News

The SEA Lab was recently featured on the Cornell Engineering Instagram and YouTube page for our work on WEC prototypes and arrays! Video featuring Cecily Pokigo and Vidhi Srivastava who worked on the project over the summer. Check it out here!

PhD student Rebecca McCabe presents “Force-Limited Control of Wave Energy Converters using a Describing Function Linearization” at the International Federation of Automatic Control (IFAC) conference in Blacksburg, VA. Find a link to her paper here.

PhD student (now candidate) Olivia Vitale passed her admission to candidacy exam (A exam) in Aerospace Engineering. Her project focuses on the hydrodynamic modeling of wave energy converter arrays for various applications. Check out her problem formulation and current state of her PhD here (live recording of A exam).

The SEA Lab in recruiting undergraduates, MEng students, and masters students for the Fall 2024 semester. Check out all the available projects here.

PhD student (now candidate) Matt Haefner passed his admission for candidacy exam (A exam) in Systems Engineering. His project focuses on Integrated Pumped-Hydro Reverse Osmosis (IPHROS), a system for renewable energy storage and sea water desalination. Check out his problem formulation and current state of his PhD here (live recording of A exam).

PhD student (now candidate) Olivia Murphy passed her admission for candidacy exam (A exam) in Mechanical Engineering. Her project focuses on renewably powered offshore lithium and hydrogen extraction from sea water. Check out her systems architecture, problem formulation, and current state of research here (live recording of the A exam).

The University Marine Energy Research Community (UMERC) combined with the Marine Energy Technology Symposium (METS) hosted their 3rd annual marine renewable energy conference in Duluth, MN. Becca McCabe presented on a Matched Eigenfunction Expansion Method (MEEM) and CArbon Sequestration Harnessing Energy from Waves (CASHEW). Nate DeGeode presented on wave-powered desalination, and Olivia Vitale presented work on the wave sheltering properties of wave energy converters. Find more info on UMERC here.

The NOAA Sea Grant awards funding the the SEA Lab for a snail-inspired marine microplastic removal robot: MOLLUSCA. This project will develop a new bio-inspired marine robot that can be deployed in teams to efficiently remove microplastics from bodies of water. The robot will utilize interfacial pumping and integrate a novel impedance spectroscopy sensor to detect and remove microplastics. Check out the press release here.

The Marine Energy Collegiate Competition (MECC) funds teams from around the US to designing marine energy devices for Blue Economy applications. The SEA Lab plans to prototype a wave-driven desalination device, considering mechanical, chemical, economic, and social disciplines. The team will compete in spring 2025. Check out the news release here.

The prototyping team was awarded funding from the Department of Energy’s Testing and Expertise for Marine Energy (TEAMER) program. The team will conduct wave energy converter (WEC) farm experiments at Oregon State’s Directional Wave Basin. The experiments will test methods to increase power production and study far-field environmental effects of the WEC farm. This month-long campaign will be a collaboration between the SEA Lab and the O.H. Hinsdale Wave Research Laboratory. Read more here.

PhD student Kapil Khanal was selected for the highly competitive Argonne Training Program on Extreme-Scale Computing (ATPESC). ATPESC provides intensive, two weeks of training on the key skills, approaches, and tools to design, implement, and execute computational science and engineering applications on current high-end computing systems and the leadership-class computing systems of the future.

Undergraduates Aisha Brundan and Kavya Mittha and graduate students Nate DeGoede and Olivia Vitale are featured in the Cornell Chronicle for their work with wave energy converter (WEC) prototypes. The prototypes include a heaving point-absorber WEC and an oscillating surge WEC. The article highlights the tank testing of the newest SEA Lab prototype. Read more here.

Becca is the president of the Student Neurodiversity Alliance at Cornell and advocates for the Learning Strategies Center’s new sensory room. A sensory room is a space for all students to escape sensory overload. Check out the article here.

Graduate student Matthew Haefner published in Applied Energy on the Integrated Pumped Hydro Reverse Osmosis System (IPHROS). IPHROS is a system where fresh water production and energy storage are symbiotically coupled. The work was highlighted in the Cornell Chronicle, linked here.

SEA Lab members presented their research at the second annual University Marine Energy Research Community (UMERC) conference in Durham, New Hampshire, hosted by the Atlantic Marine Energy Center and the University of New Hampshire. Undergraduate student Gabriel Ewig presented work titled “Marine Spatial Planning for Siting Wave-Powered Aquaculture Farms,” graduate student Olivia Vitale presented work titled “Multi-objective multidisciplinary optimization of wave energy converter array configurations and controls,” and postdoctoral researcher Dr. Arezoo Hasankhani presented a poster titled “Wave-Powered Aquaculture Farm: Sustainable Source of Food and Power.”

