Dr Nian-Sheng Cheng

程年生 博士

 

Associate Professor

Division of Environmental and Water Resources Engineering

School of Civil and Environmental Engineering

Nanyang Technological University (南洋理工大学)

Singapore 639798

Email: cnscheng@ntu.edu.sg

 

 

Research Interests

Sediment transport, Hydraulics, Turbulence

 

Awards and Prizes

(1)   Scientific and Technological Achievement (Second Class, 1992), Ministry of Transportation, China

(2)   The 2005 Karl Emil Hilgard Hydraulic Prize, American Society of Civil Engineers (ASCE)

 

Publications

(Please contact Dr Cheng at cnscheng@ntu.edu.sg if you’d like to have e-copies of the following publications)

 

Journal Articles

Under review

1.      Cheng, N. S. (2012). “Calculation of drag coefficient for cylinder-simulated emergent vegetation with pseudo-fluid model.” Journal of Hydraulic Engineering, ASCE.

2.      Nguyen, B. T. and Cheng, N. S. (2011). “A single-camera technique for simultaneous measurement of large solid particles transported in rapid shallow channel flows.” Experiments in Fluids. 

2012

3.      Cheng, N. S., Nguyen, H. T., Tan, S. K., and Shao, S. (2012). “Scaling of velocity profiles for depth-limited open channel flows over submerged rigid vegetation.” Journal of Hydraulic Engineering, ASCE.

4.      Nguyen, B. T. and Cheng, N. S. (2012). “Flow resistance in smooth rectangular open-channels with low aspect ratios.” Journal of Hydraulic Engineering, ASCE.

5.      Pu, J. H., Cheng, N. S., Tan, S. K. and Shao, S. (2012). “Source term treatment of SWEs using surface gradient upwind method.” Journal of Hydraulic Research, DOI:10.1080/00221686.2011.649838

6.      Cheng, N. S. (2012). “Scaling law for velocity profiles of surface granular flows observed in rotating cylinders.” Powder Technology. 218(March), 11-17.

7.      Cheng, N. S., and Tang, X. (2012). “Closure to ‘Evaluation of flow resistance in smooth rectangular open-channels’.” Journal of Hydraulic Engineering, ASCE.

2011

8.      Cheng, N. S. (2011). “Representative roughness height of submerged vegetation.” Water Resources Research. 47, W08517, doi:10.1029/2011WR010590.

9.      Cheng, N. S. (2011). “Revisited Vanoni-Brooks sidewall correction.” International Journal of Sediment Research. 26(4), 524-528.

10.   Cheng, N. S. (2011). “Wall effect on pressure drop in packed beds.” Powder Technology, 210(3), 261-266.

11.   Cheng, N. S., Zhou, Q., Tan, S. K., and Zhao, K. (2011). “Application of incomplete similarity theory for estimating maximum shear layer thickness of granular flows in rotating drums.” Chemical Engineering Science, 66(12), 2872-2878.

2010

12.   Cheng, N. S., Nguyen, H. T., Zhao, K., Tang, X. (2010). “Evaluation of flow resistance in smooth rectangular open-channels.” Journal of Hydraulic Engineering, ASCE, 137(4). doi:10.1061/(ASCE)HY.1943-7900.0000322

13.   Cheng, N. S. and Nguyen, H. T. (2010). “Hydraulic radius for evaluating resistance induced by simulated emergent vegetation in open channel flows.” Journal of Hydraulic Engineering, ASCE. doi:10.1061/(ASCE)HY.1943-7900.0000377

14.   Cheng, N. S. (2009). “Application of incomplete similarity theory for predicting bed-material load discharge.” Journal of Hydraulic Engineering, ASCE. doi:10.1061/(ASCE)HY.1943-7900.0000375

2009

15.   Cheng, N. S. (2009). “Comparison of formulas for drag coefficient and settling velocity of spherical particles.” Powder Technology, 189(3), 395-398.

16.   Zhou, Q., and Cheng, N. S. (2009). “Experimental investigation of single particle settling in turbulence generated by oscillating grid.” Chemical Engineering Journal, 149(1-3), 289-300.

2008

17.   Cheng, N. S., Hao, Z. Y., and Tan, S. K. (2008). “Comparison of quadratic and power law for nonlinear flow through porous media.” Experimental Thermal Fluid Science, 32(8), 1538-1547.

