Fangyuan Lou
Email: loufy@tsinghua.edu.cn
Education
Ph.D., 2016, Mechanical Engineering, Purdue University, West Lafayette, IN USA
Dissertation topic: A Study on Flow Development in an APU-Style Inlet and Its Effects on Centrifugal Compressor Performance
Advisory Committee: Nicole L. Key, Stuart J. Bolton, Jun Chen, and Tom Shih
B.S., 2009, Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, China
Research Experience
Associate Professor, 2023 to present, Institute for Aero Engine, Tsinghua University.
Assistant Professor, 2021 to 2023, Institute for Aero Engine, Tsinghua University.
Research Scientist, 2017 to 2021, Compressor Research Laboratory, Purdue Univ.
Research Advisor: Nicole L. Key
Co-principle investigator of GUIde VI program on compressor aeromechanics; Mentor master and PhD student.
Postdoctoral Research Associate, 2016 - 2017, Compressor Research Laboratory, Purdue Univ.
Research Advisor: Nicole L. Key
Coordinate test campaign on a high-speed single stage centrifugal compressor facility; Analytical modeling for centrifugal compressor preliminary design and optimization.
Graduate Research Assistant, 2010 - 2016, Compressor Research Laboratory, Purdue Univ.
Research Advisor: Nicole L. Key
Developed a single-stage centrifugal compressor research facility for both performance and aeromechanics research in collaboration with Honeywell Aerospace; Investigated flow distortion in an APU-style inlet using 3-component laser Doppler velocimetry; Studied the effect of flow distortion on the compressor performance and operability.
Teaching and Mentorship Experience
Instructor, Spring 2022-2025, 84150033: Experiments and Measurement Techniques of Aero Engines, Tsinghua University
Responsible for course development and lecturing for graduate students.
Mentor, Summer 2019, SURF Program, Purdue University
Mentored a junior undergraduate student from Rose-Hulman Institute of Technology on conceptual design of a all-electric 10-passenger aircraft for thin-haul applications.
Mentor, Spring 2018, ME 497: Optimization of a Transonic Impeller, Purdue University
Mentored a senior undergraduate student on a research project to optimize a transonic centrifugal impeller for performance improvements.
Instructor, Fall 2017, ME 433: Principles of Turbomachinery, Purdue University
Responsible for half of the course content on turbomachinery design principles for senior-level undergraduate students
Mentor, Spring 2017, ME 497: Mechanical Engineering Project, Purdue University
Mentored a senior undergraduate student on a research project to study the performance of a transonic impeller using CFD.
Graduate Mentor, Summer 2015, SURF Program, Purdue University
Mentored a junior undergraduate student in SURF program to develop a pressure calibration system.
Graduate Mentor, Fall 2014, 2015, E-Mentoring Program, Purdue University
Mentored first-year PhD students on topics including graduate courses, research, and relation with advisors.
Teaching Assistant, Spring 2012, ME 510: Gas Dynamics, Purdue University, Spring 2012
Assisted instructor in preparing lectures, graded homework assignments, and hold office hours for graduate-level course.
Professional Services
Associate Editor: 2018-present, Academic Journal of Engineering Sciences
Session Chair, 2023, Machine Learning, Control, and Characterization for Unsteady Flows, 68th ASME-IGTI Turbo Expo
Session Chair, 2022, Turbine Unsteady Flows, 67th ASME-IGTI Turbo Expo
Session Chair, 2022, Turbomachinery II, AIAA SciTech Forum
Session Chair, 2021, Centrifugal Compressor Design, 66th ASME-IGTI Turbo Expo
Session Chair, 2020, Combustor II, AIAA Power and Energy Forum
Session Chair, 2020, GTE-06 Tutorial Lecture, AIAA Power and Energy Forum
Session Chair, 2020, Compressor II, AIAA SciTech Forum
Session Chair, 2019, Compressor II, AIAA Propulsion and Energy Forum, AIAA P&E Forum
Session Chair, 2019, Microturbines: Compressors, 64th ASME-IGTI Turbo Expo
Session Chair, 2018, Microturbine Design and Development, 63rd ASME-IGTI Turbo Expo
Session Chair, 2017, Innovative Microturbine Design and Uses, 62nd ASME-IGTI Turbo Expo
Peer Reviewer: Aerospace, Aerospace Science and Technology, Applied Science, Energies, Journal of Engineering for Gas Turbine and Power, Journal of Fluids Engineering, Journal of Power and Energy, Journal of Mechanical Engineering Science, Journal of Turbomachinery, International Journal of Rotating Machines, and International Journal of Turbomachinery Propulsion and Power.
