Master Thesis, 30 HP—Intake distortion synthesis using steady-state CFD dat at Saab

Linköping, Östergötland County, Sweden -

Full Time

Start Date

Immediate

Expiry Date

27 Dec, 25

Salary

0.0

Posted On

28 Sep, 25

Experience

0 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Fluid Mechanics, CFD, Programming, Mathematics, Numerical Methods, Machine Learning

Industry

electrical;Appliances;and Electronics Manufacturing

Description

Are you a student eager to apply your theoretical knowledge and fresh perspectives to real-world challenges? At Saab, we believe that innovation thrives on new ideas, and your master thesis project could be the spark that ignites our next technological breakthrough. Your role We recognise the immense value that students bring to our company. Your academic rigor, combined with your enthusiasm for cutting-edge technology, allows you to approach problems with a unique and insightful lens. At Saab, you'll have the opportunity to collaborate with experienced engineers and specialists, gaining invaluable practical experience while making a tangible contribution to our growth and development. Background The flow in an intake upstream of the compressor should optimally be uniform. However, the flow is generally non-uniform and some flight conditions cause higher levels of non-uniform flow. The pressure distribution immediately upstream of the compressor may in such cases be highly unevenly distributed, this is also known as intake distortion. Distortion affects engine performance and increases the risk of compressor stall. Hence, it is essential to predict the distortion within the entire operational envelope of the engine in order to assess the risk of compressor stall. Steady-state distortion can be predicted with steady-state computational fluid dynamics (CFD) simulations; however, the time fluctuating distortion in highly turbulent flow can be far greater than indicated by a steady-state simulation. Dynamic intake distortion can be determined through wind tunnel tests and/or time-accurate CFD simulations. However, these options are both highly expensive and time consuming. A faster and less expensive method to estimate dynamic intake distortion is warranted, especially for conceptual studies. One such method is to utilise steady-state CFD pressure data together with an estimated fluctuating pressure component to form a synthesised dynamic pressure from which the dynamic distortion can be determined. Project description The thesis project aims to explore methodology for estimation of dynamic intake distortion synthesis for conceptual studies. It includes theoretical studies and literature survey, practical implementation of theory and evaluation of the methodology. Wind tunnel data of an intake design are available for validation and verification. CFD simulations matching the wind tunnel conditions will be performed within the project. The relationship between steady-state CFD turbulence quantities and measured quantities is not obvious. Can the traditional method be enhanced? Perhaps through an enhanced mathematical model or with the help of machine learning. We encourage you, bases on your skills, to find the best solution. The Master thesis will be performed at the Propulsion System department at Saab Aeronautics. The department is responsible for air intake design in our military fighters. You will receive support from supervisors with extensive experience in the field, ensuring you have the best conditions for success. Your profile You are currently a master’s student in engineering. You have skills in at least one of the following topics: fluid mechanics, CFD, programming, mathematics, numerical methods, machine learning. We provide the support and guidance you need to translate your theoretical knowledge into practical solutions. Join us and become a driving force behind Saab's technological advancements! This position requires that you pass a security vetting based on the current regulations around/of security protection. For positions requiring security clearance additional obligations on citizenship may apply. What you will be a part of Explore a wealth of possibilities. Take on challenges, create smart inventions, and grow beyond. This is a place for curious minds, brave pioneers, and everyone in between. Together, we achieve the extraordinary, each bringing our unique perspectives. Your part matters. Saab is a leading defence and security company with an enduring mission, to help nations keep their people and society safe. Empowered by its 25,500 talented people, Saab constantly pushes the boundaries of technology to create a safer and more sustainable world. Saab designs, manufactures and maintains advanced systems in aeronautics, weapons, command and control, sensors and underwater systems. Saab is headquartered in Sweden. It has major operations all over the world and is part of the domestic defence capability of several nations. Read more about us here. Last application day 30-10-2025 Contact information Nor Al-Mosawi, Manager 073-446 5579 e-mail: nor.al-mosawi@saabgroup.com Stefan Nilsson, Master Thesis Supervisor 073-418 8360 e-mail: stefan.nilsson1@saabgroup.com At Saab, we constantly look ahead and push boundaries for what is considered technically possible. We collaborate with colleagues around the world who all share our challenge – to make the world a safer place. Saab is a global defense and security company operating in the fields of air, land and naval defense, civil security and commercial aeronautics. We number approximately 22,000 employees and have operations on all continents. Technologically we are leaders in many areas, and one-fifth of our earnings are spent on research and development. Saab is a company where we see diversity as an asset and offer unlimited opportunities for advancing in your career. We are also a company that respects each person’s needs and encourage employees to lead a balanced, rewarding life beyond work. Saab values diversity and is an Equal Opportunity/Affirmative Action employer. All qualified individuals are encouraged to apply and will be considered for employment without regard to race, color, religion, national origin, sex (including pregnancy), sexual orientation, gender identity, age, veteran, or disability status.

Responsibilities

The thesis project aims to explore methodology for estimation of dynamic intake distortion synthesis for conceptual studies. It includes theoretical studies, practical implementation of theory, and evaluation of the methodology.