18.   Cheng, N. S. (2008). “Formula for viscosity of glycerol-water mixture.” Industrial and Engineering Chemistry Research, 47, 3285-3288.

19.   Cheng, N. S. (2008). “Comparison of settling-velocity based formulas for threshold of sediment motion.” Journal of Hydraulic Engineering, ASCE, 134(8), 1136-1141.

20.   Cheng, N. S. (2008). “Formulas for friction factor in transitional regions.” Journal of Hydraulic Engineering, ASCE, 134(9), 1357-1362.

21.   Lu, Y., Chiew, Y. M., and Cheng, N. S. (2008). “Review of seepage effects on turbulent open-channel flow and sediment transport.” Journal of Hydraulic Research, IAHR, 46(4), 476-488.

22.   Wang, Z. Q., and Cheng, N. S. (2008). “Influence of secondary flows on distribution of suspended sediment concentration.” Journal of Hydraulic Research, IAHR, 46(4), 548-552.

23.   Wang, Z. Q., Tan, S. K., Cheng, N. S., and Goh, K. W. (2008). “A simple relationship for crenulate-shaped bays in static equilibrium.” Coastal Engineering, 55, 73-78

2007

24.   Cheng, N. S. (2007). “Power-law index for velocity profiles in open channel flows.” Advances in Water Resources, 30(8), 1775-1784.

25.   Yan, J., Cheng, N. S., Tang, H. W., and Tan, S. K. (2007). “Oscillating-grid turbulence and its applications: a review.” Journal of Hydraulic Research, IAHR, 45(1), 26-32. 

2006

26.   Cheng, N. S. (2006). “Influence of shear stress fluctuation on bed particle instability.” Physics of Fluids. 18 (9): Art. No. 096602.

27.   Wang, Z. Q., and Cheng, N. S. (2006). “Time-mean structure of secondary flows in open channel with longitudinal bedforms.” Advances in Water Resources, 29(11), 1634-1649.

2005

28.   Cheng, N. S. and Chua, L. H. C. (2005). “Comparisons of sidewall correction of bed shear stress.” Journal of Hydraulic Engineering, ASCE, 131(7), 605-609.

29.   Dey, S. and Cheng, N. S. (2005). “Reynolds stress in open channel flow with upward seepage.” Journal of Engineering Mechanics, ASCE, 131(4), 451-457.

30.   Wang, Z. Q., and Cheng, N. S. (2005). “Secondary flows over artificial bed strips.” Advances in Water Resources. 28(5), 441-450.

31.   Jiang, J., Law, A. W. K., and Cheng, N. S. (2005). “Two-phase analysis of vertical sediment-laden jets.” Journal of Engineering Mechanics, ASCE, 131(3), 308-318.

2004

32.   Cheng, N. S. (2004). “Analysis of bedload transport in laminar flows.” Advances in Water Resources, 27(9), 937-942.

33.   Cheng, N. S. (2004). “Closure to ‘Exponential formula for bedload transport’.” Journal of Hydraulic Engineering, ASCE, 130(5), 474.

34.   Cheng, N. S., Tang, T., and Zhu, L. (2004). “Evaluation of bedload transport subject to high shear stress fluctuations.” Water Resources Research, 40, W05601, doi:10.1029/2003WR003001.

35.   Cheng, N. S. (2004). “Analysis of velocity lag in sediment-laden open channel flows.” Journal of Hydraulic Engineering, ASCE, 130(7), 657–666.

36.   Jiang J., Law, A. W. K. and Cheng, N. S. (2004). “Two-phase modeling of suspended sediment distribution in open channel flows.” Journal of Hydraulic Research, IAHR, 42(3), 273–281.

37.   Zhu, L., Wang, J., Cheng, N. S., Ying, Q., and Zhang, D. (2004). “Settling distance and incipient motion of sandbags in open channel flows.” Journal of Waterway, Port, Coastal and Ocean Engineering, ASCE, 130(2), 98-103.

2003

38.   Cheng N. S., Law, A. W. K. and Lo, E. Y. M. (2003). “Transcritical flow over a moderately curved bed with lateral contraction.” Journal of Hydraulic Research, IAHR, 41(6), 631-637.

39.   Cheng, N. S., Sumer, B. M., and Fredsøe, J. (2003). “Investigation of bed shear stresses subject to external turbulence.” International Journal of Heat and Fluid Flow, 24(6), 816-824.