Patents
1. Application No. PCT/US20/40410 (16/918,054), “Compressor Stall Warning using Nonlinear Feature Extraction Algorithms”, Provisional filed July 8, 2019, patent issued Aug. 16, 2022.
2. Patent No. Us 11,199,437 B2 “Utilization of Fast-Response Pressure Measurements to Nonintrusively Monitor Blade Vibration in Axial Compressors”, Provisional filed June 25, 2019, patent filed April 9, 2020, patent issued, Dec. 14, 2021.
3. Application No. 17/461,753, “Probe Placement of Optimization in Gas Turbine Engines”, Provisional filed September 1, 2020, patent filed August 30, 2021.
4. Application No. 17/461,775: “Method for Reconstructing the Nonuniform Circumferential Flow in Gas Turbine Engines”, Provisional filed September 1, 2020, patent filed August 30, 2021.
Publications
Peer-Reviewed Journal Publications
1. Lou, F.*, 2024, “Resolving Nonuniform Flow in Gas Turbines, Challenges, Progress, and Moving Forward,” The Aeronautical Journal, Vol. 128, pp. 1325-1343.
2. Xu, J. and Lou, F.*, 2024, “A Rapid Method for Turbomachinery Aerodynamic Design and Optimization using Active Subspace,” Journal of the Global Power and Propulsion Society, Vol. 8, pp. 24-38.
3. Zhu, X., Zhou, K., Zheng X. Q., and Lou, F.*, 2023, “Lessons Learned Towards Estimating the High-Pressure Turbine Inlet Temperature Profile using Measurements Acquired at the HPT Exit,” ASME Journal of Engineering for Gas Turbines and Power, Vol. 145, p. 071011.
4. Lou, F.*, Matthews, D. R., Kormanik, N. J, and Key. N. L., 2023, “Accounting for Circumferential Flow Nonuniformity in a Multi-Stage Axial Compressor,” ASME Journal of Turbomachinery, Vol. 145, p. 071016.
5. Lou, F., Herbert, H.*, and Key. N. L., 2023, “Investigation of Surge in a Transonic Centrifugal Compressor with Vaned Diffuser - Part 1 Characterization of Surge Signature,” ASME Journal of Turbomachinery, Vol. 145, p. 051003. Best paper nomination.
6. Lou, F., Herbert, H.*, and Key. N. L., 2023, “Investigation of Surge in a Transonic Centrifugal Compressor with Vaned Diffuser - Part 2 Correlation with Steady Characteristics,” ASME Journal of Turbomachinery, Vol. 145, p. 051004. Best paper nomination.
7. Lou, F.*, 2022, “Approximating Combustor Exit Temperature Distribution Profiles using Spatially Undersampled Data,” ASME Journal of Engineering for Gas Turbines and Power, Vol. 144, p. 101018.
8. Lou, F.* and Key. N. L., 2022, “On Choosing the Optimal Impeller Exit Velocity Triangles in Preliminary Design,” ASME Journal of Turbomachinery, Vol. 144, p. 111011. Best paper nomination and shortlist candidate.
9. Adjei, R. A., Zheng, X. Q. *, Lou, F., and Ding C., 2022, “Multifidelity Optimization Under Uncertainty for Robust Design of a Micro-Turbofan Turbine Stage,” ASME Journal of Engineering for Gas Turbines and Power, Vol. 144, p. 101006.
