Flow Accelerated Corrosion
Flow accelerated corrosion is a significant problem in aging power plant piping systems. Our research involves accelerated testing using hydrocal pipe components under varying flow conditions, Reynolds numbers and pipe geometries to develop correlations for the wear rates and the locations of maximum wear. This work is sponsored by Atomic Energy of Canada Limited.
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Thesis Dissertations
Peer Reviewed Papers
- "The Effect of naturally Developing Roughness on the Mass Transfer in Pipes under Different Reynolds Numbers" D. Wang, D. Ewing, C.Y. Ching
- "Numerical Modeling of Flow Accelerated Corrosion in Consecutive Elbows" L. Sun, C.Y. Ching
- "Measurement of the flow field characteristics in single and dual s-shape 90 degree bends using matched refractive index PIV" H. Mazhar, D. Ewing, J.S. Cotton, C.Y. Ching
- "Time evolution of surface roughness in pipes due to mass transfer under different Reynolds numbers" D. Wang, D. Ewing, C.Y. Ching
- "Measurement of Local Mass Transfer and the Resulting Roughness in a Large Diameter S-Bend at High Reynolds Number" D. Wang, D. Ewing, T. Le, and C.Y. Ching
- "Effect of bend separation distance on the mass transfer in back-to-back pipe bends arranged in a 180° configuration" X. Chen, T. Le, D. Ewing, and C.Y. Ching
- "On the Non-Destructive Measurement of Local Mass Transfer using X-ray Computed Tomography" D. Wang, Y. Huang, D. Ewing, T. Chow, J.S. Cotton, M.D. Noseworthy and C.Y. Ching
- "Mass Transfer in S-Shape Dual Pipe Bends under Annular Two Phase Flow Conditions" H. Mazhar, J.S. Cotton, D. Ewing and C.Y. Ching
- "Mass Transfer in back to Back Elbows arranged in an Out of Plane Configuration under Annular Two Phase Flow Conditions" T. Le, D. Ewing and C.Y. Ching
- "The hydrodynamic effects of single-phase flow on flow accelerated corrosion in a 90-degree elbow", M. El-Gammal, H. Mazhar, J.S. Cotton, C. Shefski, J. Pietralik, C.Y. Ching
- "Investigation of wall mass transfer characteristics downstream of an orifice", M. El-Gammal, W.H. Ahmed, C.Y. Ching
- "Experimental investigation of mass transfer in 90° pipe bends using a dissolvable wall technique" H. Mazhar, D. Ewing, J.S. Cotton, C.Y. Ching
Microscale Thermal Management
This research focuses on cooling of small scale, high heat flux applications e.g. cooling of power electronics. Experimental research on the use of thermoelectric cooling systems and electrohydrodynamic micropumps are being investigated.
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Thesis Dissertations
Peer Reviewed Papers
- "Electrical Discharge Characteristics of a Dielectric Liquid under External Flow in a Microchannel with Planar Electrode Configuration", M.K. Russel, P.R. Selvaganapathy, C.Y. Ching
- "Effect of doping ferrocene in the working fluid of electrohydrodynamic (EHD) micropumps", M.K. Russel, S.M. Hasnain, P.R. Selvaganapathy, C.Y. Ching
- "Ion drag electrohydrodynamic (EHD) micro-pumps under a pulsed voltage", M.K. Russel, P.R. Selvaganapathy, C.Y. Ching
- "Numerical and Experimental Study of a Hybrid Thermoelectric Cooler Thermal Management System for Electronics Cooling", M.K. Russel, D. Ewing, C.Y. Ching
- "Characterization of a Thermoelectric Cooler Based Thermal Management System under Different Operating Conditions", M.K. Russel, D. Ewing, C.Y. Ching
- "A Hybrid Thermoelectric Cooler Thermal Management System for Electronic Packaging", M.K. Russel, D. Ewing, C.Y. Ching
- "Effect of electrode surface topology on charge injection characteristics in dielectric liquids: Am experimental study", M. K. Russel, P.R. Selvaganapathy, C.Y. Ching
- "Electrohydrodynamic Injection Micropump with Single Walled nanotube Electrodes", M.K. Russel, P. R. Selgavanapathy, C. Y. Ching
- “Effect of Micropillar Electrode Spacing on the Performance of Electrohydrodynamic Micropumps”, P. Zangeneh, P.R. Selvaganapathy, and C.Y. Ching
- “Effect of Electrode Asymmetry on Performance of Electrohydrodynamic Micropumps”, P. Zangeneh, P.R. Selvaganapathy, and C.Y. Ching
TEG POWER
The TEG POWER Project (Thermoelectric Generator Pizza Oven Waste Energy Recovery) focuses on exhaust gas energy harvesting using thermoelectric generators to generate electricity and thermal energy storage optimization. It is a multi-faceted project involving manufacturing and characterization of TEG assemblies, modeling and optimization and design of the system at the component level, modeling and optimization of the application at the system level and implementation with our client, Pizza Pizza.
