Preliminary Study of a New Octane Modular Stator Field Excited Flux Switching Motor for High Speed Applications

2019 ◽  
Author(s):  
Bakhtiar Khan ◽  
F. Khan ◽  
N. Ahmad ◽  
G. Faraz ◽  
R. Ahmad ◽  
...  
Keyword(s):  
High Speed ◽  
Preliminary Study ◽  
Flux Switching Motor

High speed vocal fold imaging using smartphone-based laryngoscope: A preliminary study

2020 ◽  
Author(s):  
YoungKyu Kim ◽  
Jeongmin Oh ◽  
Seung-ho Choi ◽  
Ah Ra Jung ◽  
Yoon Se Lee ◽  
...  
Keyword(s):  
Vocal Fold ◽  
High Speed ◽  
Preliminary Study

Preliminary Study on Stability Parameters of Semi-Displacement Ships

2018 ◽  
Vol 874 ◽  
pp. 105-113
Author(s):  
Wolter R. Hetharia
Keyword(s):  
Froude Number ◽  
High Speed ◽  
Stability Evaluation ◽  
Stability Parameters ◽  
Passenger Ships ◽  
Speed Range ◽  
Preliminary Study ◽  
The Stability ◽  
Weather Criterion ◽  
Engine Power

Semi-displacement passenger ships operate at the speed range of 19 to 23 knots or Froude number Fn of 0.50 to 0.75. Those ships need higher engine power to maintain their speeds. The efforts should be made to minimize their higher engine powers. Most experts worked to minimize the engine power for most merchant ships. In their works, the initial metacentric (GMO) at departure condition was taken as constraint to represent stability parameters. However, this is not a general case for semi-displacement passenger ships. In this study, a parent semi-displacement passenger was designed and modified. Stability parameters were computed and evaluated as required by the rules IMO-HSC. In addition, one existing high speed passenger ship was evaluated for stability evaluation as reference also. It was found that the stability parameters at large angles of inclination such as: weather criterion, angle of GZmaxand others are more critical compared to GM0. Also, the stability parameters when ship is at arrival condition are more critical compared to those at departure condition. The study resumed that the application of criterion GM0≥ 0.15 m at optimization process of semi-displacement passenger ships should be considered again for the future.

A preliminary study of size reduction of powders in a single-vessel pharmaceutical processor

2000 ◽  
Vol 214 (3) ◽  
pp. 251-253
Author(s):  
S A MacGregor ◽  
L B Newnes ◽  
M Li ◽  
J N Staniforth ◽  
M J Tobyn ◽  
...  
Keyword(s):  
Initial Phase ◽  
High Speed ◽  
Particle Diameter ◽  
Size Reduction ◽  
Minimum Size ◽  
Final Particle ◽  
Single Vessel ◽  
Preliminary Study

The size reduction performance of a pneumatically driven single-vessel pharmaceutical processor is described. Two materials were considered, namely commercially available granular lactose (CAGL) and high-speed mixer granulator lactose (HSMGL). In both cases there is an initial phase in which the particle diameter is reduced rapidly. The rate at which the size reduction decreases is reduced with time. The final particle diameter was found to be dependent on the material being processed. In the case of CAGL, the minimum size achieved was 150 μm, while in the case of the HSMGL the final particle diameter was 100 μm.

scholarly journals Association of Beef And Beef-Related Nutrients to Visual Cognitive Performance Training In Young Adult Females

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 1233-1233
Author(s):  
Steve Riechman ◽  
Nicos Georghiades ◽  
Caroline Sullivan ◽  
Susanne Talcott ◽  
Stephen Smith ◽  
...  
Keyword(s):  
Cognitive Performance ◽  
High Speed ◽  
Nutritional Factors ◽  
Performance Training ◽  
College Age ◽  
Funding Sources ◽  
Preliminary Study ◽  
Daily Intakes ◽  
Visual Cognitive

Abstract Objectives Visual cognitive performance (VCP) is an important factor in high-speed interactions with the environment such as sports or driving, however, the testing, training and determination of factors that influence this ability has been elusive. The overall purpose of the Nutrition, Vision and Cognition in Sport Studies (IONSport) is to determine the nutritional factors that explain large variance in VCP and training responses. The objective of these studies is to determine if beef associated nutrients affect VCP. Methods In the preliminary study, 52 college age women performed 15 visual cognitive training sessions (Neurotracker) in 10 visits to the laboratory (all 10 visits within 15 days). On the days of training, all food intake was documented (no intervention, no change in diet). Mean nutritional intakes were calculated for the 10 days of food records. For the RCT intervention, 80 women were randomized to either a daily beef or veggie patty and consumed 1 patty/day for 30 days. Results In the preliminary study, iron intake was significantly associated to VCP (P < 0.001) where groups of low (<10 mg/day), medium (10–20 mg/day) and high (>20 mg/day) were all significantly different from each other (P < 0.05). Cholesterol, choline, arginine and B vitamins intake were also significantly associated to VCP (P < 0.05). Preliminary analyses of the RCT to enrich these nutrients with beef indicate higher mean VCP for the beef group with significant differences in mean daily intakes of beef associated nutrients. Conclusions These results suggest that high intake of beef associated nutrients may improve VCP. Funding Sources RCT funded by National Cattleman's Beef Association.

Topology Optimization of Flywheel Rotors Using SIMP Method: A Preliminary Study

2012 ◽  
Vol 579 ◽  
pp. 427-434 ◽  
Author(s):  
T.D. Tsai ◽  
C.C. Cheng
Keyword(s):  
Topology Optimization ◽  
Energy Storage ◽  
High Speed ◽  
Optimization Technique ◽  
Design Sensitivity ◽  
Topology Design ◽  
Energy Storage Devices ◽  
Simp Method ◽  
Preliminary Study ◽  
Rotor Stiffness

Flywheels are kinetic energy storage and retrieval devices as chemical batteries. However, the high charge and discharge rates, as well as the high cycling capability make flywheels attractive as compared to other energy storage devices. This research serves as a preliminary study that aims for developing a technique in designing a flywheel rotor based on the solid isotropic method with penalization (SIMP) method. Examples are presented to illustrate the optimum structural layouts obtained given various design objectives. For a static rotor, the objectives are maximizing the first torsional natural frequency, maximizing the moment of inertia and maximizing both of them, respectively. The problem is formulated using bound formulation and the method of moving asymptotes (MMA), a first-order optimization technique, was employed. Therefore the design sensitivity becomes a necessity. The so-called checkerboard problem in the topology optimization is avoided using the nodal design variable. Also, a threshold is used to reduce the numerical imperfection in each iteration. For the topology design of a rotating rotor, the centrifugal force induced in the high-speed rotation is considered. The objective is to maximize the rotor stiffness and is demonstrated in the last example. Results show clear topology layout of flywheel was obtained using proposed method.

Radial and Axial Inlet and Outlet Design for End Winding Cooling of High-Speed Integrated Flux-Switching Motor-Compressor

2021 ◽  
Author(s):  
Leyue Zhang ◽  
Hao Ding ◽  
Ahmed Hembel ◽  
Gregory Nellis ◽  
Bulent Sarlioglu
Keyword(s):  
High Speed ◽  
Flux Switching Motor
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