10. Fuehne, M.*, Lou, F., and Key. N. L., 2022, “Experimental and Numerical Investigation of Tip Clearance Effects in a Transonic Centrifugal Compressor with a Vaned Diffuser,” AIAA Journal of Propulsion and Power, Vol. 38, pp. 378-388.
11. Lou, F.*, 2021, “A New Stall Warning Strategy for Gas Turbines,” ASME Global Gas Turbine News.
12. Kamdar. N., Lou, F.*, and Key. N. L., 2022, “Details of Shrouded Stator Hub Cavity Flow in a Multi-Stage Axial Compressor Part 2: Leakage Flow Characteristics in Stator Wells,” ASME Journal of Engineering for Gas Turbines and Power, Vo. 144, p. 011027.
13. Lou, F.* and Key. N. L., 2021, “Reconstructing Compressor Nonuniform Circumferential Flow from Spatially Under-sampled Data - Part 1: Methodology and Sensitivity Analysis,” Journal of Turbomachinery, Vol. 143, p. 081002. Best paper nomination and shortlist candidate.
14. Lou, F.*, Matthews, D. R., Kormanik, N. J, and Key. N. L., 2021, “Reconstructing Compressor Nonuniform Circumferential Flow from Spatially Under-sampled Data - Part 2: Practical Applications for Experiments,” Journal of Turbomachinery, Vol. 143, p. 081003. Best paper nomination and shortlist candidate.
15. Harrison, H.*, Lou, F., and Key. N. L., 2021, “Investigation of Slip Models for High-Speed Centrifugal Compressors,” Journal of Propulsion and Power, Vol. 37, pp. 3-12.
16. Lou, F.* and Key. N. L., 2020, “Compressor Stall Warning using Nonlinear Feature Extraction Algorithms,” Journal of Engineering for Gas Turbines and Power, Vol. 142, p. 121005.
17. Lou, F.* and Key. N. L., 2020 “Design Considerations for the Final-Stage Centrifugal Compressor in Aero Engines,” Journal of Propulsion and Power, Vol. 36, pp. 791-795.
18. Lou, F.*, Fabian, J. C., and Key. N. L., 2019 “Design Considerations for Tip Clearance Sensitivity of Centrifugal Compressors in Aero Engines,” Journal of Propulsion and Power, Vol. 35, pp.666-669.
19. Lou, F.*, Fabian, J. C., and Key. N. L, 2018 “Interpreting Aerodynamics of a Transonic Impeller from Static Pressure Measurements,” International Journal of Rotating Machinery, Article ID: 7281691.
20. Lou, F., Fabian, J. C., and Key. N. L.*, 2018 “A New Approach for Centrifugal Impeller Preliminary Design and Aero-thermal Analysis,” Journal of Turbomachinery, Vol. 140, p. 051001.
21. Lou, F.*, Fabian, J. C., and Key. N. L., 2017 “Stall Inception in a High-Speed Centrifugal Compressor during Speed Transients,” Journal of Turbomachinery, Vol. 139, p.121004. Best Paper Nomination.
22. Lou, F., Fabian, J. C., and Key. N. L.*, 2016, “Experimental Investigation of Flow Distortion in an Auxiliary-Power-Unit-Style Inlet System,” Journal of Propulsion and Power, Vol. 32, pp. 892-902.
23. Lou, F.*, Fabian, J. C., and Key. N. L., 2014, “The Effect of Gas Models on Compressor Efficiency Including Uncertainty,” Journal of Engineering for Gas Turbines and Power, Vol. 136, p. 012601.
24. Lou, F., Fleming, R., and Key, N. L.*, 2012, “Calculating High-Speed Centrifugal Compressor Performance from Averaged Measurements,” International Journal of Turbo and Jet Engines, Vol. 29, 289-298.
Conference Proceedings
1. Lou, F., Herbert, H.*, and Key. N. L., “Investigation of Surge in a Transonic Centrifugal Compressor with Vaned Diffuser - Part 1 Characterization of Surge Signature,” ASME Turbo Expo, Rotterdam, The Netherlands, June 13-17, 2022.
