Professor

Tel:010-62797060

E-mail address:xiaotigerzhx@tsinghua.edu.cn

Introduction

Dr. Xiao, Tenured professor, Deputy director of Institute of Aerocraft Design, Director of Laboratory of innovative Aerodynamics Simulation and aircraft Design (LASD), Key teacher in Sichuan group of enrolling new undergraduate students for Tsinghua University.

Education background

From Sep. 1993 to July 2003, Major of Aerodynamics, Department of Aircraft Engineering, Northwestern Polytechnical University, degrees of Bachelor, Master and Engineering Doctor.

Experience

Since Oct. 2003, worked as the Post-doctor, Research Assistant, Associate Professor, tenure track Associate Professor, tenured Associate Professor and tenured Professor in School of Aerospace Engineering, Tsinghua University.

From July to December in 2008, as one of the experts for Large Airplane Joint Engineering Team, preliminarily design of C-919 for COMAC.

Social service

Since July, 2022, Committee member of Professional committee for Hypersonic speed in Chinese Aerodynamics Research Society

Since Sep. 2021, Council member of Chinese Aerodynamics Research Society

Since Jan. 2020, Young Editor of《Acta Mechanic Sinica》

Since Sep. 2019, AIAA Associate Fellow

Since Jan. 2018, Scientific member of international symposium of high fidelity industrial LES and DNS

Since Jan. 2017, Committee member of Professional committee for Low-Transonic- Supersonic speed in Chinese Aerodynamics Research Society

Since Jan. 2017, Committee member of Professional committee for Aero-Dynamic Loads in Chinese Aeronautics Research Society

Since Jan. 2015, Young Editor of《Acta Aerodynamics Sinica》and 《Journal of Experiments in Fluid Mechanics》

Courses

《Airplane preliminary design》for the undergraduate students

《Aerodynamics for the Airplane Components》for the graduate students

Research interests and projects

His research interests are the hypersonic transition, unsteady turbulence, high-order computational scheme, CFD software research, development and application and multi-physical field simulations, such as aeroacoustics, aero-elastics, aero-heating, and so on.

A. Multi-level transition simulation models. They are direct numerical simulation (DNS) of the roughness or cavity induced transition, Reynolds-averaged Navier-Stokes and large-eddy simulation (RANS-LES), transition model, including the factors of bluntness, distributed roughness, ablation and oscillation for the boundary layer transition, even the improvement of transition model by field inversion and machine learning, and linear stability theory (LST).

B. RANS-LES hybrid model in wide-speed rang. Since 2003, under the support of NSFC and many other projects, he developed, improved and applied the RANS-LES hybrid model, which has the properties of both high-efficiency and high-accuracy. He proposed the new RANS-LES-Tr model based on the transition model to simultaneously upstream transition and downstream massively unsteady separation flows from low to hypersonic speed. He has proposed a newly adaptive coefficient (AC) RANS-LES-AC model to mitigate the grey area from RANS to LES. He also proposed the adaptive dissipation scheme (AD) in the wide-speed range for the RANS-LES hybrid models. He also applied the new RANS-LES hybrid model to the industrial cases, such as the landing gear of civil airplane, massive separation for fighter at high angle of attack, interactions of shock wave and boundary layer, interactions of vortices and components of airplane, etc.

C. Development of CFD software UNITs. He developed and improved the in-house CFD software, UNITs, to solve the challenging problems in the industries of aeronautics and astronautics in a wide Mach number range, such as transition, dynamic loads, aeroacoustics, flow control, and so on. This software has the fully intellectual property and it combines the mechanics exploration and industrial applications.

D. Projects. As a PI, he has been responsible for over 120 projects from NSFC, AVIC, CASIC,CASC, COMAC, and so on, for the aerodynamics, dynamic loads and flow controls. He also participated in the international cooperation, such as European FP-7 project, ATAAC, and the Euro-China cooperation projects, MARS and IMAGE.

Honors and Awards

2018, XXXX dynamic loads research, Second class, Award for National Defense Science and Technology Progress, MIIT

2017, Award for Excellent enrollment Teacher, Tsinghua University

2008, Second class, Award for Excellence in Teaching, Tsinghua University

2008, First class, Award for Excellent Class Mentor, Tsinghua University

1999, First class, Award for Excellence in S & T, AVIC

Members of LASD

Many LASDers have or had worked or are working in laboratory, including the staff, post-doctors, Ph. D, Master and Undergraduate graduation students.

