scholarly journals Tesla Bladed Pump (Disc Bladed Pump) Preliminary Experimental Performance Analysis

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4873
Author(s):  
Yaguang Heng ◽  
Yuming Han ◽  
Huiyu Zhang ◽  
Weibin Zhang ◽  
Gérard Bois ◽  
...  
Keyword(s):  
Deep Sea ◽  
Research Work ◽  
Optimum Conditions ◽  
Dimensional Approach ◽  
Pump Design ◽  
Experimental Performance ◽  
One Dimensional ◽  
Euler Relation ◽  
Overall Performance ◽  
Performance Results

A preliminary experimental work on a centrifugal pump model specifically designed to transport slurry and multiphase flows is presented. The impeller design corresponds to the so-called “Tesla Bladed Pump” adapted from an existing DiscflowTM pump design for the petroleum deep-sea application. The overall performance results of such a specific pump design are presented for different rotational speeds and discussed in relation to affinity laws coefficients. The results show that the performance of the tested disc pump strongly differs from the conventional centrifugal bladed pump. A one-dimensional approach using complete Euler relation is used to explain the differences in the present case. Moreover, it has been found that available results in open literatures do not correspond to the real optimum conditions, more detailed research work must be performed to get a better understanding on this kind of bladed disc pump.

Assessment of Quantum Scaling Length Model for Cylindrical Surrounding Double-Gate (CSDG) MOSFET

2021 ◽  
Vol 13 ◽  
Author(s):  
Uchechukwu A. Maduagwu ◽  
Viranjay M. Srivastava
Keyword(s):  
Quantum Confinement ◽  
Research Work ◽  
Scaling Limit ◽  
Double Gate ◽  
Dimensional Approach ◽  
Form Expression ◽  
Quantum Energy ◽  
One Dimensional ◽  
Close Form ◽  
Better Than

Aim: The derivation and assessment of quantum scaling length of Cylindrical Surrounding Double-Gate (CSDG) MOSFET with respect to Silicon body thickness. Objectives: To derive the quantum natural length of CSDG MOSFET with respect of Silicon body Thickness, observe the behaviour of the CSDG MOSFET at the nanoscale regime and compare the behaviour of the CSDG MOSFET with Cylindrical Surrounding Gate (CSG) MOSFET. Methods: The authors employed the mathematical analysis. The quantum energy level is analysed using Schrodinger equation by assuming one-dimensional approach and a negligible potential well. Results: The analytical results obtained from classical and quantum natural length are compared with the numerical simulations. Also, the model was compared with CSG MOSFET. Results shows that proposed analytical close-form expression approximately matches the numerical simulation and the proposed CSDG MOSFET will be better than CSG MOSFET at quantum level even though it has smaller quantum natural length than CSG MOSFET. Conclusion: In this research work, quantum scaling length model and quantum scaling factor have been proposed using the quantum confinement approach. The performance assessment of the CSDG MOSFETs provided an opportunity of determining the scaling limit of CSDG MOSFETs by evaluating the trade-off between the quantum natural length and the classical natural length of CSDG MOSFETs. Results obtained were compared with CSG MOSFETs to show that CSDG MOSFETs offer better device characteristics.

Conduction Cooling for an LSI Package: A One-Dimensional Approach

1982 ◽  
Vol 26 (1) ◽  
pp. 45-54 ◽  
Author(s):  
R. C. Chu ◽  
U. P. Hwang ◽  
R. E. Simons
Keyword(s):  
Dimensional Approach ◽  
One Dimensional ◽  
Conduction Cooling

A one-dimensional approach for iris identification

2004 ◽  
Author(s):  
Yingzi Du ◽  
Robert Ives ◽  
Delores Etter ◽  
Thad Welch ◽  
Chein-I Chang
Keyword(s):  
Dimensional Approach ◽  
One Dimensional ◽  
Iris Identification

IMPLEMENTING FAST FOURIER TRANSFORMS ON DISTRIBUTED-MEMORY MULTIPROCESSSORS USING DATA REDISTRIBUTIONS

1994 ◽  
Vol 04 (04) ◽  
pp. 477-488 ◽  
Author(s):  
S.K.S. GUPTA ◽  
C.-H. HUANG ◽  
P. SADAYAPPAN ◽  
R.W. JOHNSON
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Distributed Memory ◽  
Fourier Transforms ◽  
Experimental Performance ◽  
Minimum Number ◽  
Data Redistribution ◽  
Using Data ◽  
Performance Results ◽  
Fft Algorithms

Implementations of various fast Fourier transform (FFT) algorithms are presented for distributed-memory multiprocessors. These algorithms use data redistribution to localize the computation. The goal is to optimize communication cost by using a minimum number of redistribution steps. Both analytical and experimental performance results on the Intel iPSC/860 system are presented.

Towards a Taxonomy of Information Systems: Or Does Anyone Need a Taxi?

1992 ◽  
Vol 7 (1) ◽  
pp. 30-36 ◽  
Author(s):  
David J. Grimshaw
Keyword(s):  
Information Systems ◽  
Research Effort ◽  
Three Dimensional ◽  
Future Research ◽  
Dimensional Approach ◽  
Business Information Systems ◽  
One Dimensional ◽  
Business Information ◽  
Integrated Taxonomy ◽  
The One

Many academic and practical traditions have been brought to bear upon the field of business information systems in an attempt to understand a rapidly changing subject. The insights provided by traditional disciplines to an essentially multi-disciplinary subject is essential and very healthy. However, there is a danger of proliferating many different, overlapping frameworks of information systems. There is a need to review the frameworks and suggest a way of integrating several approaches. The future research effort depends upon a consistent set of data being available and discussed. This paper reviews previous frameworks used to promote the understanding and discussion of information systems. The one-dimensional approach is rejected in favour of a three-dimensional approach built around three basic questions characterized as the three Ts. What tasks does the information system have to perform? What technology can best deliver the systems? In what timeframe are we operating? The paper concludes by suggesting an integrated taxonomy, based on the three Ts as the basis for future research and discussion.

Cluster mean-field dynamics in one-dimensional TASEP with inner interactions and Langmuir dynamics

2019 ◽  
Vol 33 (02) ◽  
pp. 1950012 ◽  
Author(s):  
Yu-Qing Wang ◽  
Zi-Huan Zhang
Keyword(s):  
Statistical Physics ◽  
Interacting Particle Systems ◽  
Research Work ◽  
Mean Field ◽  
Exclusion Process ◽  
Driven Diffusive Systems ◽  
One Dimensional ◽  
Proposed Model ◽  
Asymmetric Simple Exclusion ◽  
Non Equilibrium

In the area of statistical physics, totally asymmetric simple exclusion process (TASEP) is treated as one of the most important driven-diffusive systems. It contains profound non-equilibrium statistical physics mechanisms due to being the paradigm model like Ising model. Different with previous work, a one-dimensional TASEP coupled with inner interactions and Langmuir dynamics is taken into account. Weak coupled binding and unbinding rates are introduced in the proposed model. Bond breaking and making mechanisms of self-driven particles illustrating the unidirectional movement of protein motors are investigated by means of performing cluster mean-field analyses. Dynamics in the proposed system dominated by the competition between the attraction effect and the repulsion one are found to depend on the specific value of the interaction energy of these active particles. The research work will be helpful for understanding non-equilibrium statistical behaviors of interacting particle systems.

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