2. Lou, F., Herbert, H.*, and Key. N. L., “Investigation of Surge in a Transonic Centrifugal Compressor with Vaned Diffuser - Part 2 Correlation with Steady Characteristics,” ASME Turbo Expo, Rotterdam, The Netherlands, June 13-17, 2022.
3. Lou, F*., “Approximating Combustor Exit Temperature Distribution Profiles using Spatially Undersampled Data,” ASME Turbo Expo, Rotterdam, The Netherlands, June 13-17, 2022.
4. Zhu, X., Lou, F.*, Zhou, K., and Zheng X. Q., “Reconstructing turbine non-uniform flow including hot-streaks using spatially under-sampled measurements,” ASME Turbo Expo, Rotterdam, The Netherlands, June 13-17, 2022.
5. Lou, F. *, and Key. N. L., “On Choosing the Optimal Impeller Velocity Triangles in Preliminary Design,” ASME Turbo Expo, Virtual Event, June 7-11, 2021.
6. Lou, F. *, Matthews, D. R., Kormanik, N. J, and Key. N. L., “Accounting for Circumferential Flow Nonuniformity in a Multi-Stage Axial Compressor,” ASME Turbo Expo, Virtual Event, June 7-11, 2021.
7. Kamdar, N., Lou, F. *, and Key, N. L., “Details of Shrouded Stator Hub Cavity Flow in a Multi-Stage Axial Compressor Part 1: Interactions with the Primary Flow,” ASME Turbo Expo, Virtual Event, June 7-11, 2021.
8. Kamdar, N., Lou, F. *, and Key, N. L., “Details of Shrouded Stator Hub Cavity Flow in a Multi-Stage Axial Compressor Part 2: Leakage Flow Characteristics in Stator Wells,” ASME Turbo Expo, Virtual Event, June 7-11, 2021.
9. Lou, F. *, and Key. N. L., “Stall Warning using Nonlinear Feature Extraction Algorithms,” ASME Turbo Expo, Virtual Event, September 21-24, 2020.
10. Lou, F. *, and Key. N. L., “Reconstructing Compressor Nonuniform Circumferential Flow from Spatially Under-sampled Data - Part 1: Methodology and Sensitivity Analysis,” ASME Turbo Expo, Virtual Event, September 21-24, 2020.
11. Lou, F. *, Matthews, D. R., Kormanik, N. J, and Key. N. L., “Reconstructing Compressor Nonuniform Circumferential Flow from Spatially Under-sampled Data - Part 2: Practical Applications for Experiments,” ASME Turbo Expo, Virtual Event, September 21-24, 2020.
12. Yang, B., Lou, F. *, and Key, N. L., “Conceptual Design of a 10-passenger Thin-haul Electric Aircraft”, AIAA Propulsion and Energy Forum, Virtual Event, 2020.
13. Harrison, H. *, Lou, F. and Key. N. L., “Investigation of Slip Models for High-Speed Centrifugal Compressors,” Conference Proceedings of AIAA Propulsion and Energy Forum, Indianapolis, Indiana USA, August 19-22, 2019.
14. Lou, F. *, and Key. N. L., “The Design Space for the Final Stage Centrifugal Compressor in Aero Engines,” Conference Proceedings of AIAA Science and Technology Forum and Exposition, San Diego, Florida USA, January 8-12, 2019.
