Jianming Yang

Research Scientist
IIHR - Hydroscience and Engineering

Adjunct Associate Professor
Department of Mechanical and Industrial Engineering

223F, C. Maxwell Stanley Hydraulics Laboratory
University of Iowa
Iowa City, Iowa 52242
Tel. +1 (319) 335 5749
Fax. +1 (319) 335 5238

Email: jianming dash yang at uiowa dot edu

Research Interests

Fluid Dynamics, Fluid-Structure Interaction,
Scientific Computing.

Present highlight

Current Research

I am a Research Scientist with Prof. Frederick Stern's ship hydrodynamics group in the IIHR - Hydroscience and Engineering at the University of Iowa. My current research is focused on the development of numerical methods for a variety of applications: free-surface/interfacial flows, fluid-structure interactions, and others.

Numerical methods:

  1. Level set method;
  2. Sharp interface method.

Validation cases:

  1. Solitary wave;
  2. Dam-break problem;
  3. 3D spherical cap bubble.

Non-breaking and Breaking waves generated by immersed bodies:

  1. 2D non-breaking waves generated by an immersed NACA0012 hydrofoil;
  2. 3D spilling breaking waves generated by an immersed NACA0012 hydrofoil;
  3. 2D impulsive plunging breaking waves behind a surface-mounted bump;
  4. 3D impulsive plunging breaking wave behind a surface-mounted bump.

Breaking waves generated by free-surface-piercing bodies:

  1. 3D waves generated by a NACA0024 hydrofoil;
  2. 3D waves around a DTMB5512 model.

Two-phase flows interacting with moving bodies:

  1. 2D wave-body interaction: rotators;
  2. 2D water exit;
  3. 2D water entry and impact;
  4. 3D landslide-generated waves.

Doctoral Research

I received my PhD degree in Mechanical Engineering at the University of Maryland, College Park in 2005 under the supervision of Prof. Elias Balaras. In the course of my PhD study, I developed a highly efficient embedded boundary method with formal second-order accuracy for the high-fidelity simulations (LES and DNS) of turbulent flows interacting with complex geometries and moving boundaries. This method is a variation of the immersed boundary method and it can describe the moving or deforming interfaces on Cartesian grids without smearing the sharpness of the interfaces. We have successfully applied this method to the a variety of non-trivial cases in bluff-body flows, biological flows, physiological flows, vortex-induced vibrations, and fluid-structure interactions:

Two-dimensional validation cases with moving bodies (prescribed motions):

  1. Translating cylinders in a planar channel;
  2. Forced oscillating cylinder in a quiescent fluid at Re=100;
  3. Forced oscillating cylinder in cross flow at Re=185;

Two-dimensional fluid-structure interactions/vortex induced vibrations (two-way coupling):

  1. Cylinder with one degree of freedom in cross flow at Re=90~200;
  2. Cylinder with two degrees of freedom in cross flow at Re=200;
  3. Vortex-induced vibration in an Array of Cylinders at Re=200.

Three-dimensional cases with stationary bodies:

  1. LES of fully developed turbulent pipe flow;
  2. DNS of laminar flow past a sphere at Re = 50, 100, 150, 200, and 250;
  3. DNS of laminar flow past a sphere at Re = 300;
  4. DNS of transitional flow past a sphere at Re=1,000;
  5. LES of transitional flow over an airfoil at Reynolds number 10,000.

Three-dimensional cases with moving boundaries:

  1. LES of turbulent flow over a traveling wavy wall at Re=10,170;
  2. LES of transitional flow past a mechanical heart valve with moving leaflets at Re=4,000.

Education

Ph.D., Mechanical Engineering, University of Maryland, College Park, USA, 2005.
M.S., Civil Engineering, Nanjing Hydraulic Research Institute, China, 1999.
B.S., Civil Engineering, Wuhan University of Hydraulic and Electric Engineering, China, 1996.

