Enakshi Wikramanayake

Enakshi D. Wikramanayake, Ph.D.

Associate
Thermal Sciences
Houston
  • CV (English)
  • Contact Card

Dr. Wikramanayake assists in the investigation and analyses of fires, explosions, and chemical process safety incidents. Her expertise stems from her mechanical engineering background focusing on thermal sciences, with extensive experience performing experimental research, modeling and simulation, microfabrication and machine learning. Dr. Wikramanayake has experience in the energy sector, where she modeled the use of waste natural gas for atmospheric water harvesting in order to reduce energy consumption and emissions. Dr. Wikramanayake also has experience in the semiconductor industry where she characterized chloride movement and contamination in products that lead to corrosion-based failures.

Prior to joining Exponent, Dr. Wikramanayake completed her Ph.D. in Mechanical Engineering at the University of Texas at Austin in the Thermal-fluids discipline. Her work focused on the experimentation and modelling of condensation under the effect of an electric field in order to enhance heat transfer. Her work introduced a novel method of controlling droplet shedding dynamics which has further applications in condensation, power generation, heat exchangers and self-cleaning surfaces. Through this work she has experience in designing and building experiments, large data analysis using tools such as MATLAB and Python, as well as using micro fabrication and analytical tools such as SEM, Profilometer, Rheometer, and using photolithography and chemical etching methods to pattern or structure surfaces. During her time at UT Austin, Dr. Wikramanayake served as the president of the Graduate Engineering Council, as well as directing the graduate engineering career fair. Through these positions she was able to create STEM activities for “Introduce a Girl to Engineering Day.” Dr. Wikramanayake has served as a reviewer and co-chair for several technical sessions of the Heat Transfer Theory and Fundamental Research committee of ASME (American Society for Mechanical Engineers) conferences.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering, University of Texas, Austin, 2020
  • M.S., Mechanical Engineering, University of Texas, Austin, 2017
  • B.S., Mechanical Engineering, University of Texas, Austin, 2015
  • Graduate Portfolio Program in Energy Studies, 2020

    Cockrell School of Engineering Student Leadership Award, 2019

    Philip C. and Linda L. Lewis Foundation Graduate Fellowship in Mechanical Engineering (2017-2018)

LANGUAGES

  • Sinhalese

Publications

Wikramanayake, E. D., Perry, J., & Bahadur, V. AC electrowetting promoted droplet shedding on hydrophobic surfaces. Applied Physics Letters 2020; 116: 193701.

Wikramanayake, E., & Bahadur, V. Statistical modeling of electrowetting-induced droplet coalescence for condensation applications. Colloids and Surfaces A: Physicochemical and Engineering Aspects 2020; 124874.

Wikramanayake, E., & Bahadur, V. Characterization of oscillation amplitude of contact angle during AC electrowetting of water droplets. Journal of Physics Communications 2020.

Wikramanayake, E. D., & Bahadur, V. Electrowetting-based enhancement of droplet growth dynamics and heat transfer during humid air condensation. International Journal of Heat and Mass Transfer 2019; 140: 260-268.

Lokanathan, M., Wikramanayake, E., & Bahadur, V. Scalably manufactured textured surfaces for controlling wettability in oil-water systems. Materials Research Express 2019; 6: 046507.

Wikramanayake, E. D., Ozkan, O., & Bahadur, V. Landfill gas-powered atmospheric water harvesting for oilfield operations in the United States. Energy 2017; 138: 647-658.

Ozkan, O., Wikramanayake, E. D., & Bahadur, V. Modeling humid air condensation in waste natural gas-powered atmospheric water harvesting systems. Applied Thermal Engineering 2017; 118: 224-232.

Wikramanayake, E. D., & Bahadur, V. Flared natural gas-based onsite atmospheric water harvesting (AWH) for oilfield operations. Environmental Research Letters 2016; 11: 034024.

Presentations

Mathew V., Wikramanayake, E., Chopin, S. Corrosion of Copper Wirebonded Packages by Chlorine Containing Foreign Particles. IEEE 70th Electronic Components and Technology Conference, 2020.