Staff

Finance: Chunxiu XIANG (2014-2019, retired), Ligang WANG (2019-)

Research Assistant: Shenghui GAO (2019-2021)

Post-doctors

Jingbo HUANG (2011-2013), Zhiwei DUAN (2015-2017), Hexia HUANG (2018- 2020), Kai LIU (2020-2022), He Wang (2023-)

Ph. D Students

Already graduated:

Jan. 2015, Zhiwei DUAN

July 2015, Kunyu LUO

Jan. 2019, Jian LIU

July 2019, Guangxing WANG

July 2020, Biao WANG, Muchen YANG, Wenqing ZHU

Oct. 2020, Wenyao CUI

July 2022, Xiaowei GUO

Being in LASD:

Yijiang YANG, Tian BAI, Shihe JIA, Heng ZHANG, Chenyang LU, Xiangyu ZHANG

Rong CHEN, Xin JIN, Jibin TANG, Xiaolong CAO, Huan LIU, Hongkui WEI.

Ph.D Students for other professor

2005-2011, Jingbo HUANG

2009-2014, Lianghua XIAO

Master Students

Already graduated:

July 2011, Jian LIU

July 2012, Yan LI, Shiming WANG

July 2013, Minghua ZHANG

July 2014, Peng GAO, Yang WANG

July 2015, Jiong LUO, Heng WANG, Ze WENG

Jan. 2016, Xiao LI, Zhenyu ZHANG

July 2016, Wenkuan CAI, Jintong LIU

July 2017, Yuchi GAO, Yuanhao SUN, Xuan ZHANG, Youwei ZHENG

July 2018, Xiaoling HUANG, Ziyuan LIU, Yintao WANG, Jin XIE, Linming YAN

July 2019, Zhuxuan XIE

July 2020, Jianheng XUE

July 2022, Yu PANG

Being in LASD: Han BAO

Undergraduate graduation students

July 2005, Jingbo HUANG

July 2006, Enwei LU, Wenqing SHI

July 2007, Guowu XU

July 2008, Tao QIANG, Jianlan YANG, Keke ZHOU

July 2009, Zhiwei DUAN, Shiming WANG, Peng ZHANG

July 2010, Wenkuan CAI, Peng GAO, Yu YANG

July 2011, Li LIN, Jiong LUO, Lisha WANG, Hongkui WEI, Weihao ZHAO

July 2012, Ziwen FANG, Fan FENG, Kunyu LUO, Lantu WU, Youwei ZHENG

July 2013, Jiawei FU, Ang LI, Ziyuan LIU, Yuchi ZHANG, Wanjia ZHANG

July 2014, Yuchi GAO, Mengyao JIANG, Jintong LIU, Qing XIE, Wenqing ZHU July 2015, Xiaoling HUANG, Jin XIE, Linming YAN, Muchen YANG, Xuan ZHANG

July 2016, Hongjiao ZHAO

July 2017, Jianheng XUE(BIT), Jinhao ZHENG, Yun ZHU

July 2018, Zixuan LI, Xinyuan SHAO(NUAA); Yuchen SUN, Haoming ZHAO

July 2019, Jiaoying LI, Xiaoxuan MA, Xin PAN, Yu PANG(NWPU), Yijiang YANG(NUAA), Yu ZHANG

July 2020, Tian BAI, Shihe JIA

July 2021, Han BAO, Lu CHEN, Heng ZHANG, Hongpu SUN

July 2022, Yuqiang HU, Rongji LIANG, Chenyang LU

July 2023, Xiangyu ZHANG

Academic Achievement

CFD Software UNITs and TRANS: The in-house CFD software, UNITs, is to solve the challenging problems of unsteady separation for the dynamic loads at the high Reynolds numbers. Another in-house CFD software, TRANS, is to solve the industrial transition problems from low to hypersonic speed. Both UNITs and TRANS are based on structured mesh. Now, the third CFD software, U2NITs, on basis of unstructured mesh, are being developed to solve the extremely complex geometries for the industry.

Hardware devices: In LASD, the internet isolate PC clusters have been constructed for the massively parallel computations and it has more than 2000 cores and over 80 trillion times computational capability.