Journal Publications

(please email me to obtain papers listed here if you have problems using the links)
  1. Jianming Yang and Frederick Stern, A sharp interface direct forcing immersed boundary approach for fully resolved simulations of particulate flows, ASME Journal of Fluids Engineering, 136(4), 040904 (10 pages), 2014, doi:10.1115/1.4026198. PDF
  2. Jianming Yang and Frederick Stern, Robust and efficient setup procedure for complex triangulations in immersed boundary simulations, ASME Journal of Fluids Engineering, 135(10), 101107(11 pages), 2013, doi:10.1115/1.4024804. PDF
  3. Frederick Stern, Jianming Yang, Zhaoyuan Wang, Hamid Sadat-Hosseini, Maysam Mousaviraad, Shanti Bhushan, Tao Xing, Computational Ship Hydrodynamics: Nowadays and Way Forward, International Shipbuilding Progress, Vol. 60 (1-4), pp. 3-105, 2013, doi:10.3233/ISP-130090. PDF
  4. Bonguk Koo, Zhaoyuan Wang, Jianming Yang, and Frederick Stern, Impulsive plunging wave breaking downstream of a bump in a shallow water flume - Part II: Numerical simulations, Journal of Fluids and Structures, Vol. 32, pp. 121-134, 2012, doi:10.1016/j.jfluidstructs.2011.10.011. PDF
  5. Jianming Yang and Frederick Stern, A simple and efficient direct forcing immersed boundary framework for fluid-structure interactions, Journal of Computational Physics, Vol. 231 (15), pp. 5029-5061, 2012, doi:10.1016/j.jcp.2012.04.012. PDF
  6. Zhaoyuan Wang, Jianming Yang, and Frederick Stern, A simple and conservative operator-splitting semi-Lagrangian volume-of-fluid advection scheme, Journal of Computational Physics, Vol. 231 (15), pp. 4981-4992, 2012, doi:10.1016/j.jcp.2012.04.029. PDF
  7. Zhaoyuan Wang, Jianming Yang, and Frederick Stern, A new volume-of-fluid method with a constructed distance function on general structured grids, Journal of Computational Physics, Vol. 231 (9), pp. 3703-3722, 2012, doi:10.1016/j.jcp.2012.01.022. PDF
  8. Shanti Bhushan, Pablo Carrica, Jianming Yang, and Frederick Stern, Scalability study and large grid computations for surface combatant using CFDShip-Iowa, International Journal of High Performance Computing Applications, Vol. 25 (4), pp. 466-487, 2011, doi:10.1177/1094342010394887. PDF
  9. Jungsoo Suh, Jianming Yang, and Frederick Stern, The effect of air-water interface on the vortex shedding from a vertical circular cylinder, Journal of Fluids and Structures, Vol. 27 (1), pp. 1-22, 2011, doi:10.1016/j.jfluidstructs.2010.09.001. PDF
  10. Jianming Yang and Frederick Stern, Sharp interface immersed-boundary/level-set method for wave-body interactions, Journal of Computational Physics, Vol. 228 (17), pp. 6590-6616, 2009, doi:10.1016/j.jcp.2009.05.047. PDF
  11. Zhaoyuan Wang, Jianming Yang, and Frederick Stern, An improved particle correction procedure for the particle level set method, Journal of Computational Physics, Vol. 228 (16), pp. 5819-5837, 2009, doi:10.1016/j.jcp.2009.04.045. PDF
  12. Zhaoyuan Wang, Jianming Yang, Bonguk Koo, and Frederick Stern, A coupled level set and volume-of-fluid method for sharp interface simulation of plunging breaking waves, International Journal of Multiphase Flow, Vol. 35 (3), pp. 227-246, 2009, doi:10.1016/j.ijmultiphaseflow.2008.11.004. PDF
  13. Jianming Yang, Sergio Preidikman, and Elias Balaras, A strongly-coupled, embedded-boundary method for fluid-structure interactions of elastically mounted rigid bodies, Journal of Fluids and Structures, Vol. 24 (2), pp. 167-182, 2008, doi:10.1016/j.jfluidstructs.2007.08.002. PDF
  14. Jianming Yang and Elias Balaras, An Embedded-Boundary Formulation for Large-Eddy Simulation of Turbulent Flows Interacting with Moving Boundaries, Journal of Computational Physics, Vol. 215 (1), pp. 12-40, 2006, doi:10.1016/j.jcp.2005.10.035. PDF
  15. Elias Balaras and Jianming Yang, Nonboundary Conforming Methods for Large-Eddy Simulations of Biological Flows, ASME Journal of Fluids Engineering, Vol. 127 (5), pp. 851-857, 2005, doi:10.1115/1.1988346. PDF
  16. Jianming Yang and Jianhua Wu, Numerical Simulation of Scouring Process under Spillway, Journal of Hydrodynamics, Ser. B, Vol. 13, No. 4, December 2001, pp. 55-59. PDF

