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RISFeasibility of Using Multiwavelength Lidar Measurements to Measure Cloud Condensation Nuclei
Publisher: American Meteorological Society
Abstract: This paper addresses the feasibility of using mulliwavelength lidar measurements to differentiate both qualitatively and quantitatively between the relative concentrations of hygroscopic and nonhygroscopic aerosol particles. ...
Stability Limits of Reversible-Pump Turbines in Turbine Mode of Operation and Measurements of Unstable Characteristics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Measurements have been performed on a reversible-pump turbine model installed in a closed loop conduit system. The characteristics of the unstable pump turbine in turbine mode show a hysteresis ...
Dependency on Runner Geometry for Reversible-Pump Turbine Characteristics in Turbine Mode of Operation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Characteristics of a reversible-pump turbine have been measured with five different leading edge profiles in turbine mode. These profiles varied the inlet blade angle and the radius of curvature. ...
The 27–28 October 1986 FIRE IFO Cirrus Case Study: Cloud Optical Properties Determined by High Spectral Resolution Lidar
Publisher: American Meteorological Society
Abstract: During the FIRE cirrus IFO, the High Spectral Resolution Lidar (HSRL) was operated from a roof top site on the University of Wisconsin?Madison campus. Because the HSRL technique separately measures the molecular and cloud ...
Element Size and Other Restrictions in Finite-Element Modeling of Reinforced Concrete at Elevated Temperatures
Publisher: American Society of Civil Engineers
Abstract: One of the accepted approaches for postpeak finite-element modeling of RC comprises combining plain concrete, reinforcement, and interaction behaviors. In these, the postpeak strain–softening behavior of plain concrete is ...
Describing Function Analysis of Limit Cycles in a Multiple Flame Combustor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A recently developed nonlinear flame describing function (FDF) is used to analyze combustion instabilities in a system where the feeding manifold has a variable size and where the flame is ...
Very Low Specific Speed Centrifugal Pump—Hydraulic Design and Physical Limitations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: For low-flow and high-head applications, pump types such as progressive cavity or gear pumps are often used. However, centrifugal pumps are much more robust and wear resistant, and are beneficial if they can handle the ...
On the Secondary Flow System of an Aggressive Inter Compressor Duct
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In contrast to the highly optimized rotating components, the inter compressor duct (ICD) is offering a high potential for further improvements. Due to a more aggressive design, the length of the whole engine can be reduced. ...
The Effect of an Eroded Leading Edge on the Aerodynamic Performance of a Transonic Fan Blade Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Especially at transonic flow conditions the leading edge shape influences the performance of a fan profile. At the same time the leading edge of a fan profile is highly affected by erosion during operation. This erosion ...
Riblet Application in Compressors: Toward Efficient Blade Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Nowadays, modern axial compressors have already reached a very high level of development. The current study is focused on the question, if the application of riblets on the surfaces of a highly efficient modern compressor ...