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New Tze How, Daniel


New Tze How, Daniel
Associate Professor
Tel: 6790 4443
Email: dthnew@ntu.edu.sg
Office: N3-02b-41 
   
Education
  • PhD (MechEng) National University of Singapore 2004
  • BEng (MechEng) (Hons) National University of Singapore 1998

Biography
T. H. New joined the School of Mechanical and Aerospace Engineering in 2010, after spending about 5 years at the University of Liverpool, UK as a Lecturer. He obtained his PhD degree from the National University of Singapore in 2004 and spent a post-doc stint at the University of Texas, Arlington between 2004 and 2005. He currently leads several Fluid Dynamics and Aerodynamics focused research projects at the recently established Flow Physics and Control Lab, where he specializes in flow visualization and particle-image velocimetry (time-resolved, tomographic and light-field based) techniques. His research has seen him collaborating with DSTL UK MoD, German Aerospace Centre (DLR), Shanghai Jiao Tong University, University of Strathclyde, University of Canterbury and University of South Africa, among others. Last but not least, his research has been kindly supported by UK EPSRC, The Royal Society, Helmholtz Association, China NSFC, MOE, MINDEF, DSO, MPA, EDB, University of Liverpool, NUS, NTU and various key industry partners.

Research
  • Interest:
    Vortex-rings; jets; modified lifting-surfaces; flow visualization; particle-image velocimetry
  • Projects:
    Novel non-intrusive measurements and simulations of supersonic flow and noise
    A collaborative effort between National University of Singapore and Shanghai Jiao Tong University, this research aims to develop experimental tools to measure supersonic flow fields via novel vision-based techniques and correlate to their aero-acoustic signatures. High-fidelity numerical codes will also be developed to better predict sources of supersonic aero-acoustic signatures, with a view to mitigate noise generation.
    [Aerospace]
    A novel single-camera volumetric flow measurement technique based on Light-Field photography
    This research seeks to develop a robust and flexible 3D particle-image velocimetry (PIV) system that requires only a single camera that captures full 3D information, particularly depth-of-field. By processing the captured images such that the depth-of-field information is accurately extracted, it will be possible to measure and reconstruct 3D velocity fields more simply and cost-effectively.
    [Aerospace]
    On the use of bio-inspired propellers to improve propulsive thrust and efficiency
    In this research, propellers are physically modified based on designs derived from Mother Nature, such that they can potentially produce higher thrust and efficiency. High-fidelity numerical simulations are currently underway to model the full 3D steady and unsteady flow fields to understand the impact of the modified propellers upon the fluid flow behaviour.
    [Thermo-Fluid & Energy]
    Aerodynamic performance of joined-wing single aisle aircrafts
    A research collaboration between NTU and German Aerospace Centre (DLR), a joint numerical and experimental study is currently on-going in terms of designing future civilian joined-wing aircraft, as well as predicting and validating their flight performance. A joined-wing aircraft is expected to be significantly more fuel-efficient than its conventional single-wing counterpart and this research seeks to explore the best configurations.
    [Aerospace]
    Study of aerodynamics of lifting surfaces with leading-edge protuberances
    In this joint collaboration between NTU and NUS, an experimental investigation is currently being conducted to evaluate possible benefits of imposing leading-edge protuberances on lifting-surfaces. By understanding the flow behaviour associated with different physical configurations, it may be possible to design modified lifting-surfaces that produces better aerodynamic performance.
    [Aerospace]
    A study on cement flow characteristics in air-slide conveyors and pneumatic delivery pipes for efficient marine and maritime engineering operations
    This research is a collaboration with MPA and Jurong Port Pte Ltd, whereby the behaviour of cement powder passage through air-slide conveyors and pneumatic pipes are evaluated experimentally. With a view to understand cement powder flow phenomenon through these flow delivery systems, it may be possible to improve their flow rates to increase productivity.
    [Aerospace]
    Vortex structures and dynamics of parallel and tandem jets-in-cross-flow
    This investigation looks at the interactions between twin jets-in-cross-flow arranged either in parallel or tandem configurations experimentally. The primary focus is to study the differences in the coherent structures, as compared to a classical single jet-in-cross-flow scenario. A better understanding will have significant impact upon implementation of multiple jets-in-cross-flow for mixing and thrust-vectoring purposes.
    [Aerospace]
    On the vortex structures and flow characteristics of jet impingement upon curved surfaces
    This study focuses upon the dynamics of the coherent jet shear layer structures after they impinged upon curved surface, as well as their interactions with the wall boundary layer under different curvature conditions. The aim is to understand the flow behavior such that insights into how heat may be transferred to or from curved surfaces more uniformly and effectively may be obtained.
    [Thermo-Fluid & Energy]
    Vortex-ring collisions with solid boundaries
    This experimental research probes the fundamental vortex dynamics associated with circular and noncircular vortex-rings colliding upon solid boundaries of different configurations. As most earlier work focused on collision between vortex-rings and flat surfaces, this research will shed some light on how more complex boundary geometries will lead to more intriguing dynamics.
    [Thermo-Fluid & Energy]
    Flow dynamics and characteristics of finite-length wavy cylinders
    This research looks into the flow behavior associated with finite-length wavy cylinders under unconfined and confined conditions, with a particular emphasis on the interference effects arising at the cylinder-wall junctions. Effects of wavelength and wave amplitude are studied to understand the generation of streamwise vortices that reduces the wake effects.
    [Thermo-Fluid & Energy]

