Developing our staff to be industry leaders who aren't afraid to get their hands dirty.
Stuart came to Alden in 1996, after receiving two Bachelor's Degrees (Physics and Aerospace Engineering) and an M.S. and Ph.D. in Mechanical Engineering.
Stu built Alden's numerical modeling capability from scratch. He was an Alden Vice President for six years, during which time he had formal responsibilities of overseeing hydraulic and numerical modeling activities as well as flow meter calibration. Additionally, Stu has served as the Alden treasurer and has played key roles in strategic decisions associated with gas flow engineering and environmental and engineering services. Stu has extensive experience in power plant engineering, environmental engineering, manufacturing, and modeling. Stu has been president of Alden since May of 2009.
David is responsible for gas flow engineering and environmental engineering services at Alden. In addition to participation in selected projects, he provides overall technical and fiscal management. His particular expertise is in the areas of thermal and fluid dynamics, especially in their application to research problems and the presentation of laboratory results in the form of realistic and practical engineering recommendations.
David has over 25 years of research and product development experience associated with fossil power generation and environmental control systems. He has numerous patents relating to improved steam generator components, injection and firing systems, flow measurement systems, dampers and mist eliminators.
Dan is responsible for operations in Western North America, including business development efforts and hydraulic modeling using numerical methods. Tools employed are computational fluid dynamics (CFD) software as well as one- and two-dimensional hydraulic models, including sediment transport. In addition, he provides technical expertise on physical models, particularly when sediment is involved.
Greg is responsible for leading a dedicated and accomplished staff of scientists and engineers who perform biological and engineering evaluations for water resources projects. He has extensive experience performing feasibility studies and detailed designs for fish protection and passage facilities and debris management solutions at dams, hydroelectric projects and cooling water intakes.
Greg's experience includes 316(b) NPDES permit compliance, engineering feasibility studies, hydrology and hydraulic analysis, detailed designs, fabrication and construction drawings, specifications, operating and maintenance manuals, construction inspection as well as evaluating and testing hydrokinetic turbines.
Andy is responsible for the technical and fiscal management of the hydraulic modeling and consulting team. He has 30 years of experience providing day-to-day supervision of engineering studies and model studies during design, construction, and testing modes. These studies include hydraulic and 3D air models. Areas of particular expertise include the evaluation of intakes, outlets, stilling basins, pump sumps, navigation locks, control gates, spillways, etc.
Current hydraulic modeling efforts include pump sump studies where the formation of vortices and approach flows and configurations could affect pump performance, grit deposition studies for wastewater treatment plants and hydraulic studies of drainage canals.
Ludwig Haber joined Alden in February of 2008, working initially in what is now the Gas Flow Systems Engineering (GFSE) group. Work with the GFSE group focused on air quality control equipment at power plants and work on fluid structure interaction problems. Exposure to work with the civil hydraulics group at Alden began with an opportunity to write particle tracking software for use in large topographical models. Following this work, Alden provided the opportunity to become more closely involved with nuclear power plant projects, GSI-191 sump strainer testing in particular. Working together with colleagues it was possible to establish Alden as a top tier supplier of flow performance related testing and analysis services, not just for the nuclear industry but a broad range of clients including government and process industries.
Prior to joining Alden, Ludwig Haber earned his B.S., M.S. and PhD degrees from Virginia Tech. His graduate work was focused on combustion dynamics which plagued early dry low NOx combustion systems in gas turbines due to a coupling between fluid dynamics and heat-release. After finishing his studies Ludwig joined General Electric at their Global Research Center in Niskayuna, New York. There he was able to work on applying flow control technologies to a broad range of applications including: fan aeroacoustics, gas turbine exhaust performance, F404 exhaust noise reduction and synthetic diamond film production.
David is responsible for gas flow systems engineering at Alden, using industry knowledge and expertise as well as physical and computational fluid dynamic (CFD) mode.
He has over 20 years of experience designing fluid dynamic systems for energy, industrial, and medical sectors. He started work as a research engineer for Combustion Engineering developing pollution control systems for coal fired power plants using pilot scale units, scaled cold flow models, and computational fluid dynamic models. He joined the Alden team in 2004 where he expanded his work repertoire to include automotive aerodynamic designs and a variety of industrial and bio medical applications.
As Director of Gas Flow Engineering, David leads a team that applies their modeling techniques to improve system performance and provide efficient product designs for clean energy, glass and cement manufacturing, and bio-technical devices and medical products.
Phil is responsible for all flow meter testing performed in Alden's flow measurement facilities.