40.   Cheng, N. S. (2003). “A diffusive model for evaluating thickness of bedload layer.” Advances in Water Resources. 26(8), 875-882.

41.   Sumer, B. M., Chua, L. H. C., Cheng, N. S., and Fredsøe, J. (2003). “Influence of turbulence on bed load sediment transport.” Journal of Hydraulic Engineering, ASCE, 129(8), 585-596.

42.   Cheng, N. S. (2003). “Application of Ergun equation to computation of critical shear velocity subject to seepage.” Journal of Irrigation and Drainage Engineering, ASCE. 129(4), 278-283.

43.   Cheng, N. S. (2003). “Discussion of two-phase flow analysis of concentration profiles.” Journal of Hydraulic Engineering, ASCE, 129(3), 245-246.

44.   Cheng, N. S., Law, A. W. K., and Lim, S. Y. (2003). “Probability distribution of bed particle instability.” Advances in Water Resources. 26(4), 427-433.

45.   Cheng, N. S., and Law, A. W. K. (2003). “Fluctuations of turbulent bed shear stress.” Journal of Engineering Mechanics, ASCE, 129(1), 126-130.

46.   Cheng, N. S., and Law, A. W. K. (2003). “Exponential formula for computing effective viscosity.” Powder Technology. 129(1-3), 156– 160.

2002

47.   Cheng, N. S. (2002). “Exponential formula for bedload transport.” Journal of Hydraulic Engineering, ASCE, 128(10), 942-946.

2001

48.   Cheng, N. S. (2001). “Discussion of the fall velocity equation.” Journal of Waterway, Port, Coastal and Ocean Engineering, ASCE, 127(4), 250-251.

49.   Cheng, N. S., and Law, A. W. K. (2001). "Measurements of turbulence generated by oscillating grid." Journal of Hydraulic Engineering, ASCE, 127(3), 201-208.

2000

50.   Cheng, N. S., Law, A. W. K., and Findikakis, A. N. (2000). "Oil transport in surf zone." Journal of Hydraulic Engineering, ASCE, 126(11), 803-809.

51.   Cheng N. S., and Chiew Y. M. (2000). “Discussion of Incipient sediment motion with upward seepage.” Journal of Hydraulic Research, IAHR, 38(6), 475-477.

1999

52.   Cheng, N. S., and Chiew Y. M. (1999). “Closure to pick-up probability for sediment entrainment.” Journal of Hydraulic Engineering, ASCE, 125(7), 789.

53.   Cheng, N. S., and Chiew, Y. M. (1999). "Incipient sediment motion with upward seepage." Journal of Hydraulic Research, IAHR. 37(5), 665-681.

54.   Lim S.Y., and Cheng, N. S. (1999). “Closure to ‘Prediction of live-bed scour at bridge abutments’.” Journal of Hydraulic Engineering, ASCE, 125(9): 986-986.

55.   Cheng, N. S., and Chiew, Y. M. (1999). "Analysis of initiation of sediment suspension from bed-load." Journal of Hydraulic Engineering, ASCE. 125(8), 855-861.

56.   Cheng, N. S. (1999). “Closure to ‘Effect of concentration on settling velocity of sediment particles’.” Journal of Hydraulic Engineering, ASCE, 125(3), 317-317.

1998

57.   Cheng, N. S., and Chiew, Y. M. (1998). "Modified logarithmic law for velocity distribution subjected to upward seepage." Journal of Hydraulic Engineering, ASCE, 124(12), 1235-1241.

58.   Cheng, N. S., and Chiew, Y. M. (1998). "Turbulent open-channel flow with upward seepage." Journal of Hydraulic Research, IAHR, 36(3), 415-431.

59.   Lim, S. Y., and Cheng, N. S. (1998). "Prediction of live-bed scour at bridge abutments." Journal of Hydraulic Engineering, ASCE, 124(6), 635-638.

60.   Lim, S. Y., and Cheng, N. S. (1998). "Scouring in long contractions." Journal of Irrigation & Drainage Engineering, ASCE, 124(5), 258-261.

61.   Cheng, N. S. (1998). “Closure to simplified settling velocity formula for sediment particle.” Journal of Hydraulic Engineering, ASCE, 124 (6), 655-655.

62.   Cheng, N. S., and Chiew, Y. M. (1998). "Pick-up probability for sediment entrainment." Journal of Hydraulic Engineering, ASCE, 124(2), 232-235.