Research Staff and Students under supervision

Research Staff
Name Title Email
Imran Halimi Bin Ibrahim Research Fellow IMRAN.I@ntu.edu.sg
Wei Zhaoyu Research Fellow WZHYU@ntu.edu.sg

PhD Students
Name Project
Teo Zhen Wei Alvin On the Design and Aerodynamic Performance of Joined-wing Aircrafts
Long Jiao Benjamin On The Vortex Structures and Flow Characteristics of Jet Impingement Upon Curved Surfaces
Zang Bin Vortex Structures and Dynamics of Parallel and Tandem Jets in Crossflow
Heng Jinliang On the Characteristics of Two-phase Gas-particle Flows in Channels and Pipes

Selected Publications
  • New T.H. and Yu S.C.M.  (2014) Vortex rings and jets: Recent developments in near-field developments.  In-Press, Springer Books
  • New T.H., Shi S. and Liu Y. (2014) On the flow behaviour of confined finite-length wavy cylinders.  In-Press, Journal of Fluids and Structures
  • New T.H., Chan Y.X., Koh G.C., Chung H.M. and Shi. S (2014) Effects of corrugated aerofoil surface features on flow separation control. AIAA Journal, Vol. 52, No. 1, pp. 206-211
  • Shi S. and New T.H. (2013) Some observations in the vortex-turning behaviour of inclined noncircular jets. Experiments in Fluids, Vol. 54, pp. 1614
  • New T.H., Shi S. and Liu. Y (2013) Cylinder-wall interference effects on finite-length wavy cylinders at subcritical Reynolds number flows. Experiments in Fluids, Vol. 54, pp. 1601
  • Shi S., New T.H. and Liu Y. (2013) Flapping dynamics of a low aspect-ratio energy-harvesting membrane immersed in a square cylinder wake. Experimental Thermal and Fluid Science, Vol. 46, pp. 151-161
  • Shi S., New T.H. and Liu Y. (2013) Improvements to time-series TR-PIV algorithms using historical displacement and displacement variation information. Flow Measurement and Instrumentation,Vol. 29, pp. 67-79
  • New T.H. and Tsioli E. (2011) An experimental study on the vortical structures and behaviour of jets issuing from inclined coaxial nozzles. Experiments in Fluids, Vol. 51, No. 4, pp 917-932
  • New T.H. and Tsovolos D. (2009) Influence of nozzle sharpness on the flow fields of V-notched nozzle jets. Physics of Fluids, Vol. 21, Issue 8, 084107, pp 1-18
  • New T.H. (2009) An experimental study on jets issuing from elliptic inclined nozzles. Experiments in Fluids, Vol. 46, Issue 6, pp 1139-1157

Teaching
  • Aerodynamics
  • Refrigeration Cycle Experiment
  • Design And Implementation Of Electrohydraulic Circuits
  • Aerospace Discovery Course
  • Introduction To Aerospace Engineering