Xiao-dong Shan

Master student (2011-2013) Research Associate (2012-2013) Department of Engineering Mechanics Tsinghua University E-mail: shanxd06/at/gmail.com

Education

n 2010-2013 M.S. (with honor) Dept. Engineering Mechanics, Tsinghua University

Ø Thesis: Non-Fourier heat conduction at micro/nano scale based on thermon gas model

Ø Supervisor: Professor Moran Wang

n 2006-2010 B.S. Dept. Engineering Mechanics, Tsinghua University

Ø GPA: 88/100

Ø Thesis: Geometry optimization of transport network

Research interests

n Gas flow and heat transfer at micro/nanoscale

n Non-Fourier heat conduction

n Monte Carlo simulations (DSMC, GEMC)

Honors and awards

n 2013 Distinguished Master’s Dissertation of Tsinghua University

n 2012 National Award for Graduate Students

n 2009 National Endeavor Scholarship

n 2008 National Endeavor Scholarship

n 2008 The National Aeronautics and Space Model (research category) Championship

n 2007 Regional College Students Physics Competition, Second Prize

Publications

1. X. D. Shan, M. Wang, Z. Y. Guo, Geometry optimization of self-similar transport network. Mathematical Problems in Engineering, 2011: 421526, 2011. (SCI)

2. M. Wang, X. Shan, N. Yang. Understanding length dependence of effective thermal conductivity of nanowire. Physics Letters A, 376(46): 3514-3517, 2012. (SCI)

3. X. D. Shan, M. Wang. Effective resistance of gas flow in micro channels. Advances in Mechanical Engineering, 2013: 950681, 2013. (SCI)

4. X. D. Shan, M. Wang. Understanding of thermal conductance of thin gas layers. Advances in Mechanical Engineering, 2013: 692842, 2013. (SCI)

5. X. D. Shan, M. Wang. Scale effect on thermal conductivity of gas layer around a micro cylinder. Journal of Engineering Thermophysics, 34(11), 2013. (in Chinese)

6. X. D. Shan, M. Wang. Discussion of subsonic choked gas flows in microchannels. Physics of Gases- Theory and Applications, 8(3): 18-22, 2013. (in Chinese)

7. X. D. Shan, M. Wang. Analysis of thermal rectification of nano-trapezoidal plates based on thermon gas model. Journal of Engineering Thermophysics. 35(7): 1401-1404, 2014 (in Chinese)

8. X. D. Shan, M. Wang *. On mechanisms of chocked gas flows in microchannels. Physics Letters A 379: 2351-2356, 2015 (SCI)

In Conferences

☺ X. D. Shan and M. Wang*. Numerical simulations of subsonic choked gas flow in microchannels. The 8^th International Symposium on Heat Transfer, Beijing, October 21-24, 2012.

☺ X. Shan and M. Wang*. NUMERICAL STUDY OF SUBSONIC CHOKED GAS FLOWS IN MICROCHANNELS, the 7^th National Conference of Fluid Mechanics, Guilin, 2012 (CSTAM 2012-B03-0202) (In Chinese)

☺ X. D. Shan and M. Wang*. Scale effect of thermal conductivity in micro gas layer. (in Chinese) 2012 NCTP-HT, Dongguan, 2012.(In Chinese)

☺ X. D. Shan and M. Wang*. Mechanism of thermal rectification of nano-trapezoidal plates base on Thermomass Theory. (in Chinese) 2013 NCTP-HT, Chongqing, 2013.

Research Experience

n Graduate period (2010- Now)

In this period, I major in theoretical and numerical studies of gaseous flows and heat transfer at micro/nanoscale on four aspects listed as follows.

Ø Effective resistance of gas flow in microchannels

ü Contributions: (1) the effective resistance is enhanced by the wall interactions, increases exponentially as the walls distance decreases; (2) ends effect from both inlet and outlet also raises the effective resistance of gas flow in microchannels following a reciprocal exponential relationship with the aspect ratio of length to height; (3) the formulation of effective resistance can be used to correct the thermal resistance in the general law of heat conduction.

Ø Scale effect of thermal conductance in gas thin layers

ü Contributions: the temperature jump and the heat inertia have effect on scale effect of heat conduction of microchannel, but the decreased mean free path of gas molecules by the confined space between walls may be the dominating factor to the reduction of thermal conductivity of gas thin layers

Ø Mechanism of gas flow subsonic choking phenomenon of long microchannel

ü Contributions: subsonic choked flow phenomenon may appear at certain ratio of inlet and outlet pressure no matter there is sonic point at the end or not, and it is flow resistance that leads to the subsonic choked gas flow.

Ø Monte Carlo modeling of gaseous chemical reaction (current work)

ü Objectives: to develop new algorithm of Monte Carlo method for gas chemical reaction and try to reveal the mechanism of growth of grapheme.

n Undergraduate period (2006-2010)

Ø Student Research Training (SRT) project of Tsinghua University

² New Concept of Lunar Vehicle and Design (2007)

² Design, Production and Handling of Van der Waals Nano electromechanical Device (2009)

ü Main work: Do some experiments pushing the graphite layers to slide with each other in order to snatch the phenomenon of ultra-high vibration of graphite layer, and make some theoretical analysis of resonance of a nanowire cantilever beam.

ü Supervisor: Prof. Quan-shui Zheng

Ø Individual Laboratory project of summer vacation

² Design and production of aircraft model (2008)

ü Contribution: applied to participate in National Aeronautics and Space Model (academic) Championship as one of three aircrafts model.

ü Supervisor: Assistant professor Dong-yun Ge

Ø Graduate project of undergraduate

² Minimum entransy dissipation principle for self-similar transport network (2010)

ü Conclusions: We obtain optimal relationships of geometric parameters of T-shape networks for fluid flow, heat conduction, convective heat transfer, and other transport phenomena.

ü Supervisor: Prof. Moran Wang