Investigation of volute design with high/supersonic impeller exit Mach
Siemens Energy AB / Maskiningenjörsjobb / Finspång
2024-10-02
Visa alla maskiningenjörsjobb i Finspång,
Norrköping,
Linköping,
Vingåker,
Katrineholm eller i
hela Sverige Visa alla jobb hos Siemens Energy AB i Finspång,
Norrköping,
Örebro,
Västerås,
Filipstad eller i
hela Sverige Investigation of Volute Design with High/Supersonic Impeller Exit Mach
A Snapshot of Your Day
High-temperature heat pumps are emerging as a promising solution for district heating, especially when powered by green electricity. The increasing demand for these systems calls for the use of low global warming potential refrigerants such as R1234ze(E), R1234ze(Z), R1234yf, and natural refrigerants like Isobutane (R600a) and CO2. However, designing for high Mach numbers presents significant challenges in Computational Fluid Dynamics (CFD), particularly in accurately modelling the real gas behaviours of these refrigerants.
As a master's thesis student, you will join the compressor aerodynamics group. This thesis project focuses on the centrifugal compressor used in heat-pump applications. The aim is to explore the implementation of refrigerants in numerical tools, simulate and evaluate the performance of centrifugal compressors with radial diffusers and volutes at both design and off-design points, and develop a comprehensive CFD process. The study will concentrate on high Mach centrifugal compressor components capable of handling high pressure ratios using R600a (Isobutane) and/or R1234ze(E) as reference refrigerants. The primary objective is to parameterize the volute and investigate various numerical approaches using commercial CFD tools to capture flow physics from choke to stall for the entire stage, while examining the errors introduced by using mixing plane or frozen rotor approaches instead of full 360-degree simulations.
How You'll Make an Impact
Conduct a comprehensive literature review on the current state-of-the-art regarding volute design in centrifugal compressors.
Implement refrigerants R600a and/or R1234ze(E) in a commercial CFD tool.
Perform and evaluate flow simulations for centrifugal compressors with radial diffusers and volutes at both design and off-design points.
Conduct a parametric study to understand the impact of different volute designs.
Focus on capturing flow physics from choke to stall for the entire stage.
Investigate the use of periodic boundary conditions for non-axisymmetric downstream components.
Compare the accuracy of mixing plane and frozen rotor approaches against full 360-degree simulations.
Develop an automatic or semi-automatic process for pre- to post-processing in CFD simulations for industrial use.
Normalize the results to ensure confidentiality while maintaining the integrity of the data.
What You Bring
M.Sc. student with mechanical engineering, aerospace engineering, engineering physics or similar.
Experience and interests in using CFD tools, e.g., CFX, STAR-CCM+, TRACE, or others.
Programming skills with Matlab and/or Python.
Ability to work independently, but not afraid of asking questions to move forward in your work.
Is structured and communicates well.
Can find own ways and solutions to challenges and problems.
About the Team
Within the R&D department, the compressor aerodynamics group consists of specialists with deep expertise in both theoretical and practical aspects of compressor design and performance. The team is dedicated to pushing the boundaries of compressor technology and innovation.
Our Gas Services division offers Low-emission power generation through service and decarbonization. Zero or low emission power generation and all gas turbines under one roof, steam turbines and generators. Decarbonization opportunities through service offerings, modernization, and digitalization of the fleet.
We can offer you employment benefits such as: reduction of working hours, advance vacation, health care allowance and an eventual possibility to a flexible working place.
Who is Siemens Energy?
At Siemens Energy, we are more than just an energy technology company. We meet the growing energy demand across 90+ countries while ensuring our climate is protected. With more than 99,000 dedicated employees, we not only generate electricity for over 16% of the global community, but we're also using our technology to help protect people and the environment.
Our global team is committed to making sustainable, reliable, and affordable energy a reality by pushing the boundaries of what is possible. We uphold a 150-year legacy of innovation that encourages our search for people who will support our focus on decarbonization, new technologies, and energy transformation.
Find out how you can make a difference at Siemens Energy:
https://www.siemens-energy.com/employeevideo Our Commitment to Diversity
Lucky for us, we are not all the same. Through diversity, we generate power. We run on inclusion and our combined creative energy is fueled by over 130 nationalities. Siemens Energy celebrates character - no matter what ethnic background, gender, age, religion, identity, or disability. We energize society, all of society, and we do not discriminate based on our differences.
Application
Don't hesitate - apply via
https://jobs.siemens-energy.com/en_US/jobs, id nr 264481 no later than 2024-11-01.
Ongoing selection is applied, the role might be filled before last application date.
For questions about the role, please contact the recruiting manager Henrik Pilvinge on
henrik.pilvinge@siemens-energy.com.
For questions about the recruitment process please contact the responsible recruiter Ermina Imamovic on
ermina.imamovic.ext@siemens-energy.comWe refrain from all contact with staffing and recruitment companies, or advertising brokers.
Location: Finspång
Trade Union Representatives:
Anders Häll, Unionen, +46122-887514
Simon Von Eck...
Ersättning Fixed salary
Så ansöker du Sista dag att ansöka är 2024-11-01
Klicka på denna länk för att göra din ansökan Arbetsgivarens referens Arbetsgivarens referens för detta jobb är "264481".
Omfattning Detta är ett heltidsjobb.
Arbetsgivare Siemens Energy AB (org.nr 556606-6048)
Arbetsplats Siemens Energy
Jobbnummer 8932535