Conference Proceedings

  1. Akira Hanaoka, Jianming Yang, Frederick Stern, Toward wall modeling in Cartesian grid solver using overset grid technique for ship hydrodynamics, FEDSM2013-16481, Proceedings of the ASME 2013 Fluids Engineering Summer Meeting, July 7-11, 2013, Incline Village, Nevada, USA. preprint
  2. Thad Michael, Jianming Yang, and Frederick Stern, Sharp interface cavitation modeling using volume of fluid and level set methods, FEDSM2013-16479, Proceedings of the ASME 2013 Fluids Engineering Summer Meeting, July 7-11, 2013, Incline Village, Nevada, USA. preprint
  3. Jianming Yang, Frederick Stern, Fully resolved simulation of particulate flow using a sharp interface direct forcing immersed boundary method, FEDSM2013-16478, Proceedings of the ASME 2013 Fluids Engineering Summer Meeting, July 7-11, 2013, Incline Village, Nevada, USA. preprint
  4. Frederick Stern, Jianming Yang, Zhaoyuan Wang, Hamid Sadat-Hosseini, Maysam Mousaviraad, Shanti Bhushan, Tao Xing, Computational Ship Hydrodynamics: Nowadays and Way Forward (invited paper), Proceedings of the 29th Symposium on Naval Hydrodynamics, Gothenburg, Sweden, 26-31 August 2012. preprint
  5. Jianming Yang, Zhaoyuan Wang, Seongmo Yeon, Bonguk Koo, and Frederick Stern, High-Fidelity Curvilinear-Grid Two-Phase Flow Solvers for Ship Hydrodynamics, Proceedings of the 29th Symposium on Naval Hydrodynamics, Gothenburg, Sweden, 26-31 August 2012. preprint
  6. Jianming Yang and Frederick Stern, Robust and efficient setup procedure for complex triangulations in immersed boundary simulations, Proceedings of the ASME 2012 Fluids Engineering Summer Meeting, FEDSM2012-20002, July 8-12, 2012, Rio Grande, Puerto Rico. preprint
  7. Zhaoyuan Wang, Jungsoo Suh, Jianming Yang, and Frederick Stern, Sharp Interface LES of Breaking Waves by an Interface Piercing Body in Orthogonal Curvilinear Coordinates, AIAA-2012-1111, 50th AIAA Aerospace Sciences Meeting and Exhibit, 9-12 January 2012, Nashville, Tennessee. AIAA-2012-1111
  8. Jianming Yang and Frederick Stern, Fast and accurate simulation of strongly coupled fluid-structure interaction using a direct forcing immersed boundary method, ASME-JSME-KSME Joint Fluids Engineering Conference, AJK2011-20002, 24-29 July, 2011, Hamamatsu, Shizuoka, Japan. preprint
  9. Shanti Bhushan, Akira Hanaoka, Jianming Yang, and Frederick Stern, Wall-Layer Modeling for Cartesian Grid Solver Using an Overset Boundary Layer Orthogonal Curvilinear Grid, AIAA-2011-0756, 49th AIAA Aerospace Sciences Meeting and Exhibit, 4-7 January 2011, Orlando, Florida. AIAA-2011-756
  10. Jianming Yang, Thad Michael, Shanti Bhushan, Akira Hanaoka, Zhaoyuan Wang, and Frederick Stern, Motion prediction using wall-resolved and wall-modeled approaches on a Cartesian grid, 28th Symposium on Naval Hydrodynamics, Pasadena, California, September 12-17, 2010. preprint
  11. Zhaoyuan Wang, Jianming Yang, and Frederick Stern, Numerical simulations of wave breakings around a wedge-shaped bow, 28th Symposium on Naval Hydrodynamics, Pasadena, California, September 12-17, 2010. preprint
  12. Bonguk Koo, Jungsoo Suh, Jianming Yang, and Frederick Stern, Simulation of two-phase flow past a vertical surface-piercing circular cylinder, ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting, FEDSM-ICNMM2010-30102, August 2-4, 2010, Montreal, Canada. preprint
  13. Bonguk Koo, Zhaoyuan Wang, Jianming Yang, Donghoon Kang, and Frederick Stern, Impulsive plunging wave breaking downstream of a bump in a shallow water flume, ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting, FEDSM-ICNMM2010-30092, August 2-4, 2010, Montreal, Canada. preprint
  14. Jianming Yang and Frederick Stern, Efficient simulation of fully coupled wave-body interactions using a sharp interface immersed-boundary/level-set method, ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting, FEDSM-ICNMM2010-30103, August 2-4, 2010, Montreal, Canada. preprint