SEA Lab members Leah Buccino, Annie Stewart, and Olivia Vitale presented their work at the 2023 Clean Energy, Education, and Empowerment (C3E) Initiative Symposium in Boston, MA. Undergraduate student Leah presented a poster titled “Power Consumption in an Offshore Aquaculture Farm,” undergraduate student Annie presented a poster titled “Development of a Wave-Powered Integrated Multi-Trophic Aquaculture Farm,” and graduate student Olivia presented a poster titled “Aquaculture, Wave Energy Converters, and Offshore Wind Turbines: A Co-Location Case Study.”

SEA Lab member Becca McCabe interned this summer at Infinite Cooling, a clean-tech startup in the Boston area which develops hardware to make industrial cooling more sustainable. In this profile, the Boston Globe highlights her career path as part of the new generation of climate innovators. Read the article here: “Climate tech is buzzing in Boston. Here are six young workers leading the way“

New SEA Lab research was published in Applied Energy. The paper, titled “Integrated Pumped Hydro Reverse Osmosis System Optimization Featuring Surrogate Model Development in Reverse Osmosis Modeling,” was led by PhD student Matthew Haefner. The paper details integrated multidisciplinary optimization of an Integrated Pumped Hydro Reverse Osmosis System (IPHROS) with surrogate models for the reverse osmosis system fractional salt rejection rate and permeate flow rate. Tradeoffs are explored between optimal IPHROS designs with respect to different objectives and it was found that a combined system such as IPHROS has a 16% faster break even time.

SEA Lab PhD students Becca McCabe and Olivia Vitale presented their research at the ASME IDETC-CIE conference in Boston, MA. Becca presented “System Level Techno-Economic and Environmental Design Optimization for Ocean Wave Energy” in the Design and Optimization of Energy Systems session. Olivia presented “Effects of Wave Energy Converter Array Configurations and Geometries on Wave Field and Power Output” in the Computational Methods and Software Tools in Multibody Systems and Nonlinear Dynamics session.

Arezoo presented a paper in the 33rd ISOPE, the International Society of Offshore and Polar Engineers, at Ottawa. The presented paper was on “Conceptual Design and Optimization of a Wave-Powered Offshore Aquaculture Farm”.

Arezoo presented a paper in the IEEE Oceans conference in Limerick, Ireland. The presented paper was on “Marine Spatial Planning of a Wave-Powered Offshore Aquaculture Farm in the Northeast U.S.”

Kapil presented the research on gradient based design optimization of concentric cylinders using matched eigenfunction method and multidisciplinary design optimization techniques. Kapil also chaired the session CP6 – Diverse Optimization Applications I.

Becca presented her research on techno-economic metrics and multidisciplinary design optimization of wave energy converters. The A-Exam marks admission to PhD candidacy. Her hour-long talk is recorded and publicly viewable at this link: https://vod.video.cornell.edu/media/Rebecca+McCabe+A+Exam+-+System-Level+Techno-Economic+Environmental+Design+Optimization+for+Ocean+Wave+Energy/1_71y6ip6w

SEA Lab undergraduate students (Temilola Omojola, Madison Dietrich, Ana Sofia Alonso Munera, Nelson Ooi, Alan Lui, and Andrea Miramontes Serrano) competed in the 2023 Marine Energy Collegiate Competition, hosted by the Department of Energy’s Water Power Technologies Office, with the capstone event being at the National Hydropower Association’s Waterpower Week Conference in Washington D.C. The team investigated the development of a wave energy converter to power offshore aquaculture farms. The team won first place for their report at the competition. Congratulations everyone!

SEA Lab PhD student Matt Haefner led a team of 6 students (Remy Vearil, Mary Conlan, Sanjar Kushaliev, Siva Visvesvaran, Gabriella Cabrara, and Isabel Mejía-Roberts) in the inaugural Hydropower Collegiate Competition, hosted by the Department of Energy’s Water Power Technologies Office, with the capstone event being at the National Hydropower Association’s Waterpower Week Conference in Washington D.C. The team investigated the technoeconomic feasibility of possibly converting the Castaic Power Plant into an IPHROS facility, and presented their findings at the conference. They also taught local middle schoolers about hydropower, and built a mini-PSH system to aid the teaching process.