1997

63.   Cheng, N. S. (1997). "Effect of concentration on settling velocity of sediment particle." Journal of Hydraulic Engineering, ASCE, 123(8), 728-731.

64.   Cheng, N. S. (1997). "A simplified settling velocity formula for sediment particle." Journal of Hydraulic Engineering, ASCE, 123(2), 149-152.

1984-1996

65.   Cheng, N. S., and Zhu, L. J. (1993). "Critical condition for initiation of suspension." International Journal of Sediment Research, 8(3), 51-69.

66.   Cheng, N. S. (1994). "On nonequilibrium transport equation of bedload." Journal of Sediment Research, No.1, 78-84. (in Chinese)

67.   Cheng, N. S. (1993). "Calculation of angle of repose for submerged sediment particles." Technical Information on Water Resources, No.4, 44-51. (in Chinese)

68.   Cheng, N. S., and Zhu, L. J. (1993). "Application of exchanging rates of near-bed sediment to suspended sediment transport." Advances in Water Resources, 4(4), 274-279. (in Chinese)

69.   Cheng, N. S. (1993). "Application of theory of minimum energy and dissipation to evaluation of roughness." Journal of Huaihe Science and Tech., No.2, 1-3. (in Chinese)

70.   Cheng, N. S., and Cao, M. X. (1992). "Velocity ridges in rectangular open-channel flows." Journal of Hohai University, 20(1), 114-117. (in Chinese)

71.   Cheng, N. S., and Cao, M. X. (1991). "Experimental study of reasonable spacing of spurdikes." Journal of Port and Waterway Engineering, No.4, 28-31. (in Chinese)

72.   Cheng, N. S., and Li, C. H. (1991). "Experimental study of flows around a spurdike with sideslopes." Journal of NHRI, No. 2, 124-132. (in Chinese)

73.   Cheng, N. S. (1990). "Simularity in scale models of water quality." Journal of Waterways and Harbour Engineering, No. 3, 41-43. (in Chinese)

74.   Cheng, N. S., and Li, C. H. (1989). "Numerical predication of the flow around a spurdike with k-epsilon turbulence model." Journal of NHRI, No.3, 11-13. (in Chinese)

75.   Cheng, N. S. (1989). "Simplified calculation of hydraulic length of spurdikes." Jiangsu Hydraulic Science, No. 4, 6-8. (in Chinese)

76.   Cheng, N. S., and Li, C. H. (1987). "Studies on recirculating flows around spurdikes: A review." Technical Information on Water Resources, No. 3, 15-21. (in Chinese)

77.   Cheng, N. S. (1986). "Discussion of Einstein's bedload function." Journal of Sediment Research, No.3, 87-96. (in Chinese)

 

International Conference Papers

1.      Hao, Z., Cheng, N. S., and Tan, S. K. (2008). “Investigation of inertial effect in simplified porous media flow.” Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS, Tsinghua University Press, Vol. 1, 160-165.

2.      Zhou, Q. and Cheng, N. S. (2008). “Simultaneous measurements of particle settling velocity and oscillating-grid turbulence.” Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS, Tsinghua University Press, Vol. 3, 913-918.

3.      Liu, T., Tang, H. and Cheng, N. S. (2008). “Longitudinal dispersion of particle motion over inclined rough plane.” Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS, Tsinghua University Press, Vol. 3, 924-927.

4.      Tang, L., Tang, H., Chen, H. and Cheng, N. S. (2008). “Statistical analysis of collision between saltation particle and bed surface.” Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS, Tsinghua University Press, Vol. 3, 849-853.

5.      Zhou, Q., and Cheng, N. S. "Particle settling behavior in turbulent flow generated by oscillating grid." 5th International Conference on Fluid Mechanics, Shanghai, China, 142-145.

6.      Cheng, N. S. (2004). “Elastic interpretation for sediment sheet flows.” 2nd International Conference on Scour and Erosion, Singapore.

7.      Cheng, N. S. (2004). “Effect of shear stress fluctuation on bedload transport.” 9th International Symposium on River Sedimentation. Yichang, China.

8.      Wang, Z. Q. and Cheng, N. S. (2004). “Measurement of cellular secondary flow over a longitudinal ridged bed.” 2nd International Conference on Scour and Erosion, Singapore.

9.      Qua, K. C., Wang, Z. Q. and Cheng, N. S. (2004). “Particle saltation along a slope.” 2nd International Conference on Scour and Erosion, Singapore.

