Dynaflow, Inc. products

The DynaSwirl free vortex gas-liquid separator is developed from the proprietary vortex generation technology DynaSwirl of Dynaflow, Inc.. It has the capability to separate low void fraction gas–liquid mixture for many different applications. Most recently, the DynaSwirl gas-liquid separator has been tested under reduced gravity on a NASA mircogravity research flight and successfully demonstrated it readiness for supporting NASA space mission.

The CaviJet technology deliberately induces cavitation in front of the nozzle to produce extremely high, very localized stresses on a surface due to bubble cavity collapse in the jet stagnation region.

The StratoJet technology utilizes a passive acoustic resonance created by flow interaction with the nozzle and upstream chambers to induce the formation of large vortical ring cavities which collapse on the target.

The DynaSwirl nozzle imports a rotating flow to create a very low pressure at the center of the vortex core which cavitates. This cavitation can form a helicoidal shape with a vortex breakdown near the orifice.

The Acoustic, Bubble Spectrometer is a commercially available acoustics based device that measures bubble size distributions and void fraction of bubbles in liquids. The initial efforts to develop the technology were funded by Small Business Innovation Research (SBIR) awards from the National Science Foundation. Continued developments were funded by institutions and companies in both public and private sectors, including Department of Energy, Oak Ridge National Laboratories, and many other private companies. The ABS Acoustic Bubble Spectrometer®© is under constant development, driven by new commercial applications and by the request of customers using the instrument to address their specific applications.

Research & Development at Dynaflow, Inc. has yielded a new product, the ABS Cavitation Susceptibility MeterTM (ABS-CSMTM) based on an acoustic technique to generate and measure cavitation inception in a liquid. This product is now offered to users to enable quantification of the cavitation susceptibility, also known as liquid ‘quality’ or tensile strength of.

DynaPerm is a system for enhanced filtration of particles from liquids. Laboratory experiments have produced flux rate increases of a factor of 50 over conventional cross- flow filtration with comparable or improved effluent quality. The initial efforts to develop the technology were funded by Small Business Innovation Research (SBIR) awards from the National Science Foundation.

Dynaflow, Inc. is continuing development of a novel energy efficient cost effective technology for oxidation of contaminants in water and for removal of micro-organisms. These oxidation and disinfection R&D efforts have been funded in part by the National Aeronautics and Space Administration (NASA), the Environmental Protection Agency (EPA), the National Institute of Environmental Health (NIEHS), and the National Science Foundation (NSF). The DynaJets technology has been found to achieve high efficiency oxidation of a wide variety of compounds and to achieve multiple order reductions in microorganisms. The technology is covered by two patents.

Over the past two decades Dynaflow engineers and scientists have contributed significantly to the scientific community’s knowledge of cavitation and bubble dynamics in ship propulsion. This is reflected in extensive journal publications on these subjects. We have developed a wide range of numerical methods, including modeling of cavitation on propellers, one-way and two-way bubble/flow interaction schemes, spherical and non-spherical bubble deformation models, boundary and vortex element simulation methods, and Navier-Stokes equation solvers. We have also used our experimental facilities to validate the numerical simulations, and to study cavitation erosion and materials response to cavitation.