The SEA Lab was awarded funding as a subcontract from Sandia National Laboratory for a new seedling project funded by the Department of Energy WPTO office. The project will seek to explore the differentiability of the hydrodynamic simulations.

SEA Lab PhD student Olivia Murphy attended SXSW with student entrepreneurs from Vanderbilt University and the National GEM consortium, where she did customer discovery on-site. She engaged with and learned valuable insight from dreamers, storytellers, innovators, and global innovators in the renewable energy space.

The Atkinson Center for Sustainability awarded funding to the SEA Lab to support a 10-week wave energy converter (WEC) prototyping project. Undergraduates Aisha Brundan (junior, mechanical) and Kavya Mittha (sophomore, mechanical) were selected to design, construct, and test a heaving point-absorber WEC. Their prototype will serve as a reference for future builds and be used in multibody experimental testing.

SEA Lab PhD student Olivia Murphy participated in a regional course hosted by the NSF I-Corps Northeast Interior Hub that prepared her to conduct customer discovery interviews and deliver presentations on her findings at the ARPA-E Summit.

New SEA Lab research was published in Applied Energy. The paper, titled “The power balancing benefits of wave energy converters in offshore wind-wave farms with energy storage,” shows that co-located a wind-wave farm has 15% smoother power, 6% less energy curtailment, and 2% higher power efficiency than a wind farm. It also shows that attaching a wave energy converter (WEC) to a wind turbine reduces WEC cost by 43%.

New SEA Lab research was published in the Journal of Field Robotics. The paper, titled “Autonomous control of a prototype solar-powered offshore autonomous underwater vehicle servicing platform via a low-cost embedded architecture,” was an outcome of Prof. Haji’s fellowship at MIT. The paper describes field tests of station-keeping and waypoint missions of a solar-powered autonomous marine surface robot. The robot was able to achieve an RMS tracking error of 0.9–2.2 m during waypoint pattern executions, with an average battery usage of 13% per hour.

Prof. Haji and the SEA Lab were awarded one of twenty Affinito-Stewart research grants from the President’s Council of Cornell Women (PCCW) to design and test a sensor-driven automated feed distribution system for offshore aquaculture farms. Learn more about the project and other awards from the Affinito-Stewart program that totaled $195,166.

We welcome new PhD students Olivia Vitale and Nate DeGoede to the SEA Lab this Fall 2022 semester! Visit the SEA Lab team page to learn more!

New SEA Lab research was published in Renewable Energy.  The paper, titled “Multi-objective optimization of hybrid renewable energy systems with urban building energy modeling for a prototypical coastal community,” was an outcome of the course 16.886 Multidisciplinary Design Optimization taught by Prof. Haji at MIT in Spring 2021. The paper combines urban building energy modeling with multidisciplinary multi-objective optimization to guide the development of a hybrid renewable energy grid. The results suggest that while different renewable energy system mixes can be viable, optimizing for cost, energy utilization, and power deficit can be increasingly challenging as higher annual demand hours (>90%) are met.

New SEA Lab research was published in Frontiers in Chemical Engineering. The paper, titled “A review of technologies for direct lithium extraction from low Li+ concentration aqueous solutions,” was led by PhD student Olivia Murphy.

SEA Lab PhD student, Kapil Khanal, presented his work on the Multidisciplinary Design Optimization for Novel Offshore Systems at NASA Glenn Research Center in Cleveland, OH on October 24-25, 2022 as part of the 2022 OpenMDAO Workshop

The SEA Lab took part in the 2022 Chemical Separations Gordon Research Conference from October 2-7, 2022 in Ventura, CA. PhD student Olivia Murphy presented a poster on “A Review of Technologies for Direct Lithium Extraction from Low Li+ Concentration Aqueous Solutions.”

The SEA Lab took part in the University Marine Energy Research Community (UMERC) and the Marine Energy Technology Symposium (METS) marine energy research conference from September 13-14, 2022 in Portland, OR. Prof. Haji gave the plenary talk titled “Unlocking the power of ocean energy: The need for standardization, and transfer of data and technology” and PhD student Rebecca McCabe presented on “Value Metrics and Global Impact Potential of Wave Energy.””

Cornell’s Sibley School of Mechanical and Aerospace Engineering has awarded SEA Lab PhD students Becca McCabe and Olivia Murphy with the Bart Conta Prize in Energy and Environment. This award recognizes the best work on a research or design project dealing with energy and the environment. Congratulations!

The SEA Lab is offering a number of research projects for undergraduate and MEng students in Fall 2022! Please email maha@cornell with interest by Thursday 9/1/22. For project descriptions, please see the COE/CIS project portal: ug-meng-projects.coecis.cornell.edu. Learn more about open positions on our Team Page as well.