10.    Wang, Z. Q. and Cheng, N. S. (2003). “Reynolds shear stress Distributions in open channel flows with cellular secondary motions.” International Conference Port and Maritime R&D and Technology, Singapore.

11.    Lu, Y., Chiew, Y. M. and Cheng, N. S. (2003). “Seepage effect on angle of repose of cohesionless sediments.” 30th IAHR Congress, Thessaloniki, Greece. Theme C, Vol. 1, 549-555.

12.    Wang, Z. Q., Cheng, N. S., Chiew, Y. M., and Chen, X. W. (2003). “Secondary flows in open channel with smooth and rough bed strips.” 30th IAHR Congress, Thessaloniki, Greece. Theme C, Vol. 1, 111-118.

13.    Cheng, N. S., and Tan, S. K. (2003). “Near-bed hydraulics: A summary of research activities in NTU.” Sino-Singapore Symposium on Environmental Protection Technologies and Environmental Hydraulics, Taipei, Taiwan. 1-8.

14.    Cheng, N. S., and Law, A. W. K. (2002). “Analytic model for determining effective viscosity.” Proc. 11th International Conference of Transport and Sedimentation of Solid Particles. J. Sobota and R. Verhoeven, ed., Gent, Belgium. 53-60.

15.    Cheng, N. S. (2002). “Bedload transport rates for low, moderate and high shear stresses.” RiverFlow 2002, Vol. 1. D. Bousmar and Y. Zech, ed., Louvain-la-Neuve, Belgium. 575-578.

16.    Jiang, J., Law, A. W. K., and Cheng, N. S. (2002). “Two-phase modeling of suspended sediment distribution in open channel.” RiverFlow 2002, D. Bousmar and Y. Zech, ed., Louvain-la-Neuve, Belgium.

17.    Law, A. W. K., Cheng, N. S., and Davidson, M. J. (2001). "Jet spreading in oscillating-grid turbulence." 3rd International Symposium Environmental Hydraulics, Arizona, USA.

18.    Cheng, N. S., Law, A. W. K., and Chiew, Y. M. (2001). "Turbulence effect on pickup probability." 8th International Symposium on River Sedimentation, Cairo, Eygpt.

19.    Cheng, N. S., and Law, A. W. K. (2000). "Decay of turbulence generated by oscillating grid." Stochastic Hydraulics 2000, Z. Y. Wang, ed., Beijing, China.

20.    Cheng, N. S., and Law, A. W. K. (1999). "Effect of nearshore currents on oil transport." Proc. 3rd International Symposium on Ecohydraulics, Utah, July, 1999.

21.    Sumer, B. M., and Cheng, N. S. (1999). "A random-walk model for pore pressure accumulation in marine soils." Proc. 9th International Congress of Offshore and Polar Engineering, Brest, France, Vol. 1, 521-528.

22.    Cheng, N. S., and Chiew, Y. M. (1996). "Bed shear stress in the presence of an upward seepage." Rivertech'96, Chicago, 539-546.

23.    Cheng, N. S., and Zhu, L. J. (1993). "Transforming probability and exchange rate of near-bed sediment particles." Advances in Hydro-Science and Engineering, S. Wang, ed., Vol.1, 709-714.

24.    Cheng, N. S., and Cao, M. X. (1992). "Plan arrangement of spurdikes in river regulation projects." Proc. International Symposium of Hydraulic Research in Nature and Laboratory, Wuhan, China, Vol.2, 166-171.

25.    Cheng, N. S., and Li, C. H. (1991). "Recirculating flow of a spurdikes with sideslopes." Study of Streams and Watersheds of High Hydraulic Irregularity, Proc. 24th IAHR Congress, Madrid, Spain, 581-588.

26.    Cheng, N. S. (1990). "Determination of the critical tractive force for noncohesive grains." Proc. 7th Congress APD-IAHR, Beijing, 255-260.

27.    Kong, X. B., and Cheng, N. S. (1990). "An experimental study on local head losses at spurdikes." Proc. 7th Congress APD-IAHR, Beijing, 273-278.

 

 

 

Presentation slides

 

1.      Initial sediment suspension

2.      Secondary flows induced by longitudinal bedforms

3.      Effect of shear stress fluctuation on sediment transport

4.      Drag coefficient

5.      Settling-velocity based criteria for incipient sediment motion