  15. Zhaoyuan Wang, Jianming Yang, and Frederick Stern, URANS study of air-layer drag reduction in a high-Reynolds-number flat-plate turbulent boundary layer, AIAA-2010-4276, 40th AIAA Fluid Dynamics Conference, June 28-July 1, Chicago, Illinois, USA. AIAA-2010-4276
  16. Frederick Stern, Shanti Bhushan, Pablo Carrica, and Jianming Yang, Large scale parallel computing and scalability study for surface combatant static maneuver and straight ahead conditions using CFDShip-Iowa, in: Proc. 21st Int. Conf. Parallel Comput. Fluid Dynamics, Moffett Field, CA, 2009. preprint
  17. Jianming Yang, Shanti Bhushan, Jungsoo Suh, Zhaoyuan Wang, Bonguk Koo, Nobuaki Sakamoto, Tao Xing, and Frederick Stern, Large-Eddy Simulation of Ship Flows with Wall-Layer Models on Cartesian Grids, 27th Symposium on Naval Hydrodynamics, 5 - 10 October 2008, Seoul, Korea. preprint
  18. Zhaoyuan Wang, Jianming Yang, and Frederick Stern, Comparison of Particle Level Set and CLSVOF Methods for Interfacial Flows, 46th AIAA Aerospace Sciences Meeting and Exhibit, 7 - 10 January 2008, Reno, Nevada. AIAA-2008-530
  19. Surajeet Ghosh, George Reins, Bonguk Koo, Zhaoyuan Wang, Jianming Yang, and Frederick Stern, Plunging Wave Breaking: EFD and CFD, Proceedings of International Conference on Violent Flows (VF-2007), Fukuoka, Japan, November 2007. preprint
  20. Jianming Yang, Nobuaki Sakamoto, Zhaoyuan Wang, Pablo Carrica, and Frederick Stern, Two Phase Level-Set/Immersed-Boundary Cartesian Grid Method for Ship Hydrodynamics, Proceedings of the 9th International Conference on Numerical Ship Hydrodynamics, Ann Arbor, Michigan, August 2007. preprint
  21. Jianming Yang and Frederick Stern, A Sharp Interface Method for Two-Phase Flows Interacting with Moving Bodies, Proceedings of the 18th AIAA Computational Fluid Dynamics Conference, Miami, Florida, June 2007. AIAA-2007-4578
  22. Jianming Yang, Fred Stern, Large-Eddy Simulation of Breaking Waves Using Embedded-Boundary/Level-Set Method, 45th AIAA Aerospace Sciences Meeting and Exhibit, 8 - 11 January 2007, Reno, Nevada. AIAA-2007-1455
  23. Fred Stern, Juntao Huang, Pablo Carrica, Jianming Yang, Surajeet Ghosh, and Suak-Ho Van, Two-Phase CFD and PIV EFD for Plunging Breaking Waves, Including Alternative CFD approaches and Extensions for Air/Water Ship Flow, Proceedings of the 26th Symposium on Naval Hydrodynamics, Rome, Italy, September 2006. preprint
  24. Jianming Yang, Sergio Preidikman, and Elias Balaras, A Strong Coupling Scheme for Fluid-Structure Interaction Problems with Dynamically Moving Boundaries in Viscous Incompressible Flows, VIII Argentinian Congress on Computational Mechanics, MECOM 2005, Buenos Aires, Argentina, November 2005. preprint
  25. Jianming Yang, Sergio Preidikman, and Elias Balaras, Large-Eddy Simulations of Fluid-Structure Interaction Problems, Proceedings of the Third M.I.T. Conference on Computational Fluid and Solid Mechanics, Massachusetts Institute of Technology, Cambridge, Massachusetts, June 2005. preprint
  26. Jianming Yang, Sergio Preidikman, and Elias Balaras, A Strong Coupling Scheme for Fluid-Structure Interactions Problems in Viscous Incompressible Flows, Proceedings of the Conference on Computational Methods for Coupled Problems in Science and Engineering - COUPLED PROBLEMS 2005, Santorini Island, Greece, May 2005. preprint
  27. Jianming Yang and Elias Balaras, Parallel Large-Eddy Simulations of Turbulent Flows with Complex Moving Boundaries on Fixed Cartesian Grids, Proceedings of the International Conference on Parallel Computational Fluid Dynamics 2005, University of Maryland, College Park, May 2005. preprint
  28. Elias Balaras and Jianming Yang, Non-Boundary Conforming Methods for Large-Eddy Simulations of Biological Flows, HT-FED2004-56350, Proceedings of 2004 ASME Heat Transfer/Fluids Engineering Summer Conference, Charlotte, North Carolina, July 2004. preprint