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Thesis Dissertations
Phase Change Thermal Storage
This research focuses on the analysis and optimization of latent heat, phase change thermal storage systems for waste heat recovery and peak demand management applications. We investigate pure phase change processes coupled with electrohydrodynamics to enhance the melting and solidification processes. We are also looking at hybrid sensible and latent designs as well as modeling cascaded phase change energy storage systems.
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Thesis Dissertations
Peer Reviewed Papers
- "Melting performance enhancement in latent heat storage module using solid extraction electrohydrodynamics (EHD)", D. Nakhla, H. Sadek, J.S. Cotton
- "Numerical Investigation and Nondimensional Analysis of the Dynamic Performance of a Thermal Energy Storage System Containing Phase Change Materials and Liquid Water", HAM. Teamah, M.F. Lightstone, J.S. Cotton
EHD Heat Exchangers
This research focuses on electrohydrodynamics of two phase systems. This low power, active technique can be used to enhance and control the performance of boiling and condensing heat exchangers.
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Thesis Dissertations
Peer Reviewed Papers
- "A two-phase flow pattern map for annular channels under a DC applied voltage and the application to electrohydrodynamic convective boiling analysis", J.S. Cotton, A.J. Robinson, M. Shoukri, J.S. Chang
- "Effect of frequency on two-phase flow regimes under high-voltage AC electric fields”, H. Sadek, J.S. Cotton, C.Y. Ching, M. Shoukri
- "Electrohydrodynamic enhancement of in-tube convective condensation heat transfer”, H. Sadek, A.J. Robinson, J.S. Cotton, C.Y. Ching, M. Shoukri
- "The effect of pulsed electric fields on horizontal tube side convective condensation”, H. Sadek, C.Y. Ching, J.S. Cotton
- "Characterization of heat transfer modes of tube side convective condensation under the influence of an applied DC voltage”, H. Sadek, C.Y. Ching, J.S. Cotton
- "Transient Two-Phase Flow Patterns by Application of a High Voltage Pulse Width Modulated Signal and the Effect on Condensation Heat Transfer" K. Ng, C.Y. Ching, J.S. Cotton
- "The Influence of the Electrophoretic and Polarization Forces on Two Phase Flow Redistribution in a Horizontal Annular Tube", S Nangle-Smith, H Sadek, J.S. Cotton
- "EHD-based load controllers for R134a convective boiling heat exchangers”, S. Nangle-Smith, J.S. Cotton
- "Numerical Modeling of EHD-Induced Liquid Extraction in a Cylindrical Electrode Configuration”, S. Nangle-Smith, H. Sadek, C.Y. Ching, J.S. Cotton
Special Application of Thermal Management
This research focuses on waste heat recovery systems for selected research applications such as automobiles & electric motor cooling systems and high end manufacturing processes. Our automotive thermal management research is in partnership with MacAUTO.
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