With recent advances in acoustic detection techniques, quieting of ship propellers is essential. we propose here to delay tip vortex cavitation by injection of long chain drag reducing polymers in the tip vortex core and thus reducing the tip vortex induced cavitation noise. for this to be… More

The existing gasturbine performance deterioration simulation methods are either too simple or too sophisticated to be of general use. gas turbine deterioration models based on stage characteristics, and stage stacking methods are proposed to alleviate this drawback. the stage characteristics will be… More

The long-term object of the research is to provide respirators of substantially reduced weight and size for use against toxic vapors in industrial work places. we will show the feasibility of using non-reacting polymeric absorbent materials in an oscillatory flow system that allows capture and… More

Innovative cencepts to greatly increase the efficiency and economy of particle removal from liquid effluent and process streams are being investigated. the development and understanding of efficient particle removal techniques is of critical importance to a broad spectrum of manufacturing and… More

PRINCIPAL INVESTIGATOR: Bostrom, Alan AWARDEE ORGANIZATION: Crunch Software Corp. 7677 Oakport Street, Suite 470 Oakland, CA 94621 TELEPHONE NUMBER: (510) 562-9900 AWARDEE NUMBER: 200-93-0608 The objective of this project is to create a microcomputer program to be used by anyone planning or studying… More

PRINCIPAL INVESTIGATOR: Sung, Hai-Yen AWARDEE ORGANIZATION: HYS Consultants 532 Cornell Ave. Albany, CA 94706 TELEPHONE NUMBER: (510) 524-0298 AWARDEE NUMBER: 200-93-0664 Evidence has shown that increasing cigarette tax is a powerful tool to discourage cigarette consumption and to reduce the… More

Environmental regulations increasingly limit emission of gaseous substances from industrial processes necessitating separation and recovery of many compounds. it is increasingly important to recover dilute gases in process waste streams for recycle of valuable chemicals economically, and to limit… More

Optimization in ship system design is a problem which, if properly formulated and solved, would have great economic impact. however, the problem cannot be easily cast mathematically as a classical single objective optimization problem. in ship system design a considerable number of criteria must… More

In the proposed research Dynaflow, Inc. and Nichols' AME propose to develop a high fidelity model of the surf-zone for implementation in marine corps simulators for the Advanced Amphibious Assault Vehicle. Phase I research will concentrate on identifying those elements of a surf-zone model that must… More

Current space water reclamation systems require resupply and expendable use that are too large for long duration remote space applications such as Mars expeditions and lunar bases. We propose development of a novel jet-induced cavitation process for water reclamation that would be lightweight, low… More

The hydrodynamic characteristics of a vessel are affected in restricted waters by the proximity of nearby moving or moored vessels. Interactions can result in large motions, potential collisions and significant loads on nearby structures, banks, and sediments. In Phase 1, we developed and… More

The hydrodynamic characteristics of a vessel are affected in restricted waters by the proximity of nearby moving or moored vessels. Interactions can result in large motions, potential collisions and significant loads on nearby structures, banks, and sediments. In Phase 1, we developed and… More

The potential for accidents in harbors increases with traffic density. Collisions with other ships or natural obstacles are caused by reduced reaction time in an unexpected situation. We propose to develop a PCWindows based ship simulator, which will be able to simulate multi-ship dynamics in… More

DESCRIPTION (provided by applicant): The overall objective of the proposed effort is to develop a novel process to remediate groundwater contaminated with toxic organics utilizing jet-induced cavitation. A wide variety of toxic substances in aquifers at many Superfund sites pose serious problems to… More

Current space water reclamation systems require resupply and expendable use that are too large for long duration remote space applications such as Mars expeditions and lunar bases. We propose development of a novel jet-induced cavitation process for water reclamation that would be lightweight, low… More

Current space water reclamation systems require resupply and expendable use that are too large for long duration remote space applications such as Mars expeditions and lunar bases. We propose development of a novel jet-induced cavitation process for water reclamation that would be lightweight, low… More

Dynaflow, Inc., proposes the development of a novel jet-induced cavitation process for the removal of various pollutants¿including pesticides from wastewater discharge¿ that would be economical, readily applicable to both large- and small-scale systems, and that does not produce potentially… More

The potential for accidents in harbors increases with traffic density. Collisions with other ships or natural obstacles are caused by incorrect controls manipulation by the master in response to some unexpected situation, especially when in a new environment. Continual training for various critical… More

Dynaflow, Inc., proposes the development of a novel hydrodynamic cavitation process for high-rate disinfection of combined sewer overflows (CSOs) that would be economical and readily applicable to both large- and small-scale systems. This process would not produce potentially hazardous by-products… More

Presently, at-sea ship shock tests subject the vessel to high-pressure pulses created by detonating large explosive charges in the open ocean. The process is highly disturbing to the environment and subject to a variety of operational restrictions. Theresults are severe costs and scheduling… More

Multi-hull designs with captured air plenums have potential benefits in reduced resistance, better shock mitigation, and improved seakeeping performance. We propose to extend our proprietary CFD software, 3DYNAFSc, to the study of complex ship hulls withair plenums. 3DYNAFSc has been very… More

