

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

(33)

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

(34)

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

參考文獻

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