Evaluation of 1D and 3D CFD Methods for Exhaust Backpressure Simulations (2881)

Evaluation of 1D and 3D CFD Methods for Exhaust Backpressure Simulations (2881)

Target group: Applied Mechanics

At Research and Development you will be a key contributor to the next generation outstanding luxury cars from Volvo. Together with other engineers around the world, you and your team will create innovative human-centric car technology that makes life less complicated and more enjoyable for people. Are you interested in design and connected car technology? Do you share our passion for people, the environment and our urge to create a superior driving experience? Research and Development is the place for you to prosper.

<span lang="EN-US" style="line-height: 115%; mso-bidi-font-family: "Times New Roman"; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-ansi-language: EN-US; mso-bidi-language: AR-SA;">Thesis work: Evaluation of 1D and 3D CFD Methods for Exhaust Backpressure Simulations

This thesis work will be carried out within the Exhaust System Group as well as within the Engine CAE-Fluids Group, both which are parts of VCC’s Vehicle Propulsion organization. The Exhaust System group develops and optimizes the exhaust system with respect to engine performance, NVH (Noise, Vibration, and Harshness), durability, etc. The Engine CAE-Fluids group performs and develops CFD methods for all engine related functions.

Background
Exhaust backpressure is an important parameter to consider in development of exhaust systems. All parts of the exhaust system contribute to backpressure, such as straight pipes, bent pipes, and mufflers. Backpressure can be measured e.g. in a flow rig or an engine dyno bench. However, building physical prototypes for testing are often very costly and the lead times from order to delivery date are long. Simulations are therefore an efficient alternative to physical testing given that they provide results with reasonable accuracy. 3D CFD can predict fluid fields at high accuracy, but it demands significant amount of computational power. 1D CFD is a less accurate alterative but it requires less computational resources.

The goal with the master’s thesis is to evaluate 1D and 3D CFD methods and investigate the accuracy in different parts of the exhaust system.

Scope
The master’s thesis includes a literature study of previous work. Simulation of the exhaust system will then be performed with 1D and 3D CFD as well as validation of the results with physical flow bench measurements.

The student will work in the Exhaust System group together with the Engine CAE-Fluids group.

Profile
• We are looking for a highly motivated student that have a genuine interest in cars, calculations and product development.
• Preferably the student has a background with courses in Computational Fluid Dynamics (CFD) and multiphase flow.
• The student should ideally be familiar with 1D or 3D CFD software such as GT-SUITE, STAR-CCM+, ANSYS Fluent, OpenFOAM.
• Communication skills are important since information will be needed from several different parts of the company.

Duration
• Period: one semester, 30 ECTS points and will be performed at Volvo Cars
• Starting date: January 2018
• Number of students: suitable for one student.

Application
• Attach your resume and cover letter stating your interests within the given area and your thoughts and credentials.
• Please note that applications arriving later then the last application date will not be taken in consideration.
• Selection will be ongoing during the application period.

In case of questions, please contact the supervisors at Volvo Cars:
Anders Lind, CAE Engineer at Exhaust System
, +46 72 888 9391
Maria Dybeck, CAE Engineer at Engine CAE-Fluids
, +46 31 325 5489

Apply at

We want your application as soon as possible, but no later than 2017-11-24. Applications will be reviewed continuously.

About Volvo Car Group

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