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Showing 1 to 11 of 11 for “"buckingham pi"”.
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Scaling a Prismatic Revolute Joint (Pr) Manipulator Using Similitude and Buckingham Pi Techniques
… polynomial. Scaling laws were developed from Buckingham's Pi theorem to facilitate the selection process of gearmotors. Nondimensional, nonlinear, differential equations were developed to describe viscous, Coulomb and static friction in comparative PM d.c. motors. From the insights gained …
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Twist error response of periodic lattices to strain energy distribution
… are applied to the lattice during folding. A Buckingham Pi analysis was used to show how the twist response of the lattice due to an external angular wall error depends on the torsional stiffnesses of the panels, the initial fold angle of the preformed accordion unit in the lattice and the …
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Boundary layer temporal evolution observed by doppler lidar upwind of a lake-effect snow event
… layer during the night. Additionally, the Buckingham Pi method was utilized to evaluate various parameters hypothesized to influence the boundary layer depth. Buckingham Pi was chosen as an appropriate method as it employs the use of dimensionless analysis which is useful to compare …
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Surface water flow resistance due to emergent wetland vegetation
… this study were to investigate the effect of clumping vegetation on flow resistance and to develop a prediction equation for use in wetland design. A 6-m by 1-m by 0.4-m recirculating flume was planted with mature common rush, Juncus effusus, a common emergent wetland plant. Three different flow …
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A non-dimensional analysis of cardiovascular function and thermoregulation
… to form dimensionless quantities using the Buckingham Pi Theorem. Each dimensionless quantity, or parameter, is composed of definable physical quantities that reflect the interaction between various components of the system. From the analysis, a series of reference scales was identified and, …
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Boundary condition effects on vibrating cantilever beams
… mechanisms, the cantilever beam, and utilizing Buckingham Pi theory the dynamic behavior of the vibrating beams could be quantified and the associated variables used to tailor the design of a flexure and boundary control system. This research details the primary correlation between variables in …
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Estimating Flow Through Rock Weirs
… rock weirs play a valuable role in developing appropriate wetland hydrology. Although rock weirs are commonly used, a deficit of knowledge exists relating to the stage-discharge relationship of these structures. Therefore, the goal of this research was to determine a weir equation and …
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Hybrid Opto-Electrokinetic Technique For Micro/nanomanipulation: Towards Application Of A Novel Non-Invasive Manipulation Technique In Microbiological Assay
… explores various physical mechanisms of the Rapid Electrokinetic Patterning (REP) technique suggested for rapid and precise on-chip manipulation of colloids and fluids, and bio-compatibility of the technique for biological applications. REP is a hybrid opto-electrokinetic technique that is …
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Technology development targets for commercial In-Space Manufacturing
… of key system drivers on lifecycle cost. Then, Buckingham Pi theorem is used to identify nondimensional groups of input design variables, such as the ratio of areal density of launched components to that of ISM components, the ratio of ISM facility mass to that of ISM components, the ratio of …
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Development, Evaluation and Improvement of Correlations for Interphase Friction in Gas-Liquid Vertical Upflow
… between the liquid and vapor phases. Using the Buckingham Pi Theorem, a dimensionless interphase friction force was tested and refined before being compared against seven other dimensionless parameters. Three correlations have been developed that establish a dimensionless interphase friction …
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Heat transfer performance and prediction of low global warming potential R134a refrigerant alternatives
… system charge is critical. The condenser is typically responsible for 50% of the charge of a system; it is vital to have a fundamental understanding of the flow condensation heat transfer performance of low GWP refrigerants such as R513A and R450A. Flow condensation data were extracted from 35 …