Workshop

  1. Seong Mo Yeon, Jianming Yang, Frederick Stern, Drag Crisis on a Circular Cylinder in Single-Phase Flow with LES, ITTC Workshop on Wave Run-up and Vortex Shedding, October 17-18, 2013, Nantes, France.
  2. Sung-Hwan Yoon, Dong-Hwan Kim, Hamid Sadat-Hosseini, Jianming Yang, Frederick Stern, High-Fidelity CFD Simulation of Wave Run-Up around Vertical Cylinders in Monochromatic Waves, ITTC Workshop on Wave Run-up and Vortex Shedding, October 17-18, 2013, Nantes, France.
  3. Shanti Bhushan, Thad Michael, Jianming Yang, Pablo Carrica, and Frederick Stern, Fixed sinkage and trim bare hull 5415 simulations using CFDShip-Iowa, Gothenburg 2010: A workshop on CFD in ship hydromechanics, Gothenburg, Sweden, 8-10 December 2010. preprint

Media

Zhaoyuan Wang, Jianming Yang, and Frederick Stern, High-fidelity simulations of bubble, droplet, and spray formation in breaking waves, DOD HPC Insights, Fall 2012, the Department of Defense High Performance Computing Modernization Program. preprint

Conference Presentations

  1. Jianming Yang, Zhaoyuan Wang, Sung-Hwan Yoon, and Frederick Stern, Numerical simulation of two-phase flows on general structured grids using a geometrical volume-of-fluid method, FEDSM2013-16480, Proceedings of the ASME 2013 Fluids Engineering Summer Meeting, July 7-11, 2013, Incline Village, Nevada, USA.
  2. Jianming Yang, Zhaoyuan Wang, Thad Michael, and Frederick Stern, High Fidelity Sharp-Interface Multiphase Flow Solvers for Breaking Waves, Cavitation and Fluid-Solid Interactions, Plenary Talk, The First International Conference on Numerical Methods in Multiphase Flows, June 12-14, 2012, The Pennsylvania State University, University Park, Pennsylvania.
  3. Zhaoyuan Wang, Jungsoo Suh, Jianming Yang, and Frederick Stern, Sharp Interface LES of Breaking Waves in Orthogonal Curvilinear Coordinates, The 64th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, November 2011, Baltimore, Maryland. Abstract
  4. Jianming Yang and Frederick Stern, A Simple and Efficient Parallel Implementation of the Fast Marching Method, The 64th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, November 2011, Baltimore, Maryland. Abstract
  5. Jianming Yang and Frederick Stern, A Simple and Efficient Sharp Interface Immersed Boundary Method for Fluid-Structure Interaction with Complex Rigid Bodies, The 63th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, November 2010, Long Beach, California. Abstract
  6. Jianming Yang and Frederick Stern, Efficient Simulation of Fully Coupled Wave-Body Interactions on a Cartesian Grid, The 62th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, November 2009, Minneapolis, Minnesota. Abstract
