Understanding moderate to high speed phenomena such as explosion and cavitation bubble dynamics, liquid drop impact, wave dynamics, and vortex and jet flows is facilitated with still, video, and high speed movie photography. Major components of this capability include:

• Redlake Motion Scope PCI high speed video imaging system with a monochrome and color cameras capable of frame rates up to 8,000 and 2,000 frames/sec, respectively; a MiDAS integrated data acquisition system with 8 analog and 6 digital input channels and a 1.25 MHz maximum sampling rate.
• 2 HYCAM high speed movie cameras capable of 40,000 quarter frames/sec
• Plexiglass vacuum cells with electric spark discharge to study explosion and cavitation bubble dynamics
• A 72 x 5 x 4.5 ft tank with a flapper plate type wave maker at one end. Its mid section is made of plexiglass which allows for photographic observation capability. Waves of Froude number scaled significant wave height and modal period corresponding to any of the 8 Sea States of the NATO Sea State Table. Installation of a sloping floor of adjustable angle enables generation of plunging and spilling breaking waves to simulate the sloping bottom of the surf zone.
• A high flow rate recirculating flow loop with Plexiglass test section for studying supercavitation phenomena driven by a 15 hp pump capable of 500gpm at 40 psi.
• Still and video photographic equipment
• Several frequency generators and digital storage oscilloscopes
• TSI hot wire/ hot film anemometer
• Supporting data acquisition equipment, instrumentation, and sensors including flow meters, pressure gauges, sensitive hydrophones, and high frequency transducers.

Jet test tank with a translator

Dynaflow has a chemical laboratory on site. Analytical chemistry capabilities include trace organic analysis of water and air using gas chromatography (GC/FID and GC/PID) and mass spectroscopy (GC/MS with EI/CI/NCI). Several water quality analysis are also available including; Total Organic Carbon (TOC), Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), Total Phosphorous, Nitrate and Nitrite, Iron, Total Solids (TS), Total Suspended Solids (TSS), Volatile Suspended Solids (VSS), and pH.

• Mixer, grinder, screen separator, and plastic extruder fo rmicroporous tube fabrication.
• Mettler Analytical Balance.
• Centrifuge.
• Bibby Sterilin water still and Cole Parmer Research-Ion X-changer deionizer.

ASTM G73, the rotating disk liquid impact test apparatus

ASTM G32, ultrasonic or vibratory cavitation erosion test setup

Split Hopkinson Pressure Bar

Split Hopkinson Pressure Bar used to measure properties at high strain ratesin the thousands of in/in/sec which can differ by an order of magnitude from those for quasi static loading.

Dynaflow has a microbiology laboratory which utilizes our
DYNAJETS^® for use in disinfection studies. It includes all equipment necessary for growing bacterial strains and assessing their viability and destruction.

This equipment includes:   

• Autoclave for sterilization
• Incubator
• Shaker/water bath
• Digital M icroscope, Digital Biological Microscope
• Still for production of distilled water

Dynaflow possesses a fully equipped machine shop for fabrication of experimental setups and prototype hardware. It includes:

• 13” Lathe
• 49” bed milling machine
• Horizontal and Vertical band saw
• Polymer tube extruder

The ABS Acoustic Bubble Spectrometer®© laboratory includes equipment and facilities for measuring sound transmission through bubbly media, optical and acoustic bubble size measurements, and transducer fabrication. Specific elements include:

• Several PC portable and desk top ABS units
• Plexiglas flow loops and tanks for bubble size distribution measurement and validation studies
• Several different bubble generators for generation of bubbles of different sizes
• Vacuum and pressure pumps for changing ambient pressures
• Signal generation and data acquisition equipment and software
• Transducer fabrication and test facility

In-house facilities for disinfection and pollutant removal studies range form bench-top to 11,000 gallon, 0.5 MGD large-scale pilot plants

This equipment includes:   

• In-line cavitation reactor, 8 liter volume, 10 Hp centrifugal pump.
• In-line cavitation reactor, 20 liter volume, 5 Hp positive displacement pump.
• Polycarbonate visualization chamber, 30 liter volume, ¾ Hp 4-stage centrifugal pump.
• Inert Stainless steel reactor, 12 liter volume, 1 Hp 6-stage centrifugal pump.

Dynaflow possesses a machine shop for fabrication of experimental setups and prototype hardware. A number of post-processing programs and software to support analytical work (Maple, MathCAD, TecPlot and MatLab) are also available. Researchers have access to technical information at the Dynaflow library. Our location provides easy access to the libraries of Johns Hopkins University Applied Physics Laboratory (6 miles), the Johns Hopkins University (19 miles), and the University of Maryland, College Park (27 miles). Researchers may reach through public domain databases and information through high speed internet access.

DYNAFLOW is well equipped with the most recent high-end personal computers and work stations. These high performance computers are connected via high-speed networks to provide parallel computing capabilities. Access to government super-computing facilities are also available through contracts.