The SEA Lab took part in the 2022 ASME International Design Engineering Technical Conferences & Computers and Information in Engineering Conference from August 14-17, 2022 in St. Louis, MO. PhD student Rebecca McCabe presented a new conference paper titled “Multidisciplinary Optimization to Reduce Cost and Power Variation of a Wave Energy Converter.”

We welcome Dr. Arezoo Hasankhani to the SEA Lab this summer! She joins the group as a postdoctoral researcher working on offshore energy system modeling and aquaculture after completing her PhD from Florida Atlantic University. Visit the SEA Lab team page to learn more!

We welcome new PhD student Kapil Khanal to the SEA Lab! Visit the SEA Lab team page to learn more!

Congratulations to SEA Lab members Ryan Cheng, Owais Khalid, and Ray Weng who graduated from Cornell University this spring! Ryan completed an MEng in Systems Engineering, Owais received an MEng in Chemical Engineering, and Ray completed his MEng degree in Computer Science.

Prof. Haji and the SEA Lab in collaboration with Prof. Wilson and the Wilson Research Group in the Department of Chemistry and Chemical Biology were awarded one of seven New Frontier Grants from the College of Arts and Sciences to develop techniques for extracting the mineral lithium – a critical component of batteries, wind turbines, smart phones and many other devices – from seawater. Learn more about the project and other awards from the New Frontier Grants program that totaled $1.25 million featured on the Cornell Chronicle.

Congratulations to SEA Lab member Rebecca McCabe on being awarded an NSF Graduate Research Fellowship! Rebecca is a PhD student in Mechanical and Aerospace Engineering working on the design of offshore wind and wave renewable energy systems.

The SEA Lab is hiring a postdoc in offshore energy modeling and mapping! If you are excited about marine renewable energy, aquaculture, and developing tools for multi-use marine activities then we’d like to hear from you! The position is for 2-years with a start date as early as February 1, 2022. Apply by January 15, 2022. Please see https://bit.ly/SEA_Cornell_postdoc22  for more details.

PhD student Matthew Haefner presented his research titled “Integrated Pumped Hydro Reverse Osmosis System Optimization with Enhanced Reverse Osmosis Modeling” at the 2021 International Conference on Applied Energy. Matthew discussed improvements he made for modeling the reverse osmosis desalination process in the IPHRO system and presented preliminary results of multi-objective optimization of the system to maximize both freshwater and renewable energy generation.

PhD student Rebecca McCabe traveled to Boston to participate in the MIT Energy Hackathon. This weekend-long intensive event connects students from diverse academic backgrounds with industry partners to solve problems critical to emissions reduction. Rebecca’s team, Good Vibes Energy, tackled the Chevron-sponsored challenge of ocean-based CO2 sequestration. The team investigated various chemical and biological mechanisms for marine carbon capture and presented a synthesized portfolio recommendation to Chevron, accounting for technology readiness, deployment feasibility, and environmental risks.

SEA Lab member Mumtaziah Faaz was recently featured by Cornell Material Science and Engineering. In the spotlight, she discusses her work in the lab on looking at ways to reduce biofouling on mineral extracting polymers. Check out her spotlight on the Cornell MSE website to read more.

We welcome a number of new students to the SEA Lab this Fall 2021 semester! Meet new PhD students Matthew Haefner, Rebecca McCabe, and Olivia Murphy, and new MEng students Ryan Cheng, Mumtaziah Faaz, and Owais Khalid. Visit the SEA Lab team page to learn more!

Prof. Maha Haji was recently featured by Cornell Engineering. In the spotlight, she discusses her path to ocean engineering and her goals for the SEA Lab at Cornell. Check out her spotlight on the Cornell Engineering website to read more about her journey to engineering and her goals for the lab.

Some of the latest results on the design and testing of the control system for Platform for Expanding AUV exploRation to Longer ranges (PEARL), an integrated autonomous floating servicing station that utilizes renewable energy to simultaneously provide AUV battery recharging and data uplink via new generation high-bandwidth low-Earth orbit satellite constellations, were presented at the OCEANS’21 conference. The paper titled ‘Autonomous Control of a Prototype Solar-powered Offshore AUV Servicing Platform’ is available for discussed the implementation of a low- cost autonomous control system consisting of off-the-shelf hardware components, built around an embedded Raspberry Pi microcomputer and Arduino microcontroller. The open-source MOOS-IvP marine robotics software was used to achieve autonomous operations, consisting of station-keeping and waypoint missions. You can download the paper from the conference website.

