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Evaluation of Control Set Points for Dual Use Heater Core and Active Grille Shutter (AGS) Systems Using 1D CFD Vehicle Thermal Modeling



With increasing pressure to meet US CAFE fuel economy standards, various technologies and control strategies are being developed to actively manage the vehicle drag and engine thermal performance to squeeze out additional fuel economy performance for different types of vehicles. Many of these strategies don’t necessarily easily work together and the onus is on the vehicle integrators to analyze the interactions between systems and devise an active control system to maximize overall performance.

In this webinar, Sudhi Uppuluri of Computational Sciences Expert Group (CSEG), describes how a 1D system level vehicle level thermal model is used to evaluate dual use heater core technology (DUHC) and its control set point in relation to Active Grill Shutters (AGS) actuation and the engine thermostat set-points. The actuation set-points for DUHC, AGS and Thermostat are analyzed together and their interactions are explored for stable control of the engine operating temperature for efficiency. The stability of the combined system is analyzed and guidance is provided on individual set points to achieve performance while maximizing the durability and performance of the various sub-systems.

What You Will Learn

  • Developing 1D CFD vehicle thermal model for transient thermal analysis in Flowmaster software
  • Details of the dual use heater core technology
  • Evaluation of the control set-points of the DUHC, Active Grille Shutter (AGS) technology and thermostat  operation in relation to each other
  • Discussion on evaluating multi-system interactions for overall engine temperature control and fuel efficiency

About the Presenter

Presenter Image Sudhi Uppuluri

Sudhi Uppuluri is Principal Investigator at Computational Sciences Experts Group (CSEG). He has over 14 years of experience in the simulation industry. He worked as a consulting engineer and sales manager at Flowmaster USA for 8 years. He has various technical publications on related subjects in SAE and AIAA journals. Suhdi Uppuluri holds a Masters in Aerospace Engineering from the University of Illinois at Urbana-Champaign and a Certificate in Strategy and Innovation from the MIT Sloan School of business

Who Should Attend

  • Thermal management system engineers
  • Chief engineers for down sized-boosted engines
  • Vehicle integration teams responsible for trailer tow capacity and cooling airflow requirements
  • Powertrain cooling engineers
  • Powertrain controls engineers

Products Covered

Technical Requirements

What do I need to watch and hear this web seminar?

Mentor Graphics’ web seminars are delivered using Adobe Connect. You will be able to login to the seminar room 15 minutes prior to the start time on the day of the presentation. You can hear the audio using your computer’s speakers via VoIP (Voice over IP) and background music will play prior to the beginning of the presentation.

Detailed system requirements

Microsoft® Windows

  • Windows XP, Windows Vista, Windows 7, Windows 8
  • Microsoft Internet Explorer 7, 8, 9, 10; Mozilla Firefox; Google Chrome
  • Adobe® Flash® Player 10.3 or later
  • 1.4GHz Intel® Pentium® 4 or faster processor and 512MB of RAM

Mac OS X, 10.5, 10.6, 10.7.4, 10.8

  • Mozilla Firefox; Apple Safari; Google Chrome
  • Adobe Flash Player 10.3
  • 1.83GHz Intel Core™ Duo or faster processor and 512MB of RAM


  • Ubuntu 10.04, 11.04; Red Hat Enterprise Linux 6; OpenSuSE 11.3
  • Mozilla Firefox
  • Adobe Flash Player 10.3


  • Apple supported devices: iPad, iPad2, iPad3; iPhone 4 and 4 S, iPod touch (3rd generation minimum recommended)
  • Apple supported OS versions summary: iOS 4.3.x, 5.x, or 6.x (5.x or higher recommended)
  • Android supported devices: Samsung Galaxy Tab 2 (10.1), Samsung Galaxy Tab (10.1), ASUS Transformer, Samsung Galaxy Tab (7”) , Motorola Xoom, Motorola Xoom 2, Nexus 7
  • Android supported OS versions summary: 2.2 and higher
  • Android AIR Runtime required: 3.2 or higher

Additional requirements

  • Bandwidth: 512Kbps for participants, meeting attendees, and end users of Adobe Connect applications. Connection: DSL/cable (wired connection recommended) for Adobe Connect presenters, administrators, trainers, and event and meeting hosts.

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