HVAC Simulation for Electric Vehicles

29 April 2021  |  8:30 a.m.  CEST  |  Virtual Live Event


Electric vehicles (EV) are becoming increasingly popular due to their low to no emissions as well as their superior energy efficiency and driving performance. However, with electric vehicles we have to face special challenges in terms of thermal comfort in the passengers cabin. In conventional vehicles, the internal combustion engine (ICE) generates the dominant noise. In electric vehicles, the engine noise is eliminated and the heating, ventilation and air-conditioning (HVAC) unit noise becomes more prominent. This forces engineers to work quite a lot on HVAC unit noise reduction.

Energy management plays a central role in optimizing the driving range of EVs. Due to the large high-voltage storage in electric vehicles, more and more electric auxiliary drives are becoming part of the vehicle concept to improve efficiency, performance and comfort. HVAC systems are the largest auxiliary power consumers in electric vehicles.

The ICE in conventional vehicles also serves as a heat source to increase the temperature in the passenger cabin in cold weather. EV’s need a heater which place a further load on the HV battery as central energy unit. By using variable-speed drives for compressors or fans, energy efficiency can be improved without having to compromise on the thermal comfort in the passenger cabin. Further efficiency improvements can be achieved, for example, by implementing efficient heat pump systems in addition to air conditioning (A/C). All in all, the requirements are complex and engineers need smart development tools to meet the product requirements.

Different simulation methods like Computational Fluid Dynamics (CFD) can be used to efficiently and effectively achieve target comfort inside the cabin. Our simpulse day will give an overview of scientific approaches, latest methods and different software applications as well as best-practices and industry-driven use cases. According to the objectives of the asc(s association, representatives from science and industry are invited to participate in a software independent discussion forum for pre-competitive exchange and initiation of research projects.


Challenges, scientific approaches, best-practices and
industry-driven use cases for:

1D or high fidelity modelling and analysis of HVAC components

optimization of heating/cooling performance, energy efficiency and comfort

and co-simulation

flow and topology

evaluation of new HVAC technologies

result interpretation and visualization


8:30 - 9:00 a.m. CEST
Arrival of the Guests on the Online Platform and Virtual Face-to-face Live Networking

9:00 - 9:15 a.m. CEST
Introduction & Motivation
Alexander F. Walser | Automotive Solution Center for Simulation e.V.

9:15 - 9:40  a.m. CEST
KULI as a Simulation Tool to Understand and Optimize the Influence of HVAC Systems in an Overall Vehicle Model
Joshua Pöhl , Christian Rathberger | Magna Powertrain Engineering Center Steyr GmbH & Co KG

9:40 - 10:05 a.m. CEST
Q-HVAC - a Simulation Tool for Optimization of Energy Consumption of HVAC Systems in Electric Buses
Robert Tykocki-Crow | QuickerSim Ltd

10:05 - 10:30 a.m. CEST
On the Fusion of 3D and 1D Simulation for Virtualized HVAC and Cabin Comfort XiL Development – a Methodology
Nils Framke, Jan Boebel, Marek Lehocky | Gamma Technologies GmbH

10:30 - 11:00 a.m. CEST
Live Interactive Round Tables - Meet the Speakers

11:00 - 11:15 a.m. CEST 
Coffee Break

11:15 - 11:40 a.m. CEST
How 3D Modelling Decisions can Influence the Thermal Performance Predictions Within a Vehicle Cabin Environment
Charalampos Tsimis, Paul Marston  |  Applus+ IDIADA 

11:40 a.m. - 12:05 p.m. CEST
Advanced Methods to Predict HVAC Contribution to Noise Level and Sound Quality from CFD, Considering Component and System Levels Simulation
Clement Dendievel, Bhanu Gupta, Domenico Caridi | Ansys

12:05 - 12:30 p.m. CEST
Live Interactive Round Tables - Meet the Speakers

12:30  - 1:30 p.m.
Lunch Break

1:30 p.m. - 1:55 p.m. CEST
Range Prediction and Optimization of a Battery Electric Vehicle
Salim Chaker |  Engineering System International GmbH

1:55 a.m.  - 2:20 p.m. CEST
Multipoint Functionality and Robust Design for Adjoint Topology Optimisation
Thomas Schumacher, Engys Germany GmbH

2:20 - 2:40 p.m. CEST
Interactive Session | Industrial Challenges

2:40 - 3:00 p.m. CEST
Live Interactive Round Tables - Meet the Speakers

3:00 p.m. CEST


  • Decision Makers
  • Simulation Managers
  • R&D Engineers
  • Researchers

… with the focus on HVAC simulation in the automotive area.


  • gain stimulating impulses and informative insights into the latest methods, software tools and best practices from the perspective of scientists, software vendors and end users

  • discuss future challenges and solution approaches within an unique expert community 

  • network and collaborate with other experts to intesivate business relationships and start new research projects closing methodological gaps


simpulse day |  29 April 2021

free participation
for employees of member companies and institutions in the asc(s association


€ 45.-  for non-members 

all prices +VAT

The event language will be English.

Follow our invitation and secure your personal ticket now.


Automotive Solution Center for Simulation e.V.

Dipl.-Ing. Alexander F. Walser
Curiestraße 2 | 70563 Stuttgart | Germany
events@asc-s.de | +49 (0) 711 699659-10 | www.asc-s.de


Automotive Solution Center for Simulation e.V.  | Curiestraße 2 |  70563 Stuttgart |  Germany
image credits header / background © Adobe Stock (Gorodenkoff)