Publications: He has published more 120 papers, including near 50 peer-reviewed SCI journal papers and more than 20 invited papers(before Jan. 31, 2023)

AppendixSelective publications

Peer-reviewed SCI journal papers

Multi-level Transition simulations (DNS, RANS-LES, Transition model and LST)

1. Bai T, Duan ZW & Xiao ZX*, Depth effects on the cavity induced transition at hypersonic speed by DNS. International Journal of Heat and Fluid Flow 97 (109028) : 1-16, 2022.

2. Duan ZW & Xiao ZX *, Effects of external disturbances on the diamond-induced transition by DNS. AIAA Journal, 60(2):731-746,2022.

3. Duan ZW and Xiao ZX*,Hypersonic transition induced by three isolated roughness elements on a flat plate. Computers and Fluids, 157, 1-13, 2017. http://dx.doi.org/10.1016/j.compfluid. 2017.08.006

4. Duan ZW, Xiao ZX* and Fu S. Direct numerical simulation of hypersonic transition induced by an isolated cylindrical roughness element. Science China Physics, Mechanics & Astronomy, 57(12), 2330-2345, 2014. doi: 10.1007/s11433-014-5556-4

5. Wang GX, Xiao ZX* and Chen LZ. Simultaneous simulation of transition and massive separation by RANS-LES-Tr model. Aerospace Science and Technology, 105, 106026, 2020. https://doi.org/10.1016/j.ast.2020.106026

6. Cui WY, Xiao ZX* and Yuan XJ. Simulations of transition and separation past a wind-turbine airfoil near stall. Energy, 205, 118003, 2020. https://doi.org/10.1016/j.energy. 2020.118003

7. Xiao ZX *, Wang GX, Yang MC and Chen LZ. Numerical investigations of hypersonic transition and massive separation past Orion capsule by DDES-Tr. International Journal of Heat and Mass Transfer, 137, 90-107, 2019. https://doi.org/10.1016/j.ijheatmasstransfer. 2019.03.119

8. Xiao LH, Xiao ZX, Duan ZW and Fu S*. Improved-delayed-detached-eddy simulation of cavity-induced transition in hypersonic boundary layer. International Journal of Heat and Fluid Flow, 51, 138-150, 2015. http://dx.doi.org/10.1016/j.ijheatfluidflow.2014.10.007

9. Yang MC and Xiao ZX*. Improving the k-ω-γ-Ar transition model using the field inversion and machine learning framework. Physics of Fluids, 32, 064101, 2020. https://doi.org/10.1063/ 5.0008493

10. Yang MC and Xiao ZX*. Parameter uncertainty quantification for a four-equation transition model using a data assimilation approach. Renewable Energy. 158, 215-226, 2020. https://doi.org/10.1016/j.renene.2020.05.139

11. Yang MC and Xiao ZX*. POD-based surrogate modeling of transitional flows using an adaptive sampling in Gaussian process. International Journal of Heat and Fluid Flow. 84, 108596, 2020. https://doi.org/10.1016/j.ijheatfluidflow.2020.108596

12. Yang MC and Xiao ZX*, Distributed roughness induced transition on wind-turbine airfoils simulated by four-equation k-omega-gamma-Ar transition model. Renewable Energy, 135, 166-177, 2019. https://doi.org/10.1016/j.renene.2018.12.091

13. Liu J, Xiao ZX* and Fu S. Investigations of unsteady transition flows over a pitching airfoil using a k-w-g transition model. AIAA Journal, 56(9),3776-3781,2018. DOI: 10.2514/1.J056466

14. Wang GX, Yang MC, Xiao ZX* and Fu S. Improved k-w-g transition model by introducing the local effects of nose bluntness for hypersonic heat transfer. International Journal of Heat and Mass Transfer, 119, 185-198, 2018. https://doi.org/10.1016/j.ijheatmasstransfer. 2017.11.103

15. Zhao M, Xiao ZX and Fu S*, Predictions of transition on a hovering tilt-rotor blade. Journal of Aircraft, 51(6), 1094-1103, 2014. DOI: 10.2514/1.C032570

16. Xu GL, Xiao ZX and Fu S*. Secondary instability control of compressible flow by suction for a swept wing. Science China Physics, Mechanics & Astronomy, 54(11), 2040-2052, 2011. doi: 10.1007/s11433-011-4487-6

