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  • 1
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    Method and Apparatus for Measuring Thermal Conductivity of Small, Highly Insulating Specimens (2013)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A method and apparatus for the measurement of thermal conductivity combines the following capabilities: 1) measurements of very small specimens; 2) measurements of specimens with thermal conductivity on the same order of that as air; and, 3) the ability to use air as a reference material. Care is taken to ensure that the heat flow through the test specimen is essentially one-dimensional. No attempt is made to use heated guards to minimize the flow of heat from the hot plate to the surroundings. Results indicate that since large correction factors must be applied to account for guard imperfections when specimen dimensions are small, simply measuring and correcting for heat from the heater disc that does not flow into the specimen is preferable.
    Keywords: Fluid Mechanics and Thermodynamics
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  • 2
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    Parallel Plate System for Collecting Data Used to Determine Viscosity (2013)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A parallel-plate system collects data used to determine viscosity. A first plate is coupled to a translator so that the first plate can be moved along a first direction. A second plate has a pendulum device coupled thereto such that the second plate is suspended above and parallel to the first plate. The pendulum device constrains movement of the second plate to a second direction that is aligned with the first direction and is substantially parallel thereto. A force measuring device is coupled to the second plate for measuring force along the second direction caused by movement of the second plate.
    Keywords: Fluid Mechanics and Thermodynamics
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  • 3
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    Method for making a microporous membrane (2013)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A method for making a microporous membrane comprises the steps of: providing a plurality of carbon nanotubes having a hollow interior diameter of 20 Angstroms or less; sonicating the plurality of carbon nanotubes utilizing a solution comprising deionized, distilled water and a surfactant that coats at least one of the plurality of carbon nanotubes; collecting the coated carbon nanotubes; forming a matrix that supports the plurality of carbon nanotubes; embedding the coated carbon nanotubes into the matrix; rinsing the coated nanotubes to remove at least a portion of the surfactant; curing the nanotube-matrix assembly; and cutting the nanotube-matrix assembly to a particular thickness so as to open the ends of the embedded nanotubes. The hollow interiors of the plurality of embedded carbon nanotubes comprise the pores of the microporous membrane.
    Keywords: Fluid Mechanics and Thermodynamics
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  • 4
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    Conical seat shut off valve (2012)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A valve includes a housing defining a bore having an inlet and extending along a longitudinal axis. A head is attached to the housing and defines a head passage having an outlet. A piston is disposed within the bore and includes a piston passage extending through the piston along the longitudinal axis. The piston is moveable between a closed position in which a sealing end of the piston abuts a seat of the head to close fluid communication through the piston passage and an open position in which the sealing end of the piston is axially spaced along the longitudinal axis from the seat of the head to permit fluid communication through the piston passage between the inlet and the outlet. The housing defines an equalizing chamber in fluid communication with the head passage for damping movement of the piston.
    Keywords: Fluid Mechanics and Thermodynamics
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  • 5
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    Safety drain system for fluid reservoir (2012)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A safety drain system includes a plurality of drain sections, each of which defines distinct fluid flow paths. At least a portion of the fluid flow paths commence at a side of the drain section that is in fluid communication with a reservoir's fluid. Each fluid flow path at the side communicating with the reservoir's fluid defines an opening having a smallest dimension not to exceed approximately one centimeter. The drain sections are distributed over at least one surface of the reservoir. A manifold is coupled to the drain sections.
    Keywords: Fluid Mechanics and Thermodynamics
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  • 6
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    Estimation of alga growth stage and lipid content growth rate (2012)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Method and system for estimating a growth stage of an alga in an ambient fluid. Measured light beam absorption or reflection values through or from the alga and through an ambient fluid, in each of two or more wavelength sub-ranges, are compared with reference light beam absorption values for corresponding wavelength sub-ranges for in each alga growth stage to determine (1) which alga growth stage, if any, is more likely and (2) whether estimated lipid content of the alga is increasing or has peaked. Alga growth is preferably terminated when lipid content has approximately reached a maximum value.
    Keywords: Fluid Mechanics and Thermodynamics
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  • 7
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    Fiber optic liquid mass flow sensor and method (2010)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A method and apparatus are provided for sensing the mass flow rate of a fluid flowing through a pipe. A light beam containing plural individual wavelengths is projected from one side of the pipe across the width of the pipe so as to pass through the fluid under test. Fiber optic couplers located at least two positions on the opposite side of the pipe are used to detect the light beam. A determination is then made of the relative strengths of the light beam for each wavelength at the at least two positions and based at least in part on these relative strengths, the mass flow rate of the fluid is determined.
    Keywords: Fluid Mechanics and Thermodynamics
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  • 8
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    Method of Simulating Flow-Through Area of a Pressure Regulator (2011)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The flow-through area of a pressure regulator positioned in a branch of a simulated fluid flow network is generated. A target pressure is defined downstream of the pressure regulator. A projected flow-through area is generated as a non-linear function of (i) target pressure, (ii) flow-through area of the pressure regulator for a current time step and a previous time step, and (iii) pressure at the downstream location for the current time step and previous time step. A simulated flow-through area for the next time step is generated as a sum of (i) flow-through area for the current time step, and (ii) a difference between the projected flow-through area and the flow-through area for the current time step multiplied by a user-defined rate control parameter. These steps are repeated for a sequence of time steps until the pressure at the downstream location is approximately equal to the target pressure.
    Keywords: Fluid Mechanics and Thermodynamics
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  • 9
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    Method of calibrating a fluid-level measurement system (2010)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A method of calibrating a fluid-level measurement system is provided. A first response of the system is recorded when the system's sensor(s) is (are) not in contact with a fluid of interest. A second response of the system is recorded when the system's sensor(s) is (are) fully immersed in the fluid of interest. Using the first and second responses, a plurality of expected responses of the system's sensor(s) is (are) generated for a corresponding plurality of levels of immersion of the sensor(s) in the fluid of interest.
    Keywords: Fluid Mechanics and Thermodynamics
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  • 10
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    Drag Reduction Status and Plans - Laminar Flow and AFC (2011)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: No abstract available
    Keywords: Fluid Mechanics and Thermodynamics
    Type: HQ-STI-11-017 , AIAA Aero Sciences Meeting; Jan 04, 2011 - Jan 07, 2011; Orlando, FL; United States
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