  7. Jianming Yang and Frederick Stern, Sharp Interface Immersed-Boundary/Level-Set Cartesian Grid Method for Large-Eddy Simulation of Two-Phase Flows with Surface-Piercing Moving Bodies, The 60th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, November 2007, Salt Lake City, Utah. Abstract
  8. Jianming Yang and Elias Balaras, An embedded boundary formulation for fluid structure interactions of elastically mounted rigid bodies, The 58th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, November 2005, Chicago, Illinois. Abstract
  9. Jianming Yang and Elias Balaras, An Immersed-Sharp-Interface Method for Large-Eddy Simulation of Complex Flows with Moving Boundaries, The 57th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, November 2004, Seattle, Washington. Abstract

PhD Dissertation

  1. Jianming Yang, An Embedded Boundary Formulation for Large-Eddy Simulation of Turbulent Flows Interacting with Moving Boundaries, Department of Mechanical Engineering, University of Maryland, College Park, Maryland, USA, 2005. PDF

Other Publications (in Chinese)

  1. Jianming Yang and Dingfang Li, Parallel Computing for Complex Flows (in Chinese), Hydro-Science and Engineering, No. 1, March 2002, pp. 19-24.
  2. Jianming Yang and Jianhua Wu, Numerical Simulation of Submerged Hydraulic Jump (in Chinese), Journal of Hydrodynamics, Ser. A, Vol. 16, No. 4, December 2001, pp. 405-411.
  3. Jianming Yang and Jianhua Wu, Numerical Modeling of the Scouring Process of Free Jet Using Moving Grids (in Chinese), Journal of Hydrodynamics, Ser. A, Vol. 16, No. 2, June 2001, pp. 156-161.
  4. Tongkang Tao, Yingjie Hou, Lin Feng, Jun Yan, and Jianming Yang, Development of Geotextile Sandbags with High Friction Coefficient (in Chinese), Hydro-Science and Engineering, No. 1, March 2001, pp. 68-72.
  5. Jianming Yang and Jianhua Wu, Numerical Modeling of Turbulent Flow Using k-omega Turbulence Model (in Chinese), in Nature, Industries, and Flows, Proceedings of the 6th National Conference of Fluid Mechanics, Shanghai, China, March 2001, edited by Jiachun Li, (Beijing, China Meteorological Press), pp. 107-112.
  6. Jianming Yang, Parallel Computing for Complex Turbulent Flows Using PC Cluster (in Chinese), Technical Report, Nanjing Hydraulic Research Institute, Nanjing, China, May 2001 (64 pages).
  7. Jianming Yang, Numerical Modeling of Complex Flows — An Implicit Finite Volume Method with Colocated Variable Arrangement and Its Applications (in Chinese), Master's Thesis, Nanjing Hydraulic Research Institute, Nanjing, China, 1999.

Copyright © 2013, Jianming Yang

Last updated Monday, June 10, 2013