17. Xu GL, Xiao ZX and Fu S*. Analysis of the secondary instability of the incompressible flows over a swept wing. Science China Physics, Mechanics & Astronomy, 54(4), 724-736, 2011. doi: 10.1007/s11433-011-4294-0

RANS-LES Hybrid Model and its applications

18. Liu J, Chen JQ, Ren HX, Zhang Y, He XY and Xiao ZX*, Correlations of unsteady vortex burst point and dynamic stability over a pitching double-delta wing. Aerospace Science and Technology. 107, 106256, 2020. https://doi.org/10.1016/j.ast.2020.106256

19. Liu J and Xiao ZX *, Low-Frequency Oscillation over NACA0015 Airfoil Near Stall at High Reynolds Number. AIAA Journal, 58(1), 53-60, 2020. DOI: 10.2514/1.J058598

20. Zhu WQ, Xiao ZX* and Fu S. Numerical modeling screen for flow and noise control around tandem cylinders. AIAA Journal, 58 (6), 2504-2516, 2020. https://doi.org/10.2514/1.J058636

21. Zhu WQ, Xiao ZX * and Fu S. Studies of flight-velocity effects on near-field and intermittent properties of a subsonic jet. Computers & Fluids, 196, 104351, 2020. https://doi.org/10.1016/j.compfluid.2019.104351

22. Wang B, Liu J, Xiao ZX* and Yang YJ. Numerical studies of undulation control on dynamic stall for reverse flows. Acta Mechanics Sinica. 36, 290–305, 2020. https://doi.org/10.1007/s10409-020-00950-7

23. Wang B, Liu J, Li QB, Yang YJ and Xiao ZX*, Numerical studies of reverse flows controlled by undulating leading edge. Science China Physics, Mechanics & Astronomy, 62(7),94712, 2019. doi: 10.1007/s11433-018-9331-y

24. Liu J, Zhu WQ, Xiao ZX*, Sun HS, Huang Y and Liu ZT. DDES with adaptive coefficient for stalled flows past a wind-turbine airfoil. Energy, 161,846-858, 2018. https://doi.org/10.1016/ j.energy.2018.07.176

25. Liu J, Luo KY, Sun HS, HY, Liu ZT and Xiao ZX*. Dynamic response of vortex breakdown flows to a pitching double-delta wing. Aerospace Science and Technology, 72, 564-577, 2018. https://doi.org/10.1016/j.ast.2017.10.008

26. Cui WY, Liu J, Sun YH, Li QB and Xiao ZX*. Airbrake controls of pitching moment and pressure fluctuation for an oblique tail fighter model. Aerospace Science and Technology, 81,294-305,2018. https://doi.org/10.1016/j.ast.2018.08.016

27. Tan S, Li QB*, Xiao ZX and Fu S. Gas kinetic scheme for turbulence simulation, Aerospace Science and Technology, 78, 214-227, 2018. https://doi.org/10.1016/j.ast.2018.04.022

28. Luo KY, Zhu WQ, Xiao ZX*, Weng Z, Deng LD, Liu J and Yang DG, Investigations on spectral characteristics of passive controls in a supersonic cavity flow. AIAA Journal, 56(7),2669-2686,2018. DOI: 10.2514/1.J056689

29. Luo KY, Weng Z, Xiao ZX* and Fu S. Improved delayed detached-eddy simulations of sawtooth spoiler control before supersonic cavity. International Journal of Heat and Fluid Flow, 63, 172-189, 2017. http://dx.doi.org/10.1016/j.ijheatfluidflow.2017.01.012

30. Xiao ZX* and Luo KY. Improved delayed detached-eddy simulations of massive separation around triple cylinders. Acta Mechanica Sinica. 31(6), 799–816, 2015. DOI 10.1007/ s10409-015-0445-2

31. Liu J, Sun HS, Liu ZT and Xiao ZX*, Numerical investigation on unsteady vortex breakdown past the 80°/65° double-delta wing. Chinese Journal of Aeronautics, 27(3), 521-530, 2014. http://dx.doi.org/10.1016/j.cja.2014.04.018

