Global ETD Search
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Showing 1 to 7 of 7 for “"Edge loss"”.
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Loss mechanisms in a highly loaded transonic axial turbine stage
… turbine technology is assessed for its role in loss generation. Steady and unsteady two-dimensional and three-dimensional flow computations, complemented by simplistic control volume analyses as well as test data, provided results for establishing the quantitative level of loss from various …
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Analytical methods for evaluating two-dimensional effects in flat-plate solar collectors
… conventional assumption of an overall uniform loss coefficient U<sub>L</sub> was used in the analysis. The first method is practical only for parallel-flow collectors. The second method used two sectionally uniform loss coefficients -- U<sub>LI</sub> for internal collector sections and …
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Real gas effects in ORC turbines
… the given range of isentropic exponents, the loss can vary between 20% and 35%, depending on vane exit Mach number. These difference in aerodynamic loss are driven by a change in the mixing loss at the trailing edge loss and a shift in shock loss within the passage. These effects are a strong …
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Trailing Edge Aerodynamics: Flow Regimes, Geometry and Loss
The flow at the trailing edge of a turbine blade at transonic air velocities can be extremely complex. Solid trailing edges can shed vortices in a manner known as transonic vortex shedding, where vortices form very close to the trailing edge and cause large trailing edge shear layer deflection. …
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Detection of lower hybrid waves at the plasma edge of a diverted tokamak
… are presented in an attempt to understand the loss of lower hybrid current drive (LHCD) efficiency in reactor-relevant, high-density plasmas on the diverted Alcator C-Mod tokamak. While the previous work has identified that edge interactions, such as collisional absorption and excessive …
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Modeling edge effects of mesa diodes for silicon photovoltaics
… has been to determine the influence of edge conditions on the overall performance of mesa diodes under dark and illuminated conditions. Mesa diode arrays are fabricated on crystalline silicon solar cells. They are an array of small area solar cells that are electrically isolated from one …
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Quantification of lower hybrid wave absorption in the edge of the Alcator C-Mod Tokamak
… > 1 . 10 20 m-3), an anomalous current drive loss is observed. This loss, known as the LHCD density limit, occurs in diverted plasmas and is correlated with the plasma current and plasma density. Several mechanisms have been implicated in the loss of current drive, with both experimental and …