An electromagnetically driven plate can be used as a source to elicit a target response comparable to that due to an UNDEX event without use of explosives. Feasibility of utilizing such a concept was demonstrated during Phase I. A "DockShock" concept would employ an array of such electrically driven… More

Multi-hull designs with captured air plenums have potential benefits in reduced resistance, improved seakeeping performance, and better shock mitigation. We have successfully extended our CFD software, 3DynaFSc, to the study of complex ship hulls with air plenums during Phase I. The code enabled… More

Concentrated aquatic animal production facilities (CAAP) have recently fallen under new EPA effluent limitations. Compliance with these guidelines creates the opportunity to improve effluent and recycled water quality. Cavitation caused by our FYNAJETS and the collapse of micro-bubbles in water is… More

Bubble generation and entrainment in the transom region of a surface ship, along its hull, and in breaking waves are major ship signature contributors. For advanced ships such as the LCS, another source of air entrainment is added with the propulsion waterjets interacting with the free surface in… More

This Small Business Innovation Research (SBIR) Phase I project focuses on the development of advanced software for the description of complex multiscale bubbly flows such as those encountered in a variety of chemical and mechanical engineering processes. The strength of this proposed hybrid model is… More

DESCRIPTION (provided by applicant): Targeted drug and gene delivery is one of the most rapidly emerging applications for ultrasound contrast agents because it has the potential of reducing the deleterious side effects of the drug to the healthy tissue while minimizing the overall dose needed.… More

The Oak Ridge National Laboratory (ORNL) has recognized that the generation of strong shock waves in the Spallation Neutron Source (SNS) can lead to cavitation and significant erosion on the vessel wall containing the liquid mercury target. Based on preliminary numerical and experimental work at… More

OakRidge National Laboratory (ORNL) has recognized that the generation of strong shock waves in the Spallation Neutron Source (SNS) can lead to cavitation and significant erosion of the wall of the liquid mercury target. Based on preliminary numerical and experimental work at ORNL and other… More

Surface ship generated bubbles are a major signature contributor. For advanced ships such as the LCS, waterjet propulsion adds another source of air entrainment through the waterjet free surface interactions. In littoral warfare, such wakes provide an opportunity to wake homing torpedoes due to… More

The generation of a strong shock wave in the Spallation Neutron Source (SNS) can lead to cavitation and significant erosion on the vessel wall containing the liquid mercury target. Based on preliminary numerical and experimental work at various laboratories, it has been proposed that strategies… More

The generation of a strong shock wave in the Spallation Neutron Source (SNS) can lead to cavitation and significant erosion on the vessel wall containing the liquid mercury target. Based on preliminary numerical and experimental work at various laboratories, it has been proposed that a cloud of… More

DESCRIPTION (provided by applicant): Target drug and gene delivery are rapidly emerging applications for ultrasound contrast agents since they reduce potential deleterious side effects to healthy tissue and minimize the overall dose needed. Development of new contrast agents requires a good… More

The carbon dioxide produced from coal-fired power plants can be captured and used to grow algae. The algae convert CO2 into natural oils that are suitable for conversion into biodiesel. However, harvesting the algae and extracting the oil are currently difficult and expensive operations. Cheaper,… More

This SBIR Phase I project will develop a novel microfiltration system which uses cross-flow filtration, swirl flow patterns, oscillated and periodically interrupted flow, periodic back-flush, and particle recuperation to deal with the treatment of paint sludges generated from spray paint booths. It… More

There is a strong need to develop inexpensive and efficient pretreatment processes which can be used by the biofuel industry to make it economically viable. The process of converting to useful liquid fuel lignocellulosic biomass, which is available in abundant quantity, is hindered by the… More

This Small Business Innovation Research Phase I project will develop a method for lysing algae and recovering the oil without pre-concentrating or dewatering. A promising feedstock for biofuels is photosynthetic algae, which can produce lipids in much higher yields per acre then can terrestrial… More

One of the most promising biomass sources for fuels and other feedstocks is photosynthetic algae. Algae can produce lipids, proteins, and other compounds, and can be grown in salt water. Current production practices rely on expensive means of harvesting, concentrating, and extracting the algae. This… More

Multiphase bubbly mixture flows in pipelines, cooling equipment, reaction towers, and in petroleum, chemical, geothermal and nuclear industries have strong influence on efficiency. The ability to predict the flow behavior accurately is essential in designing energy efficient two-phase flow… More

Multiphase bubbly mixture flows are of importance in turbomachinery, pipelines, cooling systems, reaction towers, as well as in various applications in petroleum, chemical, geothermal, and nuclear industries. The presence of the gaseous component has a strong influence on performance and efficiency.… More

Intense pulsed pressure waves induced by proton beam impact on mercury in a spallation target propagate in the mercury and reflect from vessel walls as expansion waves resulting in cavitation damage to the walls. Injection of gas bubbles (few micrometer diameter range and void fraction of the order… More

We propose to develop a propeller cleaning system using DYNAFLOW"s advanced cavitating and resonating waterjet technology. This non-abrasive technology generates cavitating microstructures in the jet flow at low jet pressures, thus avoiding problems with high jet impact pressures. It utilizes… More