He provides technical and administrative supervision of Alden's Flow Measurement Department to insure the highest standard for calibrating fluid meters (ranging in size from fractional inches to 48 inches) to a NIST traceable uncertainty of less than 0.2% in accordance with ASME requirements.
Phil has 22 years of hydraulic engineering experience, including physical modeling and he is also responsible for field performance measurements of hydroelectric turbines and pumps, applying code accepted methods using current meters and dye dilution for flow measurement.
Mark Graeser, Director of Structural Engineering Services, joined Alden in 2013, where he has worked to significantly expand our design and engineering capabilities for hydraulic structures, including construction support. His specific project experience includes hydropower facilities, dam appurtenances, pump stations, water treatment facilities, and heavily loaded structures. He also specializes in the evaluation, retrofit, rehabilitation, and modernization of existing structures.
Before coming to Alden, Mark knew and respected Alden staff from his days at AECOM. Mark says, “I greatly appreciate the flexibility and support I’ve been given since joining a company that values its employees the way Alden does. It has been rewarding to see the growth of our structural engineering and design group and watching our unique collection of expertise come together to help clients solve complex problems.”
Mark says he knew at the age of 14 he wanted to become a Structural Engineer. With his career goals firmly set, he earned a B.S. in Civil Engineering from the University of Iowa, and a M.S. in Structural Engineering from the University of Minnesota. He is also a Professional Engineer in the states of California, Colorado, Georgia, Idaho, Maine, Oregon, Utah and Washington. When he’s not acting as a lead structural engineer on a project, Mark takes full advantage of all the things that Colorado has to offer—camping, hiking, mountain biking, fly fishing, and concerts at Red Rocks Amphitheater to name a few. You can also find him coaching and proudly watching his two sons play baseball and soccer.
Christopher has 20 years professional experience and is responsible for managing all aspects of Alden's Information Technology systems. As Director of Information Technology (IT), Christopher is responsible for the development and implementation of Alden's strategic IT vision to meet the increasingly complex requirements in the areas of engineering development, testing, and computational fluid dynamic (CFD) modeling. He is responsible for overseeing daily IT operations, as well as planning, designing, and maintaining the IT infrastructure for each of Alden's five regional offices. He has consulted for small businesses for 17 years, focusing on designing and implementing IT systems that improve efficiency and reduce cost.
Christopher has a B.S. in Business Administration (minoring in Computer Science), is a member of Institute of Electrical and Electronics Engineers (IEEE) and The International Information System Security Certification Consortium (ISC) and has been with Alden since 2007.
As Director of Finance for Alden, Maria Vecchio helps to combine the operational and strategic visions of the company through developing and enforcing accounting procedures and policies that support the company’s long term goals. Risk reduction and promoting new opportunities are primary focus areas for her, as well as compliance with FAR and GAAP. Her day-to-day efforts mean that we continue to grow and make effective decisions to support our ongoing business initiatives.
Maria earned a Bachelor of Science in Business Administration and Management and a minor in Psychology from Worcester State University. Prior to joining Alden in 2015, she worked as a New Business Development Specialist where she interacted with clients and colleagues and developed and managed forecasts and budgets.
Maria has always been extremely financially aware and focused on returns on investments—this includes experience in real estate investment and property improvements. Maria enjoys kayaking, travel, hiking and attending concerts. She is typically accompanied by her dog Bonzo, a Black Lab and German Shepherd mix.
George E. Hecker is a nationally recognized expert in hydraulic engineering with 50 years of experience in optimizing the performance of hydraulic structures, flow systems, and machinery through application of hydraulic models, field measurements, and analytical techniques.
He is the past President of Alden Research Laboratory, Inc.As a senior consultant for Alden, Mr. Hecker now provides technical expertise for selected studies, particularly those related to fish protection, and assists with technical presentations and reports. Prior to joining Alden in 1971, he worked for the Tennessee Valley Authority conducting hydraulic research and for Stone & Webster Engineering Company in Boston developing one of the first thermal discharge diffusers for a nuclear power station.
Dr. Padmanabhan provides technical guidance and review for all flow studies at Alden, using physical models, experiments and analyses. He is a recognized expert in the areas of closed conduit flow, pump intakes, reactor hydraulics, and transient flow. He is a past Senior Vice President of Alden and has been involved with managing business aspects of the company. He is the recipient of the prestigious 2011 Hydraulic Structures Medal awarded by the American Society of Civil Engineers. An Adjunct Professor at Worcester Polytechnic Institute, Dr. Padmanabhan teaches graduate courses in the area of fluids engineering.