![]() ![]() With this theory, the shear moduli of dry sediments are the same as the shear moduli of water-saturated sediments. The velocity ratio of water-saturated sediment derived from the Biot-Gassmann theory depends mainly on the Biot coefficient?a property of dry rock?for consolidated sediments with porosity less than the critical porosity. Velocity ratio and its application to predicting velocities Utilizing the HVLA process, long and sustained control of heavy organic contaminants was demonstrated. The performance of each design was evaluated and compared against computer simulation. Two HVLA concept packaging designs (linear flow and radial flow) were tested. To this end, the high velocity, low aspect ratio (HVLA) adsorption process architecture was demonstrated against a trace contaminant load representative of the International Space Station atmosphere. By considering a paradigm shift in adsorption architecture design and operations, in which flows of high superficial velocity are treated by low-aspect ratio sorbent beds, the range of well-adsorbed contaminants becomes limited, but the process flow is increased such that contaminant leaks or emerging contaminants of interest may be effectively controlled. A consequence of this operational approach, however, is a limited available operational flow margin. Through operation in this manner, most contaminants, including those with relatively high potential energy are readily adsorbed. ![]() ![]() Specifically, the bed superficial velocity is controlled to limit the adsorption mass-transfer zone length relative to the physical adsorption bed this is aided by traditional high-aspect ratio bed design. Traditional gas-phase trace contaminant control adsorption process flow is constrained as required to maintain high contaminant single-pass adsorption efficiency. Evaluation of a Candidate Trace Contaminant Control Subsystem Architecture: The High Velocity, Low Aspect Ratio (HVLA) Adsorption Process ![]()
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