Prof. Haji presented work on the ‘Optimization of a symbiotic wind-wave-storage farm for cost and load matching’ at the 2021 MIT A + B Applied Energy Symposium. Her presentation discussed how wave energy converters coupled with offshore wind turbines could not only reduce fatigue stress on the overall structure, but also could reduce the need for energy storage for offshore farms, ultimately lowering costs. In this work, it was shown that as renewable energy penetration levels increase, the optimal storage energy capacity required to minimize curtailed power increases on the order of 5 hours, 40 hours, and 150 hours for renewable energy penetration levels of 50%, 75%, and 100% respectively. View a recording of her presentation.

Prof. Haji presented some of the work she has been doing on the Platform for Expanding AUV exploRation to Longer ranges (PEARL), an integrated autonomous floating servicing station that utilizes renewable energy to simultaneously provide AUV battery recharging and data uplink via new generation high-bandwidth low-Earth orbit satellite constellations, at the IEEE Geoscience and Remote Sensing Society.

Prof. Haji presented some of the ongoing work in the SEA Lab on designing symbiotic systems for passive seawater mineral extraction at the Ezra’s Round Table Systems Seminar. This presentation discussed how chemical adsorbents can be used to passively extract minerals from seawater. Symbiotic systems that integrate a mineral harvester with an existing offshore wind turbine have been shown to increase efficiency, reduce environmental impact, and decrease mineral production cost. This talk described the foregoing, and also present some promising initial work applying these design tools to minerals that are key to large-scale lithium-ion battery production, such as cobalt and lithium. The talk was recorded and is available to watch on the Cornell Systems Engineering YouTube page.

Matthew Haefner successfully completed all the requirements for the MEng degree in Mechanical Engineering and graduated from the program in December 2020. Congratulations Matthew! In the SEA Lab, Matthew has been working on systems optimization of Integrated Pumped Hydro and Reverse Osmosis Systems (IPHROS) and is currently preparing a manuscript for publication on his work. In addition to his work in the SEA Lab, Matt has been working with Prof. Avedisian and has co-authored two papers on biofuel droplet combustion.

Prof. Haji was selected as a poster presenter at the the U.S. Clean Energy, Education, and Empowerment (C3E) Initiative’s 2020 Symposium. She presented the work she has been doing on the Development of a Platform for Expanding AUV exploRation to Longer ranges (PEARL). Her presentation detailed PEARL, an integrated autonomous floating servicing station that utilizes solar energy to simultaneously provide AUV battery recharging and data uplink via new generation high-bandwidth low-Earth orbit satellite constellations. Specifically, she discussed the how the energy generation and energy storage capabilities of PEARL drive key design decisions, and the renewable energy harvesting and energy management challenges of PEARL. Watch her poster introduction on YouTube.

The SEA Lab is hiring graduate students and postdocs! Email Prof. Haji (maha@cornell.edu) to learn more and apply. We recruit graduate students from the fields of Mechanical Engineering (deadline to apply: Dec 15, 2020) and Systems Engineering (deadline to apply: January 15, 2021).

Prof. Haji presents work on the ‘Analysis of Integrated Pumped Hydro Reverse Osmosis Systems for Iran (IPHROSI) at the 2020 MIT A + B Applied Energy Symposium. Her presentation discussed how IPHROSI could enable Iran to meet both its energy and freshwater needs through renewable and sustainable technologies. A number of regions throughout Iran were highlighted for their suitability for the development of IPHROSI, finding there existed the potential to store over 25 TWh of renewable energy, more than all of the country’s electricity generation from oil in 2018 (23 TWh). These sites could supply both energy and freshwater to meet the needs of over 500 million people (over five times the projected population of Iran in 2050). View a recording of her presentation.

Prof. Haji presented recent work on ‘A Framework for the Design of Renewably Powered Offshore AUV Servicing Platforms‘ at the Ocean Sciences Meeting 2020, held in San Diego, CA. The talk detailed a framework for the co-optimization of the design and operation of underwater, surface, and space assets, which enable PEARL to overcome some of the past limitations in AUV servicing platforms. The co-design framework presented included systems for on-board renewable energy generation and satellite data transfer, and can be modified to servicing platforms using ocean renewable energy such as power from waves, tides, currents, or winds. Platforms like PEARL could enable AUVs to provide increased and reliable scientific data key to the sustainable growth of the Nation’s Blue Economy. View the presentation abstract on the conference website.