15. Lou, F. *, Fabian, J. C., and Key. N. L., “Design Parameters on Tip Clearance Sensitivity for Centrifugal Compressors in Aero Engines,” Conference Proceedings of AIAA Science and Technology Forum and Exposition, Kissimmee, Florida USA, January 8-12, 2018
16. Lou, F. *, Fabian, J. C., and Key. N. L., “Stall Inception in a High-Speed Centrifugal Compressor During Speed Transients,” Conference Proceedings of ASME Turbo Expo, Charlotte, NC USA, June 26-30, 2017
17. Lou, F. *, Harrison, H., Fabian, J. C., Key. N. L., James, D. K., and Srivastava, R., “Development of a Centrifugal Compressor Facility for Performance and Aeromechanics Research,” Conference Proceedings of ASME Turbo Expo, Seoul, South Korea, June 13-17, 2016
18. Lou, F. *, Fabian, J. C., and Key. N. L., “Experimental Study of Flow Distortion in an APU-Style Inlet,” Conference Proceedings of AIAA/SAE/ASEE Joint Propulsion Conference, Orlando, FL, July 27-29, 2015.
19. Lou, F. *, Murray III, W. L., and Key. N. L., “Development of a Research Facility to Study the Flow Field in an APU-Style Inlet,” Conference Proceedings of AIAA Aerodynamic Measurement Technology and Ground Testing Conference, Dallas, TX, June 22-26, 2015.
20. Lou, F. *, Fabian, J. C., and Key. N. L., “The Effect of Gas Models on Compressor Efficiency Including Uncertainty,” Presented at International Mechanical Engineering Congress and Exposition, San Diego, CA, November 15-21, 2013
Presentations
Research Presentations
1. Lou, F. and Key. N. L., “The Design Space and Considerations for the Final-Stage Centrifugal Compressor in Aero Engines,” Meeting with Rolls-Royce, West Lafayette, IN, December 10, 2018.
2. Lou, F., Leng, Y., and Key. N. L., “Enhanced Physical Understanding of Forced Response, Inlet Distortion, and Blade Row Interactions in the Purdue 3-Stage Compressor,” GUIde Annual Meeting, East Hartford, CT, October 3, 2018.
3. Lou, F., Fabian, J. C., and Key. N. L., “Lessons Learned from Tip Clearance Sensitivity Study on the Single Stage Centrifugal Compressor Facility with Axisymmetric Inlet,” Honeywell Aerospace, Phoenix, AZ, April 26, 2017.
4. Lou, F., Harrison, H. M., McGahan, B. D., Brooks, A. S., Fabian, J. C., and Key. N. L., “Research Activities on the Single Stage Centrifugal Compressor Facility,” Honeywell Aerospace, Phoenix, AZ, April 25, 2017.
5. Lou, F., Fabian, J. C., and Key. N. L., “Research in a Single Stage Centrifugal Compressor Facility and a New Look at Impeller Preliminary Design,” UTRC, East Hartford, CT, November 7, 2016.
6. Lou, F., Fabian, J. C., and Key. N. L., “Research in a Single Stage Centrifugal Compressor Facility and a New Look at Impeller Preliminary Design,” Concepts NREC, White River Jct, VT, October 28, 2016.
7. Lou, F., Fabian, J. C., and Key. N. L., “Introduction to Purdue-Honeywell Single Stage Centrifugal Compressor Facility and Research,” NASA Glenn Research Center, Cleveland, OH, August 9, 2016.
Student Conference and Poster Presentations
1. Yang, B., Lou, F., and Key. N. L., “Conceptual Design of a 10-passenger Thin-Haul Electric Aircraft,” The Summer Undergraduate Research Fellowship (SURF) Symposium, West Lafayette, IN, August 1, 2019.
2. Rivas, J. R., Lou, F., Harrison, H., and Key. N. L., “Measurement and Calibration of Centrifugal Compressor Pressure Scanning Instrumentation,” The Summer Undergraduate Research Fellowship (SURF) Symposium, West Lafayette, IN, August 6, 2015.
3. Lou, F., Harrison, H., Fabian, J. C., and Key. N. L., “Experimental Investigation of Distorted Flow Field in an APU Style Inlet and Its Effect on Compressor Performance and Operability,” ASME Turbo Expo, Montreal, Canada, June 15-19, 2015
Professional Societies and Licensure
American Society of Mechanical Engineers (ASME), since 2013
American Institute of Aeronautics and Astronautics (AIAA)
(Member: 2015-2021; Senior Member: 2021-present)