Wikramanayake, E., Bahadur, V. Electrowetting-Based Coalescence of Droplets During Dropwise Condensation of Humid Air. Proceedings of the ASME 2019 Heat Transfer Summer Conference, Bellevue, WA, 2019.

Bandyopadhyay, A., Ramirez-Meyers, K., Wikramanayake, E. D., Leibowicz, B. D., Webber, M. E., Bahadur, V. A Capacity Planning Model for Microgrids in Rural India. Proceedings of the ASME 2019 International Mechanical Engineering Congress and Exposition, Salt Lake City, UT, 2019.

Wikramanayake, E., Hale, R., Elam, J., Shahriari, A., Bahadur, V., Alvarez-Hernandez, A. R., Howard, N. Characterizing Microfluidic Operations Underlying an Electrowetting Heat Pipe on the International Space Station. Proceedings of the ASME 2018 International Mechanical Engineering Congress and Exposition, Pittsburgh, PA, 2018.

Lokanathan, M., Wikramanayake, E., Bahadur, V., & Bonnecaze, R. Dielectrophoretic control of a droplet at the interface of two liquids in a three liquid system. Proceedings of the ASME 2018 International Mechanical Engineering Congress and Exposition, Pittsburgh, PA, 2018.

Enakshi D. Wikramanayake; Vaibhav Bahadur, Electrowetting-based Rapid Coalescence and Growth of Droplets for Condensation Enhancement. Poster Presentation. The 11th International Conference on Electrowetting and Drop Dynamics on Functionalized Surfaces, Enschede, the Netherlands, 2018.

Wikramanayake, E., Ozkan, O., & Bahadur, V. Atmospheric Water Harvesting Systems for Utilization of Waste Natural Gas From Oilfields and Landfills. Proceedings of the ASME 2017 Heat Transfer Summer Conference, Bellevue, WA, 2017.

Wikramanayake, E., Bahadur, V. Landfill Gas Utilization for Water, Electricity and Food Production in Texas. Proceedings of the ASME 2016 International Mechanical Engineering Congress and Exposition, Phoenix, AZ, 2016

Patents

US Patent 14, 995, 063: Harvesting atmospheric water using natural gas that would typically be flared and waste, July 2016 (Bahadur, V., & Wikramanayake, E.).

Prior Experience

Engineering Intern, Materials Team, Global Packaging Innovation, NXP USA Inc., 2018

Laboratory Safety Coordinator, The University of Texas at Austin, 2017-2019

Professional Affiliations

American Society of Mechanical Engineers (ASME), member

National Fire Protection Association (NFPA), member

Project Experience

Conducted fundamental and application-based studies on the use of electric fields to enhance condensation for applications in thermal management and self-cleaning surfaces. Conducted microfluidic and heat transfer measurements associated with enhanced condensation. Developed analytical and numerical models to predict performance of enhanced condensers.

Identified solutions to enhance semiconductor package lifetime by impeding chlorine movement through epoxy mold compound. Studied chlorine diffusion through mold compound under various temperatures, voltages and moisture conditions. Developed analytical method to model semiconductor product lifetime.

Co-developed the concept of using waste natural gas from landfills/oilfields for atmospheric water harvesting (AWH), i.e. condensing and collecting water present in the atmosphere. Developed analytical models to predict water harvesting rates based on local temperature and humidity as well as technical and techno-economic performance of AWH systems.

Designed and built a microfluidic device for pumping droplets using electric fields for a demonstration on the International Space Station. Device design included surface wettability alteration and circuitry design. Device built is the basis for study microfluidics underlying an electrowetting heat pipe.

Knowledge

News & Events

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering, University of Texas, Austin, 2020
  • M.S., Mechanical Engineering, University of Texas, Austin, 2017
  • B.S., Mechanical Engineering, University of Texas, Austin, 2015
  • Graduate Portfolio Program in Energy Studies, 2020

    Cockrell School of Engineering Student Leadership Award, 2019

    Philip C. and Linda L. Lewis Foundation Graduate Fellowship in Mechanical Engineering (2017-2018)

LANGUAGES

  • Sinhalese