The BubbleTree toolset: CFD-integrated algorithm for Lagrangian tracking and rigorous statistical analysis of bubble motion and gas fluxes for application to 3D fluidized bed simulations

2018 ◽  
Vol 338 ◽  
pp. 960-974 ◽  
Author(s):  
K. Buchheit ◽  
C. Altantzis ◽  
A. Bakshi ◽  
T. Jordan ◽  
D. Van Essendelft
Keyword(s):  
Statistical Analysis ◽  
Fluidized Bed ◽  
Bubble Motion ◽  
Gas Fluxes ◽  
Rigorous Statistical Analysis ◽  
Lagrangian Tracking

Statistical Analysis of Operation Data and Automatic Control on Fluidized Bed Incineration Plant with Dryer

1993 ◽  
Vol 28 (11-12) ◽  
pp. 341-345
Author(s):  
Shigeki Minami ◽  
Hidekazu Nagasawa ◽  
Yoshinori Saito ◽  
Motoharu Yamagishi ◽  
Masakatsu Hiraoka ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Fluidized Bed ◽  
Fuzzy Theory ◽  
Exhaust Gas ◽  
Furnace Temperature ◽  
Incineration Plant ◽  
Commercial Plant ◽  
Dried Sludge ◽  
Fluidized Bed Incineration ◽  
Plant Control

Continuous operation data were obtained on a fluidized bed incineration plant with dryers, and two autoregressive models were then prepared through statistical analysis of the data. Based on the results, an automatic plant control system using fuzzy theory was designed. An incinerator system of this type is characterized by energy efficiency, for which optimum and stable moisture control of the dried sludge is important. The large difference in time constants between incinerator and dryers makes energy saving difficult. Based on these analyses and design, control operations at a commercial plant with a capacity of 150 wet-tons/day were studied. It was confirmed that reduction of auxiliary fuel consumption and reduction of CO and NOx in the exhaust gas were optimized, while the moisture content of dried sludge and the furnace temperature were kept stable.

Educational Interactive Multimedia Software: Can it Effectively Teach Engineering Concepts?

1999 ◽  
Author(s):  
Derek T. Reamon ◽  
Sheri D. Sheppard
Keyword(s):  
Statistical Analysis ◽  
Direct Current ◽  
Engineering Students ◽  
Interactive Multimedia ◽  
Educational Effectiveness ◽  
Multimedia Software ◽  
Teaching Techniques ◽  
Preference Group ◽  
Dc Motors ◽  
Rigorous Statistical Analysis

Abstract This paper provides a rigorous statistical analysis of the educational effectiveness of a curriculum module pertaining to direct current (DC) motors and motorized systems. Educational interactive multimedia software played an important role in the module, which also included lectures, a design project and other more traditional pedagogics. Pre- and post-tests were administered to measure learning during the module and individual test questions targeted specific areas of the curriculum to determine the contribution of the various resources to the entire learning environment. The data indicate that the module was indeed educationally successful and that the software contributed to the curriculum’s success. The module was particularly effective for promoting learning by female engineering students in the course and mitigated some discrepancies in prior knowledge. Students were also grouped into four preference groups based on analysis of students’ preference questionnaire responses. The data indicate that each preference group responded differently to the various teaching techniques employed in the curriculum.

Simultaneous analysis of families of sigmoidal curves: application to bioassay, radioligand assay, and physiological dose-response curves.

1978 ◽  
Vol 235 (2) ◽  
pp. E97 ◽  
Author(s):  
A DeLean ◽  
P J Munson ◽  
D Rodbard
Keyword(s):  
Statistical Analysis ◽  
Dose Response ◽  
Curve Shape ◽  
Response Curves ◽  
Pharmacological Studies ◽  
Rigorous Statistical Analysis ◽  
Efficient Data ◽  
Dose Response Curves ◽  
Physiological Dose ◽  
Efficient Data Analysis

Physiological and pharmacological studies of hormones, drugs, and neurotransmitters often generate families of sigmoidal dose-response curves. Optimally efficient data analysis should involve simultaneous description of all curves, rather than fitting each one individually. We have developed a general computerized method to describe the dose-response curves in terms of basal and maximal responses, ED50, and curve shape or steepness. This facile method permits rigorous statistical analysis, provides a basis for pooling of information from separate experiments, and allows one to test which characteristics are shared by various curves.

scholarly journals FACTORS OF SAFETY FOR THE DESIGN OF BREAKWATERS

1982 ◽  
Vol 1 (18) ◽  
pp. 125
Author(s):  
J.D. Mettam ◽  
J.G. Berry
Keyword(s):  
Statistical Analysis ◽  
Specific Gravity ◽  
Factor Of Safety ◽  
Hydraulic Model ◽  
Model Testing ◽  
Design Tool ◽  
Rigorous Statistical Analysis

This paper proposes to improve the safety of breakwaters by two important changes in the philosophy of design. When hydraulic model testing is used as a design tool the authors propose to reduce the specific gravity of the model breakwater to introduce a factor of safety in the prototype. They also recommend that the concept of testing for stability with the once in 50 year or once in 100 year wave should be replaced by a more rigorous statistical analysis to determine a design wave which has a probability of exceedence of no more than 5% in the lifetime of the structure.

ON DIURNAL VARIATION IN COSMIC-RAY INTENSITY AT OTTAWA

1955 ◽  
Vol 33 (10) ◽  
pp. 577-587
Author(s):  
S. D. Chatterjee ◽  
J. N. Bloom
Keyword(s):  
High Pressure ◽  
Statistical Analysis ◽  
Diurnal Variation ◽  
Ionization Chamber ◽  
Cosmic Ray ◽  
Cosmic Ray Intensity ◽  
Rigorous Statistical Analysis ◽  
Local Mean ◽  
Mean Time ◽  
Barometric Coefficient

Cosmic-ray data from a high pressure integrating ionization chamber, obtained at Ottawa, for 129 complete days during September 1950 to July 1951 are subjected to rigorous statistical analysis. The barometric coefficient is −0.19% per mm. of Hg for the period covered by this analysis. The results also indicate a physically significant 24-hr. wave in cosmic-ray intensity, with an amplitude of 0.12% of the total intensity, having its maximum at about 10.40 a.m. local mean time. The existence of the semidiurnal wave, however, is not physically significant.

406 Control of bubble motion in fluidized bed by gas distributor and gas pulsation

2005 ◽  
Vol 2005.80 (0) ◽  
pp. _4-11_-_4-12_
Author(s):  
Hitoshi ARAKI ◽  
Toshihiro KAWAGUCHI ◽  
Yutaka TSUJI
Keyword(s):  
Fluidized Bed ◽  
Bubble Motion ◽  
Gas Distributor
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