32. Xiao ZX, Liu J, Luo KY, Huang JB and Fu S*. Numerical investigation of massively separated flows past rudimentary landing gear using advanced DES approaches. AIAA Journal, 51(1), 107-125, 2013. DOI: 10.2514/1.J051598

33. Xiao ZX, Liu J, Huang JB and Fu S*. Numerical dissipation effects on the massive separation around tandem cylinders. AIAA Journal, 55(5), 1119-1136, 2012. DOI: 10.2514/1.J051299

34. Huang JB, Xiao ZX, Liu J and Fu S*. Simulation of shock wave buffet and its suppression on an OAT15A supercritical airfoil by IDDES. Science China Physics, Mechanics & Astronomy, 55(2), 260-271, 2012. doi: 10.1007/s11433-011-4601-9

35. Xiao ZX*, Liu J and Fu S. Predictions of massive separation around landing-gear-like geometries. Journal of Hydrodynamics, 22(5), 883-888, 2010. DOI: 10.1016/S1001-6058 (10)60054-6

36. Xiao ZX* and Fu S. Studies of the unsteady supersonic base flows around three afterbodies. ACTA Mechanics Sinica,25, 471-479, 2009. DOI 10.1007/s10409-009-0248-4

37. Xiao ZX*, Zhang YF, Huang JB, Chen HX and Fu S. Prediction of separation flows around a 6:1 prolate spheroid using RANS/LES hybrid approaches. ACTA Mechanics Sinica, 23(4), 369–382, 2007. DOI 10.1007/s10409-007-0073-6

38. Fu S*, Xiao ZX, Chen HX, Zhang YF and Huang JB. Simulation of wing-body junction flows with hybrid RANS/LES methods. International Journal of Heat and Fluid Flow, 28, 1379-1390, 2007. doi:10.1016/j.ijheatfluidflow.2007.05.007

39. Xiao ZX*, Chen HX, Zhang YF, Huang JB and Fu S. Study of delayed-detached eddy simulation with weakly nonlinear turbulence model. Journal of Aircraft, 43(5), 1377-1385, 2006. DOI: 10.2514/1.20127

Others

40. Liu J, Chen JQ, Zhang ZP, Yang YF and Xiao ZX*. Assessment of a new hybrid-SSOR implicit temporal scheme for turbulent flows across a wide range of Mach numbers. Acta Mechanica Sinica, 39 (322398) : 1-10, 2023.

41. Xie ZX, Xiao ZX, Wang G and Yang YG*. Direct numerical simulation of the effects of Reynolds number in Mach 2.9 flows over an expansion–compression corner. Physics of Fluids, 34 (125129) : 1-20, 2022.

42. Huang HX, Tan HJ*, Lin ZK, Li ZJ, Sun S, Chen H and Xiao ZX, Flowfield of a helicopter submerged inlet with power output shaft. Acta Mechanica Sinica, 37(1), 156–168, 2021. https://doi.org/10.1007/s10409-020-01029-z

43. Xie Q, Xiao ZX and Ren ZY*, A spectral radius scaling semi-implicit iterative time stepping method for reactive flow simulations with detailed chemistry, Journal of Computational Physics, 368, 47-68,2018. https://doi.org/10.1016/j.jcp.2018.04.042

44. Liu J, Sun HS, Huang Y, Jiang Y and Xiao ZX*,Numerical investigation of an advanced aircraft model during pitching motion at high incidence. Science China –Technological Sciences, 59(2), 276-288, 2016. doi: 10.1007/s11431-015-5957-2

45. Huang JB,Xiao ZX and Fu S*, Study of control effects of vortex generators on a supercritical wing. Science China –Technical Sciences, 53, 2038-2048, 2010. doi: 10.1007/s11431-009-3240-0

46. Xiao ZX*, Chen HX, Fu S and Li FW. Computations with k-g model for complex configurations at high-incidence. Journal of Aircraft, 42(2), 462-468, 2005.

Invited conference papers

1. Zhixiang XIAO, The modeling and resolving of boundary layer transition at hypersonic, China Academy of Launch Vehicle Technology (CALT), Dec, 26, 2022. (In Chinese)

2. Zhixiang XIAO, Wide speed-rang RANS-LES hybrid models and its applications, Taihu Laboratory of Deepsea Technological Science, Jiaolong Forum, Nov. 26, 2022. (In Chinese)

3. Zhixiang XIAO, The studies of start boundary and anti-reverse pressure for inlet. Symposium on M4 combine engine design and technology, Dec. 1, 2021, Chengdu, Sichuan, China. (In Chinese)

4. Zhixiang XIAO, Adaptive dissipation scheme in wide Ma rang for RANS-LES hybrid models, HOMA-CFD-2021, July 23 -25, 2021, Shanghai University, Shanghai. (In Chinese)

5. Zhixiang XIAO, RANS-LES hybrid models and its applications, Institute of Mechanics, Chinese Academy of Science, June 2, 2021, Beijing. (In Chinese)

6. Zhixiang XIAO, Transition and unsteady turbulence at hypersonic speed, National University of Defense Technology. April 9, 2021, Changsha, Hunan (In Chinese)

7. Zhixiang XIAO, Simultaneous prediction of transition and massive unsteady separations, Four-season forum for aerodynamics, March 9, 2021, CAAA, Beijing. (In Chinese)

8. Zhixiang XIAO, Studies of four-equation transition model based on the dada-driven methods, Symposium on the artificial intelligence for fluid mechanics, Nov. 2020, NWPU, Xi’an, Shanxi. (In Chinese)

9. Zhixiang XIAO, The frame of RANS-LES hybrid models. July, 2020, CARDC, Mianyang, Sichuan. (In Chinese)

10. Zhixiang XIAO, Studies of jet flows and its interactions between the jet and wing,Nov. 2019, Symposium on AMD HPS 2019, Beijing (In Chinese)

11. Zhixiang XIAO, The framework of RANS-LES hybrid models,15th conference for national HPC, Aug. 2019, Hohhot, Inner Mongolia. (In Chinese)

12. Zhixiang XIAO *, Simultaneous studies of flows with transition and massive separation, Int. Symposium on High-Fidelity Computational Methods & Applications, 14-16, Dec, 2019, Shanghai.

13. Zhixiang XIAO, Hypersonic transition and the coherent structures in unsteady turbulent flows,13th forum on national system model and simulation, Oct, 2018, Beijing. (In Chinese)

14. Zhixiang XIAO, Modelling and resolving the transition and turbulence. University of Science and Technology of China, May 27, 2018, Hefei, Anhui. (In Chinese)

15. Zhixiang XIAO *,Unsteady flows and airframe noise past landing gear-like geometries, 1st Advanced AeroAcoustics Workshop, Nov.29-30, 2017, BUAA, Beijing.

16. Zhixiang XIAO, Progress on Transition and unsteady turbulence,Forum on Mechanics of NWPU, Nov. 2017, Xi’an Shanxi. (In Chinese)

17. Zhixiang XIAO,RANS-LES hybrid model and its applications for the dynamic loads. Conference for Aero-Dynamic Loads in Chinese Aeronautics Research Society, Dec. 8-9, 2016, Zhuhai, Guangdong. (In Chinese)

18. Zhixiang XIAO, Studies of effects on the inlet unstart. 5th conference on scramjet engine. Sep. 2015, Xiamen, Fujian. (In Chinese)

19. Zhixiang XIAO and Song Fu*. Simulations of Complex Turbulent Flows with RANS-LES Hybrid Approaches. 3rd symposium on Fluid-Structure-Sound interactions and Control (FSSIC3), July 5 – 9, 2015, Perth, Australia.

20. Zhixiang XIAO, IDDES model and its applications in LAST,Conference of Chinese Mechanics, the Symposium on RANS/LES hybrid models, Aug. 2013,Xi’an Shanxi. (In Chinese)

21. Zhixiang XIAO, Prediction of unsteady and massive separation flows past the landing gear,Conference of Professional committee CFD in Chinese Aerodynamics research society, Sep. 2011, Wuyishan, Hujian. (In Chinese)

22. Zhixiang XIAO, RANS/LES hybrid models and their applications. Conference of Chinese Mechanics, Fluid Mechanics,2011, Aug. 2011, Haerbing, Heilongjiang. (In Chinese)

23. Song Fu *, Zhixiang Xiao. Investigation of Practical Flow Control Methodologies with RANS/LES Hybrid Methods, 3rd Symposium on RANS/LES Hybrid Methods